Cpu fan rpm

#1 Hi!I recently bought a 20" early 2008 iMac (2.66 C2D, 4GB RAM) for a mere 200 bucks because it had weird fan control issues. Loaded Lion onto it and the iStat widget, which reports this: As you can see, the CPU fan has gone ape feces/excrement/poo at 3900 RPM, all the while the HDD fan is spinning at 1200 RPM. And the HDD is at 40 degrees Celsius while the CPU is at 28. Not very logical!So what I'm contemplating is if it's worth it to try a fan control program and try to limit the fan manually - though I've read that this can seriously mess up the SMC. I'm not super capable of handling Terminal and such and it makes me think that this is not the greatest of ideas.Any thoughts/recommendations? I will try to do a hardware test and update this post later with the results.UPDATE: I found a solution on some forums. Unfortunately, I'll have to manage the fans semi-manually from now on.1. Download smcFanControl and install.2. Download View attachment Fan control.zip - a folder of Automator apps with workflows that tells the smcFanControl driver through Terminal to set a new max fan speed. Included is 1200, 1500, 2500 and the default 3900 RPM. Just click one when the fans are unbearable, and use smcFanControl in your menu bar to report your CPU temp, so you can run the Automator apps accordingly.(Need another speed? Take your desired RPM times 4 and feed it into here: then run Automator and make a workflow app paste in this via Utilities > Run shell script. Delete the "cat". Save as a new Automator workflow with the name of the RPM limit.) Last edited: Jun 2, 2012 #3 Last edited: Sep 20, 2021 #5 Last edited: Sep 20, 2021 #7 Last edited: Sep 20, 2021

The GTX leaves its fan at low speed, where the AMD runs maxed out until the system boots. The result is that the GTX drives the PCI fan to crazy high speed some time after boot things cool down and the PCI fan gets to the number cited (1400 RPM). Does this sound normal for the GTX? Hi,This is not normal your PCI fan speed should be 800 rpm. Luckily there is a solution to this and that is to stress your card/cpu so that the PCI fan goes above 2000rpm after which it goes back to its normal behaviour and will remain to do so until you turn off your computer. Even a reboot will not result in the high PCI fan speed (notice also the CPU fan shows a similar behaviour but is less noticeable compared to the PCI fan).Michiel. #45 Can someone look at what their PCI fan speed idles at with the GTX680 in place?With the legacy AMD card the fan idles at 800 RPM (e.g. quiet), where with the GTX in place idle speed in my case is around 1400 RPM (e.g. annoying growl). But that said the card I purchased was an open box return and there was a splash of heat sink compound at the edge connection. Thus I'm wondering if someone was playing with an after market cooler and didn't get the card back to factory configuration...Also I tried playing around with the GTX's default fan speed. Didn't help. Also with clock

You are using an out of date browser. It may not display this or other websites correctly.You should upgrade or use an alternative browser. #1 Motherboard - Sabertooth 990FX R 2.0CPU cooler - NZXT HavikI have recently been trying to overclock my CPU, I can't do this because my CPU fan speed won't change and runs at around the 1700RPM mark without change.Ok so I will get straight down to it with what I know so far. My fan has a 3 pin plug so Applications cant control the fan speed but the BIOS apparently can, I understand that part.I have 3 options in my BIOS for fan speed control, I have to set the 'Cool and Quiet' option on first though. Disabled by CPU, Enabled always, Disabled always. I have set it to Enabled always.I have the options to control my fans (CPU and chassis fans) Disabled, Silent, Standard, Turbo and Manual. I have tried all these options (even disabled and setting to manual so my fan runs at 100% when at 20C) but my fan is still stuck on 1700 RPM.I have also flashed my BIOS Rom to the latest which has made no difference. Any idea on how to solve this so that I can get my fan to change speed? bgunner Jan 13, 2016 You did say that you tried the fans in a different header? Like a chassis header and it would control then correct? If not try this and see if the RPM changes to be sure the tachometer in the fan is working properly. If the RPM numbers do not change physically look at the fan blades and listen for a reduced sound and speed. It is possible the the tach is bad in the fans. Before Asus would warranty the board they will want you to hook a 4 pin fan to the CPU header. If you have one you may want to try this on your own to be sure what the issue is. I would not trust a CPU_fan header that was not acting proper for any fan for the CPU. It is also possible to replace your fans on the cooler so this is an option also if the tach is dead in... Feb 13, 2009 5,153 27 32,540 #2 That board can control those type fans through Thermal Radar. In bios be sure to set Cool and Quiet to always on. Be sure that the CPU fans are connected to the CPU fan header and CPU_OPT if you have 2. IF you are using the stock NZXT fans the max speed is 1500 rpm +/- 10% so your fans are running at full blast. Use thermal radar (supplied

All the major hardware components of a PC, majorly CPU & GPU, generate an immense amount of heat during their working, especially when heavy resource-consuming applications are running. Heat is the main culprit behind permanent hardware damage due to over-heating, as dust just works as a catalyst for it. Primarily, an effective cooling system is required to handle the heating issues. To solve this issue, CPU fans are introduced, which cools down the heating effectively & efficiently. Today, a large variety of fans are available in the market, from small capacity to high capacity. And the PC fan speed is controllable by using various applications. So, keep reading this article to know how to perform fan control Windows 10 in detail.A CPU fan is a crucial part of the computer hardware found in the motherboard, which can be a life-saver. Its most heroic function is to continuously cool down the hot CPU and prevent it from permanent damage due to burning out. It’s the CPU fan that saves the CPU and other nearby components from damage due to overheating and keeps the PC running.It not only provides cooling but also prevents dust from accumulating in the CPU.The power of CPU fans is measured in RPM, which decides the PC fan speed.It can be detached from the CPU and then attached back to the motherboard after cleaning.Higher the RPM higher the power of cooling. Also, gamers, graphic designers, animators, and VFX designers need the highest capacity and high-power fans to cool down their scorching CPU.Fans are connected to the motherboard by:3-pin DC connector: Speed can be altered by limiting the voltage.4-pin PWM (Pulse Width Modulation) connector: Speed can be controlled using software easily.We are here with the guide on how to control fan speed in Windows 10 and how to change CPU fan speed without BIOS. Follow these methods to control pc fan speed:Method 1: Change Fan Speed Through Power OptionsIt is the only method in Windows 10 to optimize the fan speed. Follow these steps to perform the same.1. Press Windows + X keys to open the Quick Link menu

Another motherboard ordered and fitted in, the CPU bracket also has to be taken off as the NZXT needed a custom one to be fitted... I might not even bother. Feb 13, 2009 5,153 27 32,540 #8 You did say that you tried the fans in a different header? Like a chassis header and it would control then correct? If not try this and see if the RPM changes to be sure the tachometer in the fan is working properly. If the RPM numbers do not change physically look at the fan blades and listen for a reduced sound and speed. It is possible the the tach is bad in the fans. Before Asus would warranty the board they will want you to hook a 4 pin fan to the CPU header. If you have one you may want to try this on your own to be sure what the issue is. I would not trust a CPU_fan header that was not acting proper for any fan for the CPU. It is also possible to replace your fans on the cooler so this is an option also if the tach is dead in one of the fans. Advertising Cookies Policies Privacy Term & Conditions Topics