Overclocking Questions
Overclocking Questions
I recently enhanced my main computer and decided to attempt overclocking using my existing parts. The specifications of the hardware I’m working with are as follows:
Processor: AMD FX-6100
MoBo: Gigabyte GA-990FXA-UD3 (rev 3.0)
RAM: G.skill f3-10666cl9d-8gbrl (x2) & G.skill f3-12800cl9d-8gbrl (x2)
PSU: Thermaltake SMART 600W
GPU: Radeon 6850 (x2 crossfired)
I followed a guide to adjust my overclocking parameters via the BIOS on the boards:
https://forums.tweaktown.com/gigaby...ca...oming.html
Currently, my multiplier is set at 20 (4.0GHz). I have turned off core boost, disabled all unnecessary power settings, and the VCore remains at the default "auto" configuration. The system starts up normally and loads Windows without issues. The CPU temperatures are well within safe limits. I installed Prime95 version 95, but it keeps crashing whenever I attempt to run it. I’m unable to initiate any tests. Monitoring tools show the core voltage and multiplier changing unpredictably. When the multiplier is idle at 7, the CPU voltage drops to around 1V. However, when it increases to 20 under higher loads, the core voltage rises to about 1.3V. Anyone have insight into why Prime95 isn’t running smoothly? Is there a critical step I’m missing or something I overlooked?
Thank you for your time and assistance, but please refrain from discussing upgrades. I understand these components are outdated. I’m not aiming to upgrade; this is just a spare PC. I’m here to learn and would really value your guidance.
Which voltage should I use? Because the voltage changes with the multiplier, it keeps shifting during diagnostics. Should I stick to the highest setting that matches a multiplier of 20 as my starting point? Most manuals advise staying below 1.4 to avoid harming parts.
For your reference, here are the screenshots of my BIOs and the monitoring programs mentioned. As shown, the voltage changes from 0.972V (multiplier of 7) to 1.332V (multiplier of 20).
https://ibb.co/RCSJ3QB
sdr hosted at ImgBB
Image sdr hosted on ImgBB
ibb.co
https://ibb.co/sF75fSp
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Image dav hosted on ImgBB
ibb.co
https://ibb.co/sF5bRrw
The voltage reaches its peak at 1.464V during heavy CPU usage. Yet, Prime 95 continues to fail whenever I attempt a stress test. What could be the cause?
Your HT link speed is too high; aim for around 2.4Ghz. (Not sure where to adjust this in your BIOS) Also, set the NB speed to 2.4Ghz. You might try up to 1.5v on the CPU Vcore b1.4v is what I suggest. Your CPU Vcore is in offset mode, which explains the +.7 to -.7v range—meaning it's running above stock voltage. Look for a manual setting to adjust it. If not available, check your CPU’s stock voltage by disabling Vcore loadline calibration, setting Vcore to auto, and running a stress test at normal speed; this will reveal the correct voltage. Then apply the offset accordingly to reach 1.4v.
What cooling solution and case do you have?
Your BIOS is in UEFI mode, so it has limited options. Switching to Legacy mode should simplify access to the settings I mentioned.
View: https://www.youtube.com/watch?v=jJVsxlQYnmM