AMD® Phenom™ II Overclocking Thread

Adster3000 · 2 Apr 2011 at 21:54

MOOGLEYS said:
Cant hear the fan even under load with the stock fan, It hit 58.c as I was running prime and burn test together. With just prime it Just about gets to 52.C.. My case has quite good airflow with 3 120mm fans surrounding the cpu..

Snip

What case you using? I'd consider upgrading my Xigmatek Asgard to get the extra fans on top for a hopefully better OC.

MOOGLEYS · 2 Apr 2011 at 21:58

Adster3000 said:
What case you using? I'd consider upgrading my Xigmatek Asgard to get the extra fans on top for a hopefully better OC.

Coolermaster 430...

Adster3000 · 2 Apr 2011 at 22:03

MOOGLEYS said:
Coolermaster 430...

Would you recommend this case? Good and bad points?

I apologise for the off-topicness. I just don't think my case will be that good for cooling for when I get a 965 and OC it.

Cheers.

MOOGLEYS · 2 Apr 2011 at 22:08

Adster3000 said:
Would you recommend this case? Good and bad points?

I apologise for the off-topicness. I just don't think my case will be that good for cooling for when I get a 965 and OC it.

Cheers.

The case is a bargain it has exellent airflow and looks good with the all black interior. If you plan to run dual Gpu's things could get tight if you have lots of drives and long cards. Its let down by its poor cable managment. I managed to get a TX650 in and keep it tidy it just requires some creativity with the cable ties and a bit of patience.

eddyc · 4 Apr 2011 at 10:39

Leesolo said:
did you check what the message was on the BS ?? normally tells you what caused the crash ?? might be worth a googley

No didnt do that. Good idea. Thanks. Will do when I get home tonight.

I think I have it narrowed down to something to do with my cpu-nb clock. I kept the vcore and cpu multi the same but put the nb voltage and multi back to AUTO. That seems to solve the problem.

On the other hand if I put the vcore and cpu multi settings back to my known stable 3.8 GHz settings (200x19 @ 1.375) and keep the cpu-nb the same then that also seems to be stable.

I am guessing that the cpu-nb voltage needs another couple of notches. What do you guys have as your nb settings? I was using:

cpu multi - 20 (4.0 GHz)
cpu vcore - 1.45
nb multi - 13 (2600)
nb voltage - 1.25

I am thinking 1.25 is not enough perhaps. But that does not explain why it was stable for a week and then gave up. :confused:

John24 · 4 Apr 2011 at 12:30

1.25v does seem a smidge low, raise it a bit step by step and see if that helps.

My CPU-NB is at 3000 1.4v. Your safe up to 1.5v but shouldn't need anywhere near that.

MOOGLEYS · 4 Apr 2011 at 12:36

Does increasing the HT link speed do anything much. I just set mine at the default 2000 for my 4ghz clock ?

John24 · 4 Apr 2011 at 13:11

Not much no.

Most people will say keep it as close to 2000 (+/- 100Mhz) as you can to avoid it causing stability problems.

I've read a small increase can help a bit if your using either onboard graphics or multiple high end cards.

I'm using onboard graphics and 2200 gives me a slight performance increase when video encoding vs 2000, 2400 or 2600.

Doing some benches and stability tests at different levels to find out what works best for your usage is the only sure way i've found to find the best HT.

HeX · 4 Apr 2011 at 13:15

HT does naff all, just leave it at stock.

MOOGLEYS · 4 Apr 2011 at 13:20

The system goes unstable if I increase it on my board so I will leave it at stock. I have bought some Corsair XMS 3 1600mhz Ram as i'm currently using cheapo generic 1333 mhz stuff..

I had the Cpu posting and running windows last night at 4.4ghz @ 1.45v but the temps were pushing well into the 70's after only a few mins of prime. When I ran OCCC it froze. 4ghz on stock volts is more than enough for me so I think I will be leaving it at that...

Zaim · 4 Apr 2011 at 14:22

Here's my 1055t at 3.8ghz stable:
http://valid.canardpc.com/show_oc.php?id=1747667

will try 4ghz soon

John24 · 4 Apr 2011 at 14:22

HeX said:
HT does naff all, just leave it at stock.

That isn't true in my testing.

HeX · 4 Apr 2011 at 14:41

John24 said:
That isn't true in my testing.

You said yourself, it gives you a 'slight' performance boost.

On the whole HT overclocking gives minimal if any increase in performance, while at the same time often making overclocks unstable.

It just isn't worth taking over stock.

CPU-NB on the other hand can give some pretty big improvements.

John24 · 4 Apr 2011 at 15:02

Yeah, slight, not "naff all"

It's up to the individual to decide if it's worth it or not, which will partly depend on what their doing with the machine.

MOOGLEYS · 4 Apr 2011 at 15:09

my CPU-NB will only go to 2250 any more and it blue-screens..

Muel · 4 Apr 2011 at 15:22

CPU-NB gave me by far my biggest boost, gained up to 7fps in some stuff I seem to remember.

CPU 3.4ghz -> 3.8ghz
CPU-NB 2.0ghz -> 2.8ghz

John24 · 4 Apr 2011 at 15:43

MOOGLEYS said:
my CPU-NB will only go to 2250 any more and it blue-screens..

even with more volts?

MOOGLEYS · 4 Apr 2011 at 16:27

John24 said:
even with more volts?

Did not try more volts. My board is only a MSi micro atx with quite a small NB heatsink. Don't really want to push it too hard..

eddyc · 4 Apr 2011 at 19:23

MOOGLEYS said:
Did not try more volts. My board is only a MSi micro atx with quite a small NB heatsink. Don't really want to push it too hard..

But the cpu-nb is not the same as the motherboard nb. I dont think the motherboard nb heatsink is relevant. So long as you can keep your cpu temps under control you should be okay.

I am not certain though. Others confirm?

John24 · 4 Apr 2011 at 19:46

So what you meant then is it'll only go to 2250 on stock volts. Which is actually quite good.

Indeed the CPU-NB is the integrated memory controller on the CPU, it has nothing to do with the motherboard northbridge. I guess moogleys is worried about his VRMs, which are to the left of the CPU socket, not under the northbridge HS.

"MSI micro atx" is ringing alarm bells, check out the quality of the VRMs over at overclock.net before attempting any overclocking.