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Phenom II x4 955 -> Can't go stable past 3,7 GhZ, please help. :)

post #1 of 16
Thread Starter 
Hello guys, well i finally changed my old e2140 to something more modern.

So i got:

Phenom II x4 955 BE
Asrock GXH/USB3
4 GB Goodram DDR 1333 CL9
Tagan 600W

So i started with overclocking yesterday and no matter what i do - can't go stable past 3,7 GhZ. Tried with 3,8 GhZ even with 1,55 Vid i get BSOD after few minutes in Prime95.

Current settings:

18,5 x 200
Vid: 1,52
NB: 2800
NBVid: 1,28
Memory and PCIE in untangled mode
CPU Temp: 53 (after 3h Prime95)

Weird thing thou i can't seem to find FSB clock in Bios nor change it in AMD Overdrive (windows just stops responding when i hit apply, so im stuck with Multi only. Dunno why.

So any ideas how can i go stable past 3,7 GhZ? Or this is it for my CPU?
Edited by Immortalq - 4/13/11 at 8:03am
post #2 of 16
Are you using the stock heatsink? I wouldn't use that at all. It's horrible. Buy something aftermarket.

Also lower your VID before you blow a MOSFET. 1.55 is too high for that board.

Is the 955 a C2 or C3 revision, check CPU-Z for this.
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post #3 of 16
Thread Starter 
It's C3 rev and i'm using 1,52 Vid now not 1,55 and of course i don't use stock heatsink, i got Mugen which is enough for sure. So any advice?
post #4 of 16
Bus clock OC?
It's a generic RAM kit, probably responsible for holding you back
What exact motherboard do you have by the way?
post #5 of 16
Try dropping the NB to 2600Mhz;

(once stable try upping NB to 2800Mhz, you may need to increase CPU/NB voltage up to 1.3V)
post #6 of 16
Use the BIOS to overclock. AOD only goes so far, and I've had experiences with the BIOS producing a stabler OC.

Yours is a C3, so theoretically it should do 3.9-4.0GHz on 1.45-1.525V.
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post #7 of 16
Thread Starter 
Read the first post?

Memory is in unlinked mode, so why its holding me back? It's set to default 1333 MhZ CL9 in Bios.

Motherboard Asrock GHX/USB3 (880G). NB is already at 2800 (stable at 3,7 GhZ).
post #8 of 16
Oop, my bad. It should be under a tab called overclock mode - set it to manual and mess with the CPU frequency.

Note: I can't seem to find the bios for your specific board, so I'm judging by a different AMD board by ASrock.

If you still have trouble finding it, take a snapshot of your bios and I'm sure we would be able to find it for you.
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post #9 of 16
Increase the CPU-NB voltage for 2800mhz...try 1.3 or 1.4v and see if it gets stable...also keep the HT-Link speed to 2000mhz, anything above that adds to instability. Did you disable cool n quiet and C1E? you can try to disable these also.
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post #10 of 16
Thread Starter 
@Primus check attachment, there is literally nothing like Bus Speed variable in my Bios which is bizarre.

@AMD-Dude trying now with ht@2000 and cpu-nb@2600 (1,33 NBVid) and i can't find / its not there - CE1 in Bios so dunno if its disabled.

Also tried 3,8 GhZ (19x200) with Vid 1,55 (max safe), after 16 minutes of Prime95, BSOD.

Edited by Immortalq - 4/13/11 at 10:36am
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