As you can see in the clip above, temperatures are fine <70ºC. My CPU temps are around 33, GPU 38 and the pump is around 34. "Alienware Gaming PC Desktop Aurora R7 - 8th Gen Intel Core i7-8700, 16GB DDR4 Memory, 2TB Hard Drive + 32GB Intel Optane, NVIDIA GeForce GTX 1080 8GB GDDR5X, Windows 10 64 bit". I have a custom fan curve so the CPU is sitting quite cool all the time (I prefer to have it louder, cooler and without the ramping up and down). The machine never has never shut off like I would expect from overheating, and runs normal within Windows, just with the fan revving up and down all the time. Fans are up and down for no reason, from 600rpm to 2000rpm. Hi: My ASUS laptop fan has gone crazy lately. I have the fans plugged into the splitter that plugs into the CPU_fan on the motherboard just like Corsair directs you to do. This is an issue i am having for about a week now. However, the stock CPU cooler was still way too loud and ended up upgrading to a Deepcool Gammaxx GT v2 which completely eliminated the noise and have dramatically My custom loop can be set to coolant temp or CPU temp or even case temp if I want. I have a H115i Platinum though so my fans ramp up and down slowly and not instantly. spin up the fan, cool down They also have a dull ramping up/down sound I've found on every single fan. 3 xNoctua NF-F12 PWM Cooling Fan. My fans are rated from 400-2400RPM so would i be correct in assuming this is the correct way to set them or have i done it in the wrong order: When fan is ramping up again, open your computer case and most likely you will instantly notice which fan it is. I have the CPU pump set to ramp from 50% to 100% at 55C based on a water temp sensor. You will need to name your fans to be able to identify them later. This will help you to identify them when renaming. I have an AMD FX-8320 with a gigabyte GA970A-DS3P mobo. I added 3x ML fan and put them on their own led hub and rgb works great. I've had CPU fans go noisy and the answer was to renew the fan with a better (quieter) one. Fans play an important role in keeping our systems cool and running at their best. A complete restart doesn't help. I wouldn't mind the fans ramping up when I'm rendering something, but the constant spikes bother me a lot. ITs super annoying, I dont need my fans spinning up and back down just because my cpu spiked for a milisecond. The problem is as described, whenever i start up my computer my fan starts to spin up at 100% rpm and goes on for some time, it usually ends after a few minutes and goes to normal, but i'm afraid it might affect the overall life expectancy of my gpu. I like the max and min processor states to be at 100% so the full power is available, I think balanced might be 99% (can't remember off hand right now). 16 Individually addressable RGB LEDs light up Best way to sort out the fan ramping up and down situation is to set a manual fan curve for the CPU and case fans and for me it pretty much solve most of the noise issue I had. There is I'm using Gigabyte's app center to control the speeds. The fans keep ramping up and back down every few seconds. Before uninstalling, make sure to back up any profiles you want to keep. so I'm assuming you use the corsair link? The computer seems to ramp up its fan when it is sitting at idle when I am just browsing the internet or opening an application the R7 get's unusually loud. Just like in the previous CORSAIR LINK software, you can control the speed of your fans and CORSAIR AIO water pump using CORSAIR iCUE. Even creating custom curves, it'll happen more often than I'd like. Machine is about 6 months old and runs fine otherwise. Cooling: 9: Feb 6, 2021: B: Question Case Fans not ramping up with temp rise: Cooling: 3: Jan 21, 2021: N [SOLVED] Back chassis fan ramps up when tabbing OUT of a game. Same for me, fans running out of control no matter where I have them set in icue. “Zero RPM” mode is new to the CPU AIO Cooler market which allows Fans play an important role in keeping our systems cool and running at their best. Hello guys I have a problem with my Gigabyte RTX 3070 Vision OC which is fans keep pulsing/ramping up and down Heres my setup: - AMD Ryzen 9 3900X 3,8GHz Socket AM4 Box - Hyper 212 LED Turbo White Edition - Asus TUF X470-Plus Gaming - Gigabyte GeForce RTX 3070 Vision OC 2xHDMI 2xDP 8 GB - Cooler Same for me, fans running out of control no matter where I have them set in icue. I have an Aorus Xtreme 2080 Ti and the fans ramp up and down between 1000RPM to over 4200RPM, and there doesn't seem to be any rhyme or reason for it. Cooling: 2: Dec 22, 2020: Question Fans still ramping up and down: Cooling: 0: Sep 27, 2020 GPU is a ASUX 780 ti DC2 OC, factory-clocked at about +80. I have my CPU set to 3. However, even in a defective cooler, the coolant temp would go up, but not come down and this the fans would only cycle up and stay up. 1 x Corsair HX1200 (1200W) - PSU to support 24 HDD + several SSD and PCI cards. Fans are controlled by iCUE and a Corsair Commander. This is even with setting the fan type to 4-pin specifically (since they are 4-pin) and taking off auto. Basically if the case heats up then the fans exhaust more, they remain flat until a certain 20 de jun. ALL of my fans would then ramp up to 30 de jan. Remember to keep an eye on the GPU and CPU temperatures in particular. 4 x Kingston Value RAM (32GB, DDR4-2400, ECC RDIMM 288) 2 xNoctua NF-A8 PWM Premium 80mm PC Computer Case Fan. Fan speed keeps cycling up and then down I have a Dell Studio XPS 8100, running Windows 7 Professional, which has been great for the past 2 or 3 years, A couple of weeks ago I powered the machine down and it said it needed to install 19 Windows 7 updates. any help is helpful. So to lessen that issue you need to set a flatter fan curve, find a percentage that keeps it cool enough for you and set that flat until something like 65C in your case. unless the cooler the fans are on is too close to it's cooling limits, aka not up to the task. It runs wide open for a half a minute or more then shuts down to an idle, then goes up full blast again after a half a minute or so. Then you will soon find which fan is loudest. I have around 7 pcs with this problem. The ramping was always caused by a very high CPU package temp increase (36 idle but going up to 75). Turned on the psu outside the case with a clip and it goes full power too. Set them so they don't ramp up to 2500RPM. Your CPU fan will likely have an option for a target temperature, in degrees Celsius, and a minimum speed, either in percentage or RPM. For example, some PSUs may up their fan speed form 20% to 50% when their output load goes above 60%. It never ramps up or down, it's either idling or wide open. GPU is a ASUX 780 ti DC2 OC, factory-clocked at about +80. Most recently before I last gave up on it I checked the bios and the temps there on one of the cores was bouncing all over the place. My MSI 2080 Ti is the same where the fans will pulse if I sent the fan speeds below 30% the slowest fan speeds I found that won't show that behavior is 32% which comes to around CORSAIR iCUE H150i RGB PRO XT, 360mm Radiator, Triple 120mm PWM Fans, Advanced RGB Lighting and Fan Control with Software, Liquid CPU Cooler. One thing we especially like is the slow fan ramping (both up and down), as quick changes in fan speed are more irritating than gradual ones, and Corsair wisely ensures the fan RPMs rise and fall Hello, I have a 2080ti FE that recently started having fan issues. Go to the Fans tab to rename. The GPU ( Palit GameRock RTX2080) fans spins up, then down, then up, down and so on. The fans will turn off when game starts and randomly rev up and down but mostly staying in idle while game runs. In all actuality, I should just set the pump to 100% all the time. I have had the GPU since October last year Nvidia GTX 980ti fan changes speed constantly. You may want to experiment with different percentages as our case/CPU fans will likely have different sound profiles, but I hope you get the idea. Additional CPU cooler fans and case fans will ramp u and down with CPU fan. Hello, I have a 2080ti FE that recently started having fan issues. 1 Gen1) 10Gb/s - USB 3. Mar 27, 2018 · The há 2 dias They adjust manually in the bios fine, they will ramp up/down when I If you have a corsair CPU fan installed in your How to Control CPU How to disable Q Fan control for the corsair h100i V2, this is needed to allow the pump to run at full speed and to cool down the system Frete grátis no dia ✓ Compre Cooler Corsair 2. I use icue and no matter the fan profile I select. When fan is ramping up again, open your computer case and most likely you will instantly notice which fan it is. Cooling: 9: Feb 6, 2021: B: Question Case Fans not ramping up with temp rise: Cooling: 3: Jan 21, 2021: N [SOLVED] Back chassis fan ramps up when tabbing OUT of a Posted by Pimmekuhh: “gpu fans keep ramping up and down (GTX 780 poseidon))” Hi Chris, granted I take that into account. Q-fan step up time. The temps are all fine also. Case fans connected to a corsair commander pro. ” The hotter your CPU gets, the faster your fan will spin. Setup fan speed curve with motherboard bios or software. GPU: GTX 1070 Ti MSI. For the fan speed ramping up and down, that is normal for a 3000 series as they do not sit at a set clock speed and ramp up and down waiting to be used. In GPU-Z, the Fan Speed (RPM) reading goes from 0 to 3000 RPM every 10 seconds even when the Fan Speed (%) is constant at 22%. Maybe for chassis fans this makes more sense, although the CPU still provides a more immediate indicator of system load. from ASUS) have an "energy saving" piece of software (ASUS calls it "EPU-6 Engine") to go with it which monitors temperatures, voltages, fan speeds, etc. Ive tried to fix this for a while by my self but i havent found much out on why its doing it, ive looked at HWinfo when they rise up and cant see what one is doing it, ive set custom fan curves in the BIOS, tried my hardest to make sure they were not aggressive. 2 Gen 1 (USB 3. We can spend hours searching 1) Make sure it is really the case fans. Control and Customise Fan and Pump Speeds. I use pavilion 15 gaming series. 2) Get the biggest heatsink you can fit in your case for the CPU. Is there any way I can solve this problem? I found a thread to control fan speeds through IPMI but that only works on the X11 range of motherboards. What could be the problem? 60 amp breaker on carrier air handler tripped, reset and turn back on. Irritating. However, it does not - it happily sits at ~70% fan speed in those situations. I would suggest if you have any OC on the system to revert it on stock just to see if this goes away. de 2021 Solved: I use pavilion 15 gaming series. 0, 3. g. The recommendation from geo3 is right at least in my experience. Basically, this allows you to say “Keep my fan at X speed until the CPU reaches Y degrees—then intelligently ramp up the fan to cool it down. de 2019 My fans are ramping up if I pass the temperature threshold, ITs super annoying, I dont need my fans spinning up and back down just The strange thing is that this ramp up problem only started occurring when I switched out the stock fans on my old Corsair h80 for 2 Noctua Whenever I do *anything* on the computer, the fans ramp up to full speed They will stop for a moment if I stop doing anything, but if I do so much as 29 de jun. It's extremely irritating. The temperature remains stable. Furmark runs stable, funnily enough, even at factory clocks. My fans are ramping up if I pass the temperature threshold, which happens basically anytime I open Chrome etc. de 2020 In the new A500 CPU cooler, two 2400rpm fans can move up and down on Corsair is still eking out ways to keep the category interesting 20 de jul. The case fan too. Corsair 750w PSU 500GB SSD 1TB HDD My CPU cooler is connected to the 4 pin CPU_FAN header, my chassis fans are connected to the CHA_FAN headers For some reason my CPU fan is running rather eratically. I noticed that the Asus software picks up the fan at around 2200rpm and is always sat at this speed, so it seems it is picking up the pump and not the fans and I am struggling to get this working. Three 120mm CORSAIR ML Series magnetic levitation PWM fans deliver improved airflow for extreme CPU cooling performance. Worse still, some use fixed-load stepping, rather than a continuously-variable curve. de 2021 Corsair iCUE H150i ELITE CAPELLIX Liquid CPU Cooler 3 RGB Fans Controls Keep your system cool with powerful fan speeds up to 1,250 RPM, I should also note that the Corsair 600T has a fan-controller, fan curves, but also control the spin-up/spin-down rate as well. 22. I had the pump set to silent mode and the revving kept happening so I created a custom fan curve where the fans stay at 25% until 38 degrees and My chassis fans keep ramping (Corsair ML140 140mm) up and down anytime there is a slight spike in CPU usage. Ships from United States. eg, when a game is loading in a new area, for example, it revs for a few seconds, then after the load, it goes down again - repeat. de 2018 What can you do with CORSAIR iCUE software suite? CPU AIO Cooler market which allows the fans attached to the radiator to stop spinning . opening chrome will result in an instant boost So the fans keep ramping up and down all the time, even when I'm drawing squares on the desktop's wallpaper with the selection tool, or opening folders on windows explorer, not to mention heavy CPU usage tasks. No BSOD minidump written, complete conkout. First of all, i configured fan ramp up time to be 0. As a result the computer got hot quick with CPU hitting mid 80s in 10 mins playing Haven't tested games yet, will do in the next few days, and keep you informed. 44: “2080 Ti fan ramping up during games” It turns out my gpu was getting hot with the heat wave going on. 2 Gen 2 (USB 3. The only time I suggest to use ramp up/down is when using the CPU to control the temperature for your case fans because CPU temps can ramp up and down very fast due to load changes, so if you give it say 12 seconds [which I believe is the lowest setting] ramp up/down, then you will get a soother fan speed change and noise profile because you Re: Fans ramping up to full speed and then back down to idle? 2019/12/14 10:41:04 If that were the case (assembly problem), then the card* would fare even worse under sustained 100% load. (Other of the same type don't do this) Also when I use another psu in that case the case fan runs normal. I've got a HP DL360 Gen8 that the fans just randomly spin up to max - the temperature in the room is only 21 degrees and I've had HP out to check the hardware and they say there's no fault. Keep it maybe 1~2 days stock. From 250F to negative readings. One thing we especially like is the slow fan ramping (both up and down), as quick changes in fan speed are more irritating than gradual ones, and Corsair wisely ensures the fan RPMs rise and fall Every few seconds the fan will start to spin up, hit around 3%, then spin down again. With ryzen 5 3550h And GPU nvidia GTX 1050 3gb My cpu fan speeds up and slows down for unnecessary Corsair H115i RGB Pro XT liquid cooler review Introduction With these settings the fans do not ramp up and down and are essentially inaudible (quieter Gave it 4 stars because the corsair default profiles ramp the fans up and down way too much. Hello, Recently my Gigabyte Aorus RTX 2080 Ti Xtreme 11G graphics card has been experiencing an issue where the fans will ramp (while gaming) up to 4000+ RPM as the GPU temperature reaches 85c degrees and then as the GPU drops to 84c degrees, the fans instantly drop to ~2000 RPM. 22 de dez. Page 1 of 2 - Monitor loses signal, fans speed up while gaming - posted in Windows Crashes and Blue Screen of Death (BSOD) Help and Support: Yesterday I bought The Forest and I tried to play it Also have a 100%, 50% and 0% setting to evaluate different speeds and noise levels as I need. Actually I would have got the Scythe GT's but for the fact you can only get them in 3pin fan. de 2018 First specs of my system: Motherboard: Supermicro X9SCM-F Chassis: Fractal Design Node 804 CPU: Intel Xeon E3-1260L CPU cooler: Noctua Jul 28, 2016 · Open Corsair Link, and set custom fan curves for the fans attached to the H100i. For more information check If your Corsair Utility Engine (iCUE) runs into performance or behavior issues due to corrupted local files, you can perform a clean reinstallation of iCUE to try and resolve the problem. I should also note that the Corsair 600T has a fan-controller, and interestingly enough, whenever I turn up the speed on the CASE fans, my CPU fan also speeds up. ALL of my fans would then ramp up to maximum, irrespective of custom profiles, or the fact that 3 of the 4 custom profiles were not even linked to the CPU package but the GPU VRM (which did not increase in temp). We can spend hours searching Fans play an important role in keeping our systems cool and running at their best. The Asetek is set to 100 percent all the time. Any solutions to stop this? Your CPU fan will likely have an option for a target temperature, in degrees Celsius, and a minimum speed, either in percentage or RPM. The problem follows the psu. - It happens only when the driver is initialized. 700 Rpm parcelado sem juros! Saiba mais sobre nossas incríveis ofertas e promoções em milhões de produtos. If not, will not harm to slow down them one by one with finger (but do not put finger in fan blades - only in center). They also have a dull ramping up/down sound I've found on every single fan. This is an almost endless loop. Just came across this thread after noticing my new ML120 PRO fans from corsair kept ramping up and down every few seconds when connected to my motherboard and it was extremely loud. 25 de out. Posted by re. The only way I have found to get them to stop ramping however they see fit was to go into setting in icue and manually set each fan as a 3 pin. At normal workload there is no reason with proper adjustments for an automatic control to cause fans to "Whizz" up and down . I have it set to flat until the CPU hits 65C then it ramps up some to keep the coolant temp down. Can't hear it over the fans. Also my fans and pump don't ramp up when temps go up, it stays the same speed no matter what. Different sizes and fin designs have a big impact on fan efficiency and performance. Posted by Pimmekuhh: “gpu fans keep ramping up and down (GTX 780 poseidon))” It was extremely annoying when the fans would just ramp up on their own for no reason, for about 1-3 seconds, then slow down. , and can adjust the voltages sent to all the fans so that they spin up or down variably depending on "need". I dont have similar system but from my experience OC can do such a thing. 6s step up and 12s step down, case fans at 0s step up and 25s step down, but my CPU fans still ramp up and down instantly eg. Cooling fans do usually speed up and slow down on High end comps. . In stock. This means, when you open the case, they will be running at a slower speed because it is cooler. CHA_FAN3 (2 fans on rear of Krakens rad) These ramp up and down when I play with the fan curves as expected, they are set to the 'Turbo' Profile) H_AMP (2 top exhaust fans on top of case) These ramp up and down when I play with the fan curves as expected, they are set to the 'Turbo' Profile) As foon as the pc starts up the fans start going full power and never stop. The only way I was able to monitor was by making my own RPM jumper wires over to my fan controller from the pump and the two fans. I've had the card for about a year with no problems. We can spend hours searching Only if I open HWmonitor with iCUE and HWiNFO together, then the AIO goes crazy. My fan profile at the moment - case fans (including the CPU fan) running at a flat 60% or so until 60C, then will ramp up to 75% nearer to 70-80C. The GPU has a fan stop feature where the fan stops spinning when the temperature is under 55c, but this seems to get polled very often and what's happening is idle temps sit around 53-56c, so fans spin up for a second, temps drop and fans spin down. Many motherboards (e. Rinse, repeat. my idle temps are at around 32 degrees then when i get to 40 orso the fans ramp up like it is taking off. The one thing you have to keep in mind is the steeper the slope of the fan curve between points, the louder the fans may appear as they suddenly have to ramp up in RPM pretty quickly. As you can see in the image attached the fans keep ramping up and down each 30 seconds or so (even when idle) and the noise it makes when it ramps up is soooo annoying (it's so rough, I think if they managed to make the ramp up smoother it wouldn't be as annoying) Question One or more of my fans keep ramping up and down and I don't know which ones ? Cooling: 57: Jun 7, 2021: K [SOLVED] One of my fans keep ramping up, dont know what one it is. I do have a fan controller but just want to use that for case fans. Yes, you are definitely OCD. They are working as intended ( Ramping up when playing games etc ) It's just the random jumps to max speed that are boggling me. GPU Fan spins at MAXIMUM when starting the computer. My fans are rated from 400-2400RPM so would i be correct in assuming this is the correct way to set them or have i done it in the wrong order: Airflow needed to keep things cool is directly related to amount of heat that needs to be removed. I can be playing a video game where my GPU temps are mostly constant, and the fans will still ramp up or down, or they'll stay at 100% which is extremely loud and annoying. The motherboard I chose is the ASUS ROG Strix-E Z370. In this case, if the PSU load is fluctuating between, say, 59% and 61%, the fan will keep revving up and down between 20% speed and 50% speed. I also have 2 140mm fans that do not spin as fast as the 120's. This is really really irritating, as I was going for a near silent build, and everything else is almost completely silent, except for this constant ramp up and down of the fan. As such, the fans go into this endless cycle of up, down, up, down. So something like this might fix it too: 05Gb/s - USB 3. Unfortunately things haven't turned out well, the fans keep ramping up and down with 10-15 second intervals. If i lower GPU core clocks by that to 780ti stock it gets less crashy but by no means stable. It's very irritating. EDIT : The controller is plugged into CPU_FAN port on motherboard and all ramp up and down as intended by the speed ramp in the app if that helps. 1 Gen2) So the CPU fan will no longer adjust cooling as the CPU gets hotter. de 2017 The ramping was always caused by a very high CPU package temp increase (36 idle but going up to 75). 1s, but ramp down time 5 seconds, so it won't constantly go up and down (which is more annoying than staying a bit higher). Also have a 100%, 50% and 0% setting to evaluate different speeds and noise levels as I need. Mainly when I charge my laptop it starts to ramp up and down. Usually the fans ramp up and down a lot because the temperature is at a certain spot within the graph that has a drastic effect on the fan speed. Gigabyte has EasyTune 6 and Asus has SmartFan. Airflow needed to keep things cool is directly related to amount of heat that needs to be removed. PSU, HSF and Video Card fans may ramp up and down depending on the temperature. Can use a second PWM splitter on 3-way & 4-way PWM splitter. 2) If the coolant temp is jumping around like that, the unit is defective and that makes for a clear next step. With PWM curves, there is a lot of ramping up and down and many times, the fans are running at much higher RPM than the curve dictates they should. I even ordered another pack to see if maybe it was the first pack, but every fan has it. The fans were keeping it at 85c even though the monitoring didn't show any rise. 5 U1 installed on the server and even when it is just sat idle with no real load on the server. Sometimes adjusting the fan curve (temporarily) solves the problem, but it seems to always come back. The ramping up and down was actually pretty good, but I found the 1800-2600RPM noise levels were WAY too loud and would have liked to reduce the maximum. The majority of GPUs have a default fan profile that just keeps them off and instantly ramps up to 40-50% fan speeds at 60C to 65C and then to Max fan speeds at ~90C. There is Carrier fan speeds up and down. When the RPM reading is over 3000 RPM, the GPU fan becomes extremely loud. Just build a new machine, Corsair 500d rgb case that comes with a commander pro and 3x LL fans. SpeedFan does not always name all sensors accurately. It only happens in games and other 3D applications, and it gets loud at 3000 rpm. My other main criteria is that I want the fans automatically ramp up with high cpu usage (heat) and then go down when idle which is why I need 4pin PWM fans. My fans keep spinning up and down and up and down constantly. I also find fans ramping up and down is distracting, but a consistent noise less so. I've now had two maximus boards, an 8 ranger and X hero, and both have never followed my fan step up and step down bios settings. Disabling extreme quiet does seem to make it more predictable, but to be honest I never found a good explanation of what that setting is supported to do. The fans of my new but used GTX 980ti Poseidon (Asus) keep changing their speed from 100 rpm to 1500 rpm and above and down to 100 rpm again -> I think that can‘t be good for the fans, it‘s quiet annoying and the cooling is not that good, too. CORSAIR iCUE provides pre-set fan and pump profiles such as “Quiet”, “Extreme” and more. With ryzen 5 3550h And GPU nvidia GTX 1050 3gb My cpu fan speeds up and slows down for unnecessary reason . Second, I edited the fan curves so fan stays at "idle" RPM (25% in my case, depends on the fans used) up to 50 ºC so it only triggers fan spin-up above 50ºC (most of Just sitting here with a browser open the PC is nice and quiet, but every 5-30 seconds the fans ramp up for 1-5 seconds, loud, then quiet back down I'm not new to this but this is a weird problem, I have afterburner open and it shows the GPU fan at a steady 25%, so I think it's the Corsair H100i V2 cooler. I was reading that the ASUS Ai Suite doesn't play well with other programs that control fans, pumps, etc. I set my fan curve to custom based off CPU and I want my fans at 100% when the CPU hits 65C as well as my case exhaust fans. Or even better, you can also smooth it out. This process repeats over and over. i notice when i get online when gaming or downloading the corsair fans ramp up and down alot. On my old PC i just used the corsair link software and this was it, i set the fans to run at the preset speeds and they stayed there and i was happy corsair h100iv2 fans keep going up and down at idle!!! As the title says my fans keep going up and down while I have essentially no load. Crashes are a black screen and, sometimes, the GPU fan going up to 100%. I would probably keep all case fans to monitor sensors on the motherboard so they like the CPU fan don't ram up and down, which they would if you set them to monitor the CPU, set the CPU fan, (it looks like there is a button labelled "CPU" on the right hand sided under the case representation) set that to monitor the CPU and tune the fan curve iCUE features powerful fan and LED lighting capabilities, bringing an unprecedented degree of intelligent control to your system. Then spin up, then slow down. Set control to manual and turn down all of the fans except for one. Now every time the GPU temp hits 81-82 degrees the GPU fans spin up to 100% for a few seconds then back down to normal for a few seconds then back up. 7 de jan. I have had the GPU since October last year Question One of my fans keep ramping up, dont know what one it is. Every now and then, even when completely idle, the fan will rev up to full speed for literally 1 second and then slow down again. Fix that corsair. my rig is not overclocked either. My fan on my cooler master seidon 120v which is mounted at the rear of my case is constantly speeding up and slowing down when I'm browsing the web. made sure all the fans are plugged Fast fans cool the coolant that in turn cools the CPU. I set custom profiles to remedy the issue. If you can hear this and it is an annoying noise increase, I would venture to say the fan/s need to be replaced under warranty. The GPU fan spins up and down approximately every 10 seconds even when the video card is completely idle. Somewtime it speeds up like mad for no reason. 230 volts to blower and 25 volts to motor circuit board. Once the case is closed, they ramp up and get a lot louder. I've got HP custom image of ESXi 5. i am kind of new to the fan curve stuff. Yeah, most "fan curve" presets these days seem overly sensitive re: when they start ramping up the rpm's. You don't really notice it that much at full on SRB "we have liftoff" speed, but once you ramp them down it becomes a subtle, but always present, slight ramp up and down sound. I have my exhaust fans set to ramp depending on internal temp in my case. Even when I don't play games or any other heavy application. Having a gradual slope for fan curves is most ideal to keep excessive fan noise down. 2. I set minimum at 30% fan @ 30c and maximum at 100% @ 65c.