AMD® Phenom™ II Overclocking Thread

~>Dg<~ · 17 Feb 2011 at 13:12

mine i have at 3.7 @ 1.4v since seeing how far it would go boot into windows and surf at 4.1 but not totally stable. can get fine at 3.9 but wants 1.5v and for 24/7 i dont think its worth the hassle.

3.8 seems to be the wall on these chips and often needs a nice voltage up .

welshdragon · 17 Feb 2011 at 21:58

Well I haven't tried for higher, may drop it to 3.6/7 just to ease it a bit....

jrwagh333 · 19 Feb 2011 at 13:37

Can't overclock using the BIOS because Asus have decided not to update the BIOS for my CrossHair II. Anyway, got these results, too much vcore? Temps only reached 43C under load and any lower vcore IBT fails.

Martini1991 · 19 Feb 2011 at 13:52

You should look at CPU temp, not core temp.

jrwagh333 · 19 Feb 2011 at 14:16

That is my CPU temp

HeX · 19 Feb 2011 at 15:26

Also run 2048MB for 20 loops for your burn test, 1GB and 10 loops doesn't stress it enough. Good indicator though.

Martini1991 · 19 Feb 2011 at 16:47

jrwagh333 said:
That is my CPU temp

What programme you using?
I doubt you're getting 43c under full load at 4GHZ with 1.5v.

jrwagh333 · 19 Feb 2011 at 16:59

HeX said:
Also run 2048MB for 20 loops for your burn test, 1GB and 10 loops doesn't stress it enough. Good indicator though.

OK will do.

Martini1991 said:
What programme you using?
I doubt you're getting 43c under full load at 4GHZ with 1.5v.

CoreTemp

DragonQ · 19 Feb 2011 at 18:01

I thought HWMonitor was needed to get accurate CPU temps for AMD CPUs?

HeX · 19 Feb 2011 at 18:21

DragonQ said:
I thought HWMonitor was needed to get accurate CPU temps for AMD CPUs?

It is, CoreTemp won't give you the right reading.

mmj_uk · 19 Feb 2011 at 21:08

jrwagh333 said:
...

Can't overclock using the BIOS because Asus have decided not to update the BIOS for my CrossHair II. Anyway, got these results, too much vcore? Temps only reached 43C under load and any lower vcore IBT fails.

I'm pretty sure you should be getting 70+ gflops with a 4ghz Phenom X6, I have a quad at 4.2ghz and get ~55gflops yours is hardly any faster.

Martini1991 · 19 Feb 2011 at 22:54

jrwagh333 said:
CoreTemp

That's not CPU temp.
Core temp gives a false reading... :rolleyes:

jrwagh333 · 20 Feb 2011 at 14:16

mmj_uk said:
I'm pretty sure you should be getting 70+ gflops with a 4ghz Phenom X6, I have a quad at 4.2ghz and get ~55gflops yours is hardly any faster.

I think it might be down to me using a AM2+ Mobo. Thus being on DDR2 and having a slower HTT

John24 · 20 Feb 2011 at 15:49

How does this look? Not tried lowering vcore yet. Why is the bus speed fluxuating? I didn't catch it change but OHM has recorded it. Turbo core and CnQ is off.

Martini1991 · 20 Feb 2011 at 16:21

jrwagh333 said:
I think it might be down to me using a AM2+ Mobo. Thus being on DDR2 and having a slower HTT

It could be throttling.
Mine used to throttle at 65C.

Yours isn't 43C..

At my calibration, 43C in Core temp would be 66C.

Muel · 20 Feb 2011 at 16:22

John24 said:
Why is the bus speed fluxuating? I didn't catch it change but OHM has recorded it. Turbo core and CnQ is off.

Tried monitoring it with HWMonitor as well?

Uriel · 21 Feb 2011 at 00:02

Just an update on how my Phenom FX-5200 is behaving in a different board:

Uriel said:
Just an update. I blew a VRM choke on my jetway board after updating my BIOS to accept DDR3-1600 (turns out it didn't like it - Jetway told me as much after the event). Got a Gigabyte GA-870A-UD3 for a quick replacement.

Having issues with RAM dividers and timings on this board, so it's difficult to reach the heights I was getting on the Jetway board. I have had the CPU up to just short of 3.6GHz on BIOS F2 but it's in no way stable up there and I'm pretty sure that RAM is the limiting factor. Updating the BIOS to F5A has pushed my max bus speed down a fair bit.

Having said that, the 8+2 Phase VRMs and current BIOS seems to be doing the CPU some favours. As a quad it'll now do 3.1 GHz on stock (1.15v) no problem. Currently running 3.3GHz on the cores at 1.2v and just under 2.3GHz on the CPU-NB at stock volts. That'll take 20x IBT on high.

RAM is running at 1148 mhz C7. If I try to loosen the timings I'm in no-post territory. The current BIOS needs higher RAM volts for this bus speed if approaching DDR3-1600 C9 (I was getting an easy 296 bus on BIOS F2 but can't get over 290 with F5A).

#

Edit: Just thought I'd mention - yes I am running 4 sticks of RAM.

Mirage · 26 Feb 2011 at 17:18

Spent quite a few hours trying different settings today.
Current settings:

CPU @ 4000MHz, 1.5V (1.488V in CPU-Z), 30/53 degrees idle/load
NB @ 2500MHz, 1.3V
HT @ 2000MHz
FSB @ 250
RAM @ 1333, 3:8, 8-8-8-8-24

Going to continue prime up to 6 hours but it's looking really good so far after a couple hours.

d_brennen · 28 Feb 2011 at 00:06

Got me a 1055t the other day, only really had time to play with it today. Seems insanely easy to clock these beasts. Got mine priming at 4ghz right now. Hwmonitor shows ~40c core temp under a Tuniq 120. I'll post some screenies tomorrow and hopefully someone will be kind enough to help me fine tune the rest of the settings

Martini1991 · 28 Feb 2011 at 08:00

d_brennen said:
Got me a 1055t the other day, only really had time to play with it today. Seems insanely easy to clock these beasts. Got mine priming at 4ghz right now. Hwmonitor shows ~40c core temp under a Tuniq 120. I'll post some screenies tomorrow and hopefully someone will be kind enough to help me fine tune the rest of the settings

That "Core temp", is wrong.