*Phenom II X4 9x5 OC Thread*

[wuttz]

Originally Posted by Slappa

Haha it says the same stuff in Chew*'s OC guide that I posted up on the front page awhile ago.

i've read chew's* work but somehow this information didn't register in my brain. now i re-read it(again) and see this:



i know about the 3-hour P95Blend but not the fft sizes which stress the nb/imc/ram. oh well, i really need an "overclocking for dummies" book. =P

[WaLshy11]

Originally Posted by Slappa

Thats a great OC. Nice chip you have there.

Just be sure to post back with the P95 SS....make sure it is run for at least 3 hours, then I'll add you if it stable.

Argh.. cant get stable in Prime95 on those clocks >.<
Pushing voltages up (NB +0.300 / CPU-NBv +0.450 / CPU +0.150) but temps were becoming too high (56c on CPU)
Think I will pull back a bit on the NB clock so I can try for my CPU @ 4GHz
Would have really liked CPU @ 4GHz and NB @ 2.75GHz, but doesnt look like it'll happen

Strange that LinX passed.. probably because it doesnt stress the NB as much as Prime95

Originally Posted by wuttz

this has been the most informative post i've seen in a while!
i assume these fft sizes stress the RAM as well as the NB?

thank you and +rep!

Thanks to Chew* for that info though
Also, pretty much whenever you stress the NB you will be stressing the RAM as well.


BTW Slappa, your temps on air at those clocks
Snow machine in basement methinks?

[anonymous.gamer]

Originally Posted by anonymous.gamer

and another question...

HT Link.. does a higher clock cause stability problems? if so, what should i do to try and make it stable? raise cpu-nb voltage, or sb/ht voltage?
if i have a lower ht link could i have a higher nb clock? also, which would net better performace.. a nb clock at 2.6 and ht link at 2.6, or a nb clock at 2.8 and a ht link at 2.4.
talking gaming/usage not sourly for pi runs

anyone

[TheCh3F]

Originally Posted by anonymous.gamer

anyone

HT link requires a little bit of HT/SB volts, not much though (1 bump). For gaming there is no real benefit (actually it hurts scores) to go beyond 2100MHz.

"HT/SB volts" is specifically referring to the MA790FXT-UD5P BIOS.

[skugpezz]

Originally Posted by TheCh3F

HT link requires a little bit of HT/SB volts, not much though (1 bump). For gaming there is no real benefit (actually it hurts scores) to go beyond 2100MHz.

what? adding voltage to south bridge getsa stable ht link overclock?

[TheCh3F]

Originally Posted by skugpezz

what? adding voltage to south bridge getsa stable ht link overclock?

On the MA790FXT-UD5P the SB and HT voltages are the same setting. Yeah it sucks. Chew* has asked for this to be changed I believe.

[skugpezz]

Originally Posted by TheCh3F

On the MA790FXT-UD5P the SB and HT voltages are the same setting. Yeah it sucks. Chew* has asked for this to be changed I believe.

this is great news... I didnt know that

[Slappa]

Originally Posted by WaLshy11

BTW Slappa, your temps on air at those clocks
Snow machine in basement methinks?

Nope, just a window open.

Originally Posted by skugpezz

this is great news... I didnt know that

Just don't run the SB/HT at 1.5Vcore, the SB will die

[skugpezz]

Originally Posted by Slappa

Nope, just a window open.



Just don't run the SB/HT at 1.5Vcore, the SB will die

ok thanks for the tip

[Asmola]

How can you get so low temps with 23-24ambient? My CPU idles 40c @ 3640MHz with 1.4125 vcore, unders tress it get's almost 60!!:O I have reinstalled my C12P couple times with no difference. I'm using Artic Silver 5. I think mobo causes it but not sure.. or perhaps it's my ambient temp which is 25c now!