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***official amd 83x0 overclocking thread***

No BSOD or reboots.

I had it set at 4GHz and the fps was dropping and on the fps graph it showed spikes on the CPU (yellow) line. I just noticed that every time asus ai suite showed the 50 degrees message, which i've upped to 60 now the fps would drop.

I set the fsb to 230 and the multi to 17.5 I think. The voltage settings don't match up to the guide. What do I set the cpu and NB voltage at, and where is the current capability? :S

Ah ok seen a vid and noted where these settings are now. Most people seem to ignore these and just oc with the multiplier instead? Do you have a different guide for the m5a97 evo r2.0?

Got a stable clock with a low temp ( I think)

vIfas1D.png
 
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It's the Asus m5A97 Evo r2.0 which was about £80 when I bought it.

It ran a lot better with the settings posted above. Going to try get more out of it now.
 
We have found that using a higher fsb gives slightly higher benchmarking results, along with a lower voltage requirement clock for clock, thats why we do it that way :) For 4Ghz you could probably leave voltage on auto and then reduce from there if you need to
 
Thanks guys. Temps seem ok at the moment and the 4ghz is stable. I'll try again soon but I'll set to default first so I can see what the NB voltage was default for the board. Is it important to keep the nb and cpu voltage similar?

Then I'll look at setting manual memory timings!
 
Dazzo said:
Thanks guys. Temps seem ok at the moment and the 4ghz is stable. I'll try again soon but I'll set to default first so I can see what the NB voltage was default for the board. Is it important to keep the nb and cpu voltage similar?

Then I'll look at setting manual memory timings!
Click to expand...

No, ideally the CPU-NB volts should be well below the CPU volts. Mine are currently at 1.175 which is slightly over stock to compensate for my memory overclock.

If you check my sig you'll get some idea of the settings I'm using on the same board. I've found 230 FSB is the sweet spot with DDR-1866 when aiming for 4.5GHz.
 
JonSmith said:
No, ideally the CPU-NB volts should be well below the CPU volts. Mine are currently at 1.175 which is slightly over stock to compensate for my memory overclock.

If you check my sig you'll get some idea of the settings I'm using on the same board. I've found 230 FSB is the sweet spot with DDR-1866 when aiming for 4.5GHz.
Click to expand...


Thanks Jon.

What sort of temps are you getting under load? Going to try it out now.
 
I'm using a deepcool lucifer which is pretty beefy so the CPU temps don't go over 50C.

However, the socket temps get quite high (around 67C in Realbench). I do have pretty poor ventilation as my case does not have fans on top and it's stuck in a corner.

I don't test it in Prime because I've not found any real application that will stress it anywhere near as much, and it gets far too hot (like 77C socket temp).

The VRMs are pretty beefy for what I consider a budget board, It didn't throttle until it hit 80C socket temp.

Basically if you have a better ventilated case (something with fans in the top) with air blowing over the socket it will reduce the socket temp significantly and make the clocking a bit easier.
 
Ah OK thanks. Just got to 4.4 stable with 61 being max cpu temp, where are you getting the socket temp reading from?

I've just adjusted my fan profiles to see if I can get it to go lower as the chasis fans were running at 900 rpm whilst the cpu fan was running 1500 rpm :( I don't mind the cpu fan hitting this as it's pretty quiet anyway!

Settled with below for now. I'm finding messing with the bus on this Mobo is causing stability problems and I found greater success with just using the multiplier to OC.

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The CPU temp is the socket temp. That's roughly inline with what I was getting so I'd try and push for 4.5, volts permitting.

EDIT: Also I'd suggest not using Speedfan and only using the ASUS AI Suite as I found it wouldn't let me control my fan speeds correctly, and would tend to randomly crash my PC.
 
Dazzo, using the bus method changes ram speeds too. Make sure that you set the ram speed close to the xmp setting as this can cause some of the instability.

I was having weird crashes and it turned out that it was because I was trying to run my 2133MHz at over 3000Mhz!
 
heres my fx8350 temps. its fully watercooled with the gpu 2 x 240mm rads, koolance cpu380-a block ddc pwm pump. corsair sp120 fans all round. this was after about 5m of overdrive stability test.

 
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