AMD 965be C3 & M5A97 evo overclocking

[Alien]

Hey guys

So my cooler has arrived and its time to make this chip work as it should. Along the way i'd appreciate help and ideas since i'm not a pro at this, although i've done small oc's with the old stock cooler.

System specs are in sig

If you have any questions the feel free, if i cant answer then maybe someone else can.

I might at some stage link this to a build log

 

[Alien]

Current setting are:
multiplier: 19.5
CPU voltage: 1.4v
fsb: 200

Primed blend for a few hours but when i got home i discovered that it bsod at some stage.
done both small fft and blend for 40min stable

I have not upped the cpu-nb yet and i'm hoping that this will help stability from what i have read. Im also going to increase the nb frequency as this also apparantly increases stability and speed.
I have read mixed views on overclocking the HT

 

[Alien]

couldnt get a stable prime with a multiplier of 20.so i increased the fsb to 205 giving me ~4ghz

voltage is at 1.43v but ill probably drop that.
temps are max 48deg on cpu 52 deg on cores

core 3 stopped working after 20min of priming.the others went for almost an hour. will upping vcore help this?

 

[Alien]

gave up on rushing my way to 4GHz since i couldnt get it properly stable.

Over the next few days i will get 3.9 GHz my 24/7 oc so it is properly stable then oc my motherboard and hopefully i might get the extra 100 mhz after that.

It seems the problem may be due to the heat wall

 

[Oj0]

Na, not heat. 4 GHz on air takes a fairly special chip, I went through a few before finding one that could do more than 3.8 GHz completely stable, and then only at 1.55v. Upping the HT speed will increase the memory speed, upping the NB speed will stop the memory controller from bottlenecking high memory speeds. Neither will increase stability, you're either going to have to ramp up the voltage or settle for a lower speed.

 

[Alien]

Na, not heat. 4 GHz on air takes a fairly special chip, I went through a few before finding one that could do more than 3.8 GHz completely stable, and then only at 1.55v. Upping the HT speed will increase the memory speed, upping the NB speed will stop the memory controller from bottlenecking high memory speeds. Neither will increase stability, you're either going to have to ramp up the voltage or settle for a lower speed.

Thanks for the reply. maybe playing with LLC might help a bit

 

[Oj0]

That won't make a big enough difference unless you have a one in a million chip, your voltage is far too low.

 

[Alien]

That won't make a big enough difference unless you have a one in a million chip, your voltage is far too low.

you seem to know your stuff . I have heard of people getting 4GHz on 1.5v to 1.55v. Is the chip safe at these voltages since the amd site recommends a max of 1.4v

 

[Oj0]

Yes it is, I ran 1.55v at 100 % load 24/7. AMD chips aren't as sensitive to voltage as INTEL chips. If you want to play around with NB speed, keep the NB voltage below 1.35v for short runs or 1.3v 24/7.