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AMD FX Overclocking

AMDMatt said:
Interesting, how much extra performance? I've not explored this option yet, but now you've got me interested.

What other voltages do you need to alter if you go this route? For now all I've touched is Core voltage, Dram voltage and LLC High.
.
Click to expand...

Went up from 740 to over 800 cinebench score @ 4.8Ghz, so 5-10%. Dont need to alter any other voltages, though be careful with ram etc as it changes ram speed too.
 
Ahh yeah I forgot to mention as it goes...

Don't manually set the voltage and timing on your ram. If Asus have released a newer bios then you could be fine but I and several other members here found that manually setting the ram up caused massive stability issues on this board (and the Saber and 990FX) so it was obviously a fault at Asus' end.
 
AMDMatt said:
The newer chips are definitely higher binned for sure. :cool:

I reckon i can beat your 5.1Ghz with my FX8370E. :D

Very impressive. I used the core ratio multiplyer to get mine.
Click to expand...

All the fx silicon have been refined since around 2013, It also took Amd 2 years to finally learn how to refine their p-states and operating voltages.
But yours does look a beaut, what are your package and cpu temps?

I achieved 4.8ghz game stable/ 5ghz benchable stable on (little beast) a 4+1 £38 MATX 78lmtusb3 no throttling.

voltage scaling looked like this for a 2013 Dec fx8320.
1.18v 4ghz
1.25v 4.2
1.35v 4.3
1.40v 4.5
1.45v 4.7
1.48v 4.8
1.52v 5.0


 
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Davedree said:
All the fx silicon have been refined since around 2013, It also took Amd 2 years to finally learn how to refine their p-states and operating voltages.
But yours does look a beaut, what are your package and cpu temps?

I achieved 4.8ghz game stable/ 5ghz benchable stable on (little beast) a 4+1 £38 MATX 78lmtusb3 no throttling.

voltage scaling looked like this for a 2013 Dec fx8320.
1.18 v 4ghz
1.25 v 4.2
1.35 v 4.3
1.40 v 4.5
1.45 v 4.7
1.48 v 4.8
1.52 v 5.0
Click to expand...

Check a few posts above for the temps Dave.

Now testing 5.2Ghz core ratio voltage at around 1.536v. Package temp is close to throttling so this will likely be the limit. Will try FSB next.
 
1.536v. Holy crap.

4.9ghz takes me around 1.45 IIRC. It may have even been as low as 1.42. I found that pushing up the voltage made the chip unstable. I can't post with any more than 1.49v.

Also, make sure you have the extra 4 pin the board has hooked up because it supplies voltage to the memory phases and keeps the memory more stable.

The CH is 8+2+2, so carries an extra two phases just for the ram.
 
Yep got all the power connectors plugged in. Stability has failed a few times, she needs more core voltage i think. 5.2Ghz might be a step too far.
 
Cool. You will eventually get to the point where more volts degrades the scores you achieve.

All I really wanted from my 8320 was to break 800 points in Cinebench but man, it fought me all the way. In the end I settled for 800 dead even before I ended up blowing something up :D

Have a read of this, Matt. It has all of the settings and FSB I used as pics.

http://forums.overclockers.co.uk/showthread.php?t=18557773

For 5ghz I use a 230mhz bus. These boards should easily do 240+, though. Maybe one day when my lady isn't looking I will give it another shove. Her rig is all AMD too. 8320 + 7990.
 
ALXAndy said:
Cool. You will eventually get to the point where more volts degrades the scores you achieve.

All I really wanted from my 8320 was to break 800 points in Cinebench but man, it fought me all the way. In the end I settled for 800 dead even before I ended up blowing something up :D

Have a read of this, Matt. It has all of the settings and FSB I used as pics.

http://forums.overclockers.co.uk/showthread.php?t=18557773

For 5ghz I use a 230mhz bus. These boards should easily do 240+, though. Maybe one day when my lady isn't looking I will give it another shove. Her rig is all AMD too. 8320 + 7990.
Click to expand...

Cheers, I'll take a look. Still learning the ropes with AMD Cpu overclocking, but I'm a fast learner!
 
I tell you what I have had more fun overclocking AMD than anything else. I used to have a P2 920 and I got that to 4ghz on a NHD-14.

I've had more fun with my 8320 than any other chip I've ever owned tbh. There's just so many little toys to play with :D
 
ALXAndy said:
I tell you what I have had more fun overclocking AMD than anything else. I used to have a P2 920 and I got that to 4ghz on a NHD-14.

I've had more fun with my 8320 than any other chip I've ever owned tbh. There's just so many little toys to play with :D
Click to expand...

Yeah I'm having a blast especially as this is relatively new to me. I never realised these things overclock so well.
 
That is impressive Matt, i need 1.42v for 4.5Ghz, 1.46v for 4.6ghz and 1.48v for 4.7Ghz, that's as high as i can go with my FX-8350.

Asus Sabertooth 990FX.
 
My old 8350 on an M5A99x motherboard 12/10/2013.
It also did 10 consecutive runs of IBT standard at 100+ Gflops using 16x 302Mhz.

803cb 5.04Ghz at 1.5V Windows 7 SP1



 
For god sake Matt don't mention the fun you are having with your biased red toys even though you bought them yourself AND from this retailer! :p

I have a sabertooth and an 8320, stability flakes around the 4.8 so I run it under this for 24/7 use. If you recall I had a dodgy PSU around the time of the 7990's so it may be pushed further just not had the time.
 
humbug said:
That is impressive Matt, i need 1.42v for 4.5Ghz, 1.46v for 4.6ghz and 1.48v for 4.7Ghz, that's as high as i can go with my FX-8350.

Asus Sabertooth 990FX.
Click to expand...

Thanks Bug.

nkata said:
My old 8350 on an M5A99x motherboard 12/10/2013.
It also did 10 consecutive runs of IBT standard at 100+ Gflops using 16x 302Mhz.

803cb 5.04Ghz at 1.5V Windows 7 SP1



Click to expand...

Nice. :)

Th0nt said:
For god sake Matt don't mention the fun you are having with your biased red toys even though you bought them yourself AND from this retailer! :p


I have a sabertooth and an 8320, stability flakes around the 4.8 so I run it under this for 24/7 use. If you recall I had a dodgy PSU around the time of the 7990's so it may be pushed further just not had the time.
Click to expand...

I know right, heaven forbid! :p
 
Davedree said:
All the fx silicon have been refined since around 2013, It also took Amd 2 years to finally learn how to refine their p-states and operating voltages.
But yours does look a beaut, what are your package and cpu temps?

I achieved 4.8ghz game stable/ 5ghz benchable stable on (little beast) a 4+1 £38 MATX 78lmtusb3 no throttling.

voltage scaling looked like this for a 2013 Dec fx8320.
1.18v 4ghz
1.25v 4.2
1.35v 4.3
1.40v 4.5
1.45v 4.7
1.48v 4.8
1.52v 5.0
Click to expand...

I see on the second pic, the mosfet heatsink is removed. Did you replace it or re-paste it?
 
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