Confusion about CPU overclocking voltage! Are you sure your CPU is functioning properly? Need some assistance!
Confusion about CPU overclocking voltage! Are you sure your CPU is functioning properly? Need some assistance!
Hi,
I'm trying to overclock my FX-8350 CPU to ATLEAST 4.5ghz. I tried originally at stock voltage and only got it to be stable at 4.1ghz. I increased the voltage from 1.2875 to 1.3 (.0125 incriment) and it still was not stable at 4.2ghz according to prime 95 test. I've been increasing multiplier and with each fail in prime 95 increasing the voltage by .0125. Now in my BIOS I'm on 4.4ghz and 1.375. Is this normal? I'm not much of an overclocker but I wanted to squeeze more performance out of my CPU. Also even though my voltage is set to 1.375, hardware monitor has a max voltage reading on CPU VCORE of 1.32 and CPU-Z is giving me the same reading for core voltage. My temps are only peaking at 46C. Am I doing everything right?
Before I forget here is the link to my setup -
http://au.pcpartpicker.com/list/4WxTHN
Also another thing, I was reading various over clocking tutorials about LLC and how I should set it to medium or high or whatever the tutorials said, but in my UEFI I only have enable or disable and the note says enable for AM3, disable for AM3+
Any help appreciated!
EDIT:
I'd like to further point out this:
https://postimg.org/image/x49qwk47b/
As you can see my voltages are reading a max of 1.26 volt after 5min of stress testing with prime 95. In my BIOS i have it set to 1.4125. Why is this number so different?
Thanks
The FX-8350 shows minimal extra power usage above stock frequency when using air cooling. Clock speeds up to 4.8GHz are possible with AIO water cooling. LLC (Load Line Calibration) plays a key role in Bios settings during overclocking of this chip. The exact percentage or rate varies depending on the overclock, but it should begin at "HIGH" and then move to "CPU Current Capability" at 120%. Unfortunately, I lack experience with your MB or its capabilities, though the principles remain consistent. There is a helpful YouTube video by Jayz Twocents that demonstrates his cooling configuration. Check it out: https://www.youtube.com/watch?v=MckeAmnDeTk. I’ll look for a suitable video for your specific chip and assist further if needed. There’s a method available to optimize performance.
MeanMachine41 :
The FX-8350 has very little overhead above stock frequency with Air Cooling.
Clock frequencies of up to 4.8GHz have been achieved using AIO Water Cooling.
LLC (Load Line Calibration) is an important aspect of Bios settings when OCing this chip.
The % or rate will depend on the OC however start on "HIGH" first and "CPU Current Capability" to 120%
Unfortunately, I have no experience with your MB nor its capability, however the principles are the same.
There is a very good Video on YouTube by Jayz Twocents however, look at his cooling setup.
Go Here:
https://www.youtube.com/watch?v=MckeAmnDeTk
I will see if I can find a decent Vid for your Specific MB.
Start with that first and if you encounter issues,then I can help with further Tweaking in Bios.
There is a method for OCing, to get the most from your chip.
Thanks for your help.
As I was saying above i don't have an option for Medium, high, ultra, low or anything like that, simply enable, disable and auto ( I left it on auto). Funny you should link that video because that was what I was following originally, but he seemed to get much higher clocks on lower voltage. I understand his cooling is better but that only effect temperatures, right, not how much voltage you need..? My CPU isn't getting hot or anything. I'm on 4.5 GHz at 1.4 voltage right now and it seems stable in prime 95.I'll wait to see if you can find any details on my motherboard!
Thanks a ton for your help
Wow, it seems there aren't any good video or OC guides tailored to your specific MB and CPU. No recommendations available at the moment. Perhaps another person could assist with this thread?
Interesting, I haven't found any solid video or OC guides tailored to your specific motherboard and CPU. None of them come highly recommended. Perhaps another person who reads this thread might be able to assist. It seems a bit unusual from what I observed—it's a fairly common motherboard, especially at the lower price range for the 990FX. I turned on LLC, but it didn't seem to have much impact. Any advice you could offer would be really appreciated. Thanks a lot.
I’d also like to know what my NB frequency and CPU NB Voltage should be. The NB Frequency is 2200MHz (11x multiplier) and the CPU NB Voltage is at 1.1625. Are these correct? Should I adjust them as well to improve stability?
When you begin your OC, avoid making random changes without understanding their effects. For now, stick with your CPU core ratio multiplier and keep CPU/NB settings at AUTO.
Increase the multiplier slightly above the stock frequency, for example to 4.2GHz, and raise the core voltage to 1.3V. After that, perform a stress test to verify stability and monitor temperatures using HWMonitor and AIDA64.
If you remain stable, try increasing the frequency to 4.4GHz and the core voltage to 1.32V, then repeat the stress test.
If at any point the OC fails, raise the voltage by one unit and retest. Keep repeating until you reach a point where success becomes impossible—this is known as the WALL.
Don’t attempt drastic changes all at once. There are several factors influencing how far you can push your system. The main challenge is heat; higher voltage generates more heat exponentially. Therefore, ensure proper cooling.
The effectiveness of your CPUs depends on their IMC, the compatibility of your DIMMs, and the BIOS settings.
MeanMachine41 :
TaintedGG :
I also want to know the recommended NB frequency and CPU NB Voltage. The NB Frequency is set at 2200MHz (11x multiplier) and the CPU NB Voltage is 1.1625. Are these values correct? Should I adjust them further to improve stability?
When you begin your OC process, avoid random adjustments without understanding their impact. For now, stick with your CPU core ratio multiplier and keep CPU/NB settings at AUTO.
Increase the multiplier slightly above the stock frequency—perhaps to 4.2GHz—and raise the core voltage to 1.3V. After that, perform a stress test to evaluate stability and temperature trends using HWMonitor and AIDA64.
If you remain stable, proceed to 4.4GHz with a core voltage of 1.32V and repeat the stress test. If the OC fails at any point, increment the voltage by one unit and retest. Continue this process until you reach a point where further changes no longer yield results—this is known as the WALL.
Be aware that heat is your main enemy; higher voltage generates more heat exponentially. Ensure proper cooling. Also consider CPU IMC strength, DIMM compatibility, and BIOS settings.
Thank you for your guidance. Over the past couple of hours, I’ve been following these steps, but my CPU seems to need more voltage than suggested (4400mhz @ 1.32V is closer to 4400mhz at 1.4V).
I wouldn't suggest exceeding 1.4V. Make sure LLC is enabled. What's occurring in those settings could be a failure or something else? Share the HWMonitor data from when the system was under stress. Are there any other concerns about your power supply?
MeanMachine41 :
I don't suggest exceeding 1.4V. Make sure LLC is enabled. What's occurring in the settings you mention could be a failure or something else?
Share the HWMonitor data from when your system was under stress test.
The only other possibility I have in mind is whether your power supply can handle it.
When I say fail, I mean one of the cores in prime 95 had an issue. I looked into it and based on the video you linked to Jayztwocents, I increased the voltage by .0125. I'm currently running a stable clock at 4.5ghz (my target) with 1.4375 volts, which seems acceptable compared to other results I've seen. I've been using this configuration for about half an hour now and haven't encountered any errors, so I'll stick with these settings.