1.54volts for 4.5ghz overclock on AMD FX-8350?????

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Excessive Nerve

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Hello everyone! I'm in need of help with overclocking my FX-8350. I'm an amature overclocker, but even I know that 1.54 volts for a small overclock (4ghz -> 4.5ghz) is quite a bit.

Right now I'm running my FX-8350 at 4.5Ghz stable at 1.54volts. I've ran a prime95 test for 5 hours, and the socket temperature went up to 66C, and the cpu it self didn't go above 45c. 4.5Ghz and 1.54 volts were the only overclock settings I could get to result in 0 errors from prime95.

Here are my system specs:
Specs:
CPU: AMD FX-8350
GPU: Sapphire Tri-X OC R9 290
Mobo: Asus M5A97 R2.0
Psu: Ultra X4 750watt Modular Powersuplly
Gaming HDD: Western Digital 2TB Black
RAM: 16gb Kingston 1600mhz Hyperx Blu (4x4gb)
Cooler: H100i

Video of my BIOS settings (I'll make a better quality video later):
https://www.youtube.com/watch?v=oJ-GCWaFNJo


Can you more experienced overclockers tell me why I need so much voltage for such a minor overclock? And is their any bios settings I can change to give me a higher clockspeed without raising voltage? I'd like to eventually get to 4.8-5ghz.

Thanks!
 
Solution
ish416
Bump the voltage up until it becomes stable. Watch your temps (75C) and generally for an FX chip, 1.5V is the highest you want to go for 24/7 use.

Mine has been at 5.2Ghz and 1.48V for over a year, no issues.

It could also be that motherboard holding you back. I've had a few M5A97 R2.0 and they are great for a lower end board. My Sabertooth 990FX can hit around 500 Mhz higher with lower voltages than any of my M5A97 or Gigabyte 970-UD3 could.
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ish416

ish416

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I watched your video.

Try dropping the CPU bus frequency as that is pushing your ram. Try setting it at 200 (default), then just start bumping up the CPU ratio at default voltages. Most 8350 can hit 4.4 Ghz without even touching the voltage. Once it becomes unstable, up the voltage again. Also, you can turn on CPU Line Load Calibration (LLC). LLC will try to keep a constant voltage. I think on the 970 it has like extreme, normal or maybe percentages, just try a higher setting.

Once you find a stable OC on just the CPU multiplier, then you can start upping the bus speeds.

You can also disable AMD Turbo Core.


I think I might have an M5A97 around, I can fire it up and see what else there is.

 
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ShadyHamster

ShadyHamster

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Jan 3, 2012
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I would start with just overclocking via multiplier, leaving fsb at default.
Disable turbo
Disable spread spectrum
Enable load line calibration
Disable all power saving features

You may have just got bad luck with the silicone lottery or you may need a better motherboard.
 
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Excessive Nerve

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Thanks for the suggestions. I'll give it a try and come back with the results!

Edit:

I changed the multiplyer to 4.4Ghz disabled turbo, disable spread spectrum, enabled LLC and set cpu voltage to auto and it seems I can get 4.4Ghz stable without touching voltage at all. I'm going to up the clock speed a tad as well as the voltage, and post my results. Thanks!
 
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I tried your sugeestions and my CPU is stable at 4.4Ghz without touching the voltage. Although if I try to push it any farther, my computer keeps freezing 1-15 minutes in a Prime95 test. I'm not sure what I can do to get to 4.8Ghz.

Edit after about an hour of use my computer froze up on me at 4.4Ghz. I have no idea what is wrong with my system....
 
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ish416

ish416

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Jul 5, 2012
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Bump the voltage up until it becomes stable. Watch your temps (75C) and generally for an FX chip, 1.5V is the highest you want to go for 24/7 use.

Mine has been at 5.2Ghz and 1.48V for over a year, no issues.

It could also be that motherboard holding you back. I've had a few M5A97 R2.0 and they are great for a lower end board. My Sabertooth 990FX can hit around 500 Mhz higher with lower voltages than any of my M5A97 or Gigabyte 970-UD3 could.
 
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