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Undervolting 8350FX without losing performance - Page 23

Poll Results: Have you ever tried to undervolt before?

 
  • 67% (74)
    yes
  • 25% (28)
    no
  • 6% (7)
    what?
109 Total Votes  
post #221 of 297
Quote:
Originally Posted by madmalkav View Post

Only problem is NB set to 1.25v by BIOS even if I set it lower.

That's odd, in the 970 you can lower it as you please... It must be a quirk of your model...
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FX-8320@4Ghz Gigabyte 970 UD3P Gainward GTX 750Ti Corsair XMS3 1600Mhz 16GB (4x4GB) 
Hard DriveHard DriveOptical DriveOptical Drive
Crucial MX100 250GB Western Digital Green 2TB LiteOn Blu-Ray Burner IHBS 112-2 LG BH16NS55 Blu-Ray Burner 
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post #222 of 297
Thread Starter 
Quote:
Originally Posted by Chackan View Post

Hi guys!

Just found this thread yesterday and maybe it just saved my life tongue.gif

So I have the following specs:

- AMD FX 8350
- CoolerMaster Hyper TX3
- Asrock 970 Pro R2.0
- Tower HALFMMAN Ares Black
- ATI Radeon R7 265
- Kingston 4GB DDRIII
- PSU Mars Gaming MP600
- HDD WD 1TB

I was getting the temperatures in the screenshot below with my FX 8350 when gaming:



Sometimes it would reach even higher values. The max I reached was around 68º/69º. The CPU started throttling at around 61º.

I started researching and found out that the AsRock 970 Pro R2.0 isn't very FX8350 friendly, even if the specifications say it is supported.

So I tried Undervolting and reduced the voltage to 1.225.

Been gaming and the max I've reached (till now) was a temperature of 52.5º, which is great.

Now I know that AMD has the Turbo Core tech, a subtle overclock to 4,2Ghz. The CPU is currently at the max of 3991MHz (roughly 4Ghz).

Is there anyway to allow the Turbo Core tech without raising the voltage? If not, I rather have the CPU in a stable and cool temperature than gain 200MHz.

depending on your particular cpu, you could get 4.2ghz stable as low as 1.25vcore... if you could then likely that board could handle it.. but most 8350's I know take at least 1.3v to get that stable.. either case, with that board I would go as low as I could on that voltage and stick to 4ghz...
post #223 of 297
Just getting around to optimizing my personal 8350, after switching it out with my sold Thuban several months ago. Utilized some settings mentioned in the thread, and am very impressed with the results. Chip is currently set to 210 FSB, 20.5 multiplier, but "only" managing a ~0.025 undervolt. As others have commented since PD's release, the 8350/8320 really comes alive after 4.5+ GHz; overall system speed is greatly increased, compute tasks are noticeably quicker, system as a whole just feels much, much more robust, and very pleasantly crisp. Can't remember another chip (well, except 486 lulz) that benefited from such a small bump in clockspeed.

Probably won't seek to clock higher, as the extra energy consumption wouldn't be worth it to me.
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post #224 of 297
Thread Starter 
Quote:
Originally Posted by btupsx View Post

Just getting around to optimizing my personal 8350, after switching it out with my sold Thuban several months ago. Utilized some settings mentioned in the thread, and am very impressed with the results. Chip is currently set to 210 FSB, 20.5 multiplier, but "only" managing a ~0.025 undervolt. As others have commented since PD's release, the 8350/8320 really comes alive after 4.5+ GHz; overall system speed is greatly increased, compute tasks are noticeably quicker, system as a whole just feels much, much more robust, and very pleasantly crisp. Can't remember another chip (well, except 486 lulz) that benefited from such a small bump in clockspeed.

Probably won't seek to clock higher, as the extra energy consumption wouldn't be worth it to me.
glad to hear it working out for you.. I've moved on to a 9590.... mostly due to improvements in the manufacturing process they require even less volts per clock today than ever in general... I can get 5ghz out of this chip for only a change in the LLC... no extra volts required lol... but for the record, 4.7ghz stock is great... can't tell much difference between it and 5ghz... like you said... 4-4.5 big improvement... 4.5 to 5 not as noticeable except in benches...
post #225 of 297
The 9590 is indeed a neat chip, even if it is only higher binned. Installed it for some client builds, and while I was impressed with the speed, it was expected from the clock rate. They also run quite hot, but again, also expected. 4-4.5 GHz is so pleasing because the difference is so unexpected, and undervolted, to boot!
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post #226 of 297
Anyone mind giving me a helping hand on this sorry a little new to this i have a fx8350 and asus-m5a99fx pro r2.0.
post #227 of 297
Quote:
Originally Posted by kaz050 View Post

Anyone mind giving me a helping hand on this sorry a little new to this i have a fx8350 and asus-m5a99fx pro r2.0.

I have the same setup as you. What aspect is giving you trouble?
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post #228 of 297
The cpu and nb voltage offset to .01 I think I have 2 of them and any other settings I need in windows and bios .
post #229 of 297
Ok, the only settings you need to worry about are in BIOS; ignore the software overclocking software in Windows. Minotaurtoo's OP explains what general settings work for higher end ASUS BIOS, which your board is equipped with.

If you've made any changes to your BIOS already, go back in and reset to optimal defaults. Once that's done.......

1. Click on the "Advanced" tab in the main BIOS screen.

2. Once there, click on the "AI Tweaker" tab .

3. In there, select the D.O.C.P. option in the "AI Overclock Tuner" section.

4. Now, scroll down the page to the D.I.G.I. Menu, and click into it.

5. Once in this sub-menu, set CPU LLC option to high, and CPU NB LLC option to high.

6. Then, back out of the sub-menu, into the main D.I.G.I Menu you were just in. Scroll down to the CPU and NB Voltage section, and select Offset Mode section.

7. In the Offset Mode section, select just the CPU Voltage option, and set this option to negative (-). Below this section should be the Offset Value section, which you can start out at 0.1, *if* you are keeping the clocks stock. If so, save these settings in BIOS and exit. System should be stable, but remember that every CPU and motherboard varies in abilities.

8. If undervolting and overclocking, you'll have to play around with the bus speed clock and/or CPU multiplier setting. You will also have to select a less extreme Offset Value, such as 0.03 or 0.025. For my rig, CPU is currently set to 210 FSB, 20.5 multiplier, but "only" managing a ~0.025 undervolt. YMMV.
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post #230 of 297
I think it keeps resetting I have cpu&nb to offset mode under that is offset mode sign to -
cpu offset voltage set back to auto even after I did .01
My bios is 2501
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