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Official Phenom II x2 500 Club! - Page 400

post #3991 of 4289
ya i know ive been trying to clock then pass ~1600 im at right now. i have had up to ~2300 stable.
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post #3992 of 4289
I have bumped up the voltage to 1.42v to get above 4GHz and have run Prime95 at 4.2GHz for about three hours. Changing to a Hyper 212+ heatsink has reduced temperatures significantly from my Zalman 9700. At 4GHz, I stopped testing when temperatures crossed 55c with slight increasing trend (four cores). With the 212+ cooling, the temperatures stablized out at 45-46c. Running two cores at 4.2GHz, temperatures are stable around 38c. I will switch back to four cores later today and let the system run long enough to find the steady-state temperatures at 4.2GHz.

On the downside, between this CPU and my ATI 4890 GPU, the system draws just under 300 watts power as measured by a Kill-a-watt meter. Quite an increase from my AMD BE-2400 dual core on integrated ATI 4200 graphics. That system draws 39-50 watts. Of course, gaming is "not quite" as good.

CPUZ Link after 4 hours 14 minutes of Prime95
http://valid.canardpc.com/show_oc.php?id=1161164

It took 1.44v to get stable at 4.1GHz with all four cores enabled. CPU and MB temperatures were at 57c which is too high for my comfort. I think the sweet spot for my 555 BE with four cores is 3.8GHz. It is stable with much less voltage and lower temperature at that speed and is still a hugh increase over two cores at 3.2GHz (stock).

I use this setup mostly for gaming and plan on running dual core at 4.0GHz most of the time. When I want to do video encoding for my portable devices, I will switch on the other two cores and run at 3.8 or 3.9 GHz.

Running 4.0GHz with Prime95 for about 4 hours with 30c reported for both cores and 34c MB temps at core voltage of 1.296v.

http://valid.canardpc.com/show_oc.php?id=1161981
Edited by Lark888 - 5/1/10 at 6:29pm
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post #3993 of 4289
My cpu doesn't unlock, and I can't get to 3.8ghz unless I want to go past 1.5v which I don't. Any other ways to attempt unlocking besides the obvious? Tried bumping the voltage all the way up to 1.475 at stock 3.1ghz with no luck. Am I stuck? Not that I really need the quad, but it would have been nice to see it...

Temps are never a problem, and i'm stressing now at 3.7ghz @ 1.42V.

Also, was wondering if it's normal for peak load voltage to change slightly? Looking at hwmonitor, the max voltage was 1.42V, but it is currently at 1.41V. (1.408 according to CPU-Z)
post #3994 of 4289
Shooter - Getting 3.7 to 3.8 seems reasonable for most 550 - so that looks pretty good. However, when you say that it will not unlock - do you mean that you can't boot after unlocking (ACC Hybird Auto) on the Gigabyte board?

I did find this comment for your board that may apply.

"It should be pointed out that there is an updated rev. 2.0 version of this motherboard that features the newer SB710 southbridge, and that model does support Advanced Clock Control. However, the MA770-UD3 rev. 1.0 that we are reviewing features the SB700 southbridge which does not support ACC. The updated MA770-UD3 rev. 2.0 features the newer SB710 southbridge, which does support ACC and which has the setting present in the BIOS."

However, some of these CPUs do not boot at all if unlocked. They appear to be real X2s made from x4 with broken core(s). You might try to boot the individual cores and get an x3.
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WD1001FALS-00J7B1 ATA Device LITE-ON LTR-52246S Win7 RC MonitorViewSonic VX922 [19" LCD] 
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AMD Phenom II X4 BE (unlocked 555BE) Gigabyte GA-MA790X-UD4P 3D AcceleratorATI Radeon HD 4890 (RV790) Corsair XMS2 CM2X2048-6400C5 
Hard DriveOptical DriveOSMonitor
WD1001FALS-00J7B1 ATA Device LITE-ON LTR-52246S Win7 RC MonitorViewSonic VX922 [19" LCD] 
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post #3995 of 4289
Quote:
Originally Posted by Lark888 View Post
Shooter - Getting 3.7 to 3.8 seems reasonable for most 550 - so that looks pretty good. However, when you say that it will not unlock - do you mean that you can't boot after unlocking (ACC Hybird Auto) on the Gigabyte board?

I did find this comment for your board that may apply.

"It should be pointed out that there is an updated rev. 2.0 version of this motherboard that features the newer SB710 southbridge, and that model does support Advanced Clock Control. However, the MA770-UD3 rev. 1.0 that we are reviewing features the SB700 southbridge which does not support ACC. The updated MA770-UD3 rev. 2.0 features the newer SB710 southbridge, which does support ACC and which has the setting present in the BIOS."

However, some of these CPUs do not boot at all if unlocked. They appear to be real X2s made from x4 with broken core(s). You might try to boot the individual cores and get an x3.
Thanks, I failed prime blend with 3.7 @ 1.42V.. but now I think i'm finally stable at 1.44V and will keep it there since CnQ makes me happy.

About the board, I have the Revision 2.0 so of course I was excited that I would be one of the lucky ones.. Hybrid ECC/Auto ACC gave me no luck at all pretty much so the X4 deal kind of feels like it's out of the water now. I haven't fiddled with the per core percentages though because TBH I would rather just stay at X2 than X3 but we'll see! Maybe i'll give it a shot just for kicks.

It does appears that I have at least one defective core though
post #3996 of 4289
Lark I can't believe your cpu... mine won't do 4 GHz even after 1.45V. I will try to bring the NB and HT to stock (2000 and 1800) and try again. Seriously... less than 1.3V for 4GHz? O_o
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post #3997 of 4289
yea... i'm pretty jealous of that to say the least, lol.
post #3998 of 4289
My little oc
Temps Idle: 35C
CPU-Z Validation: http://valid.canardpc.com/show_oc.php?id=1177153
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post #3999 of 4289
Yea, I feel pretty lucky on this one. More typical for me is the middle of the road overclocking. My x3 720 would only do 3.5-3.6 and required much more voltage. The last chip that felt as nice for overclocking was my Celeron 300a from way back....

I can run this chip faster with more voltage but low 30c range temps for loaded at 4GHz and less that 1.3v makes the overclock seem like running at stock (worry-wise) so I will likely stay here most of the time.
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WD1001FALS-00J7B1 ATA Device LITE-ON LTR-52246S Win7 RC MonitorViewSonic VX922 [19" LCD] 
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AMD Phenom II X4 BE (unlocked 555BE) Gigabyte GA-MA790X-UD4P 3D AcceleratorATI Radeon HD 4890 (RV790) Corsair XMS2 CM2X2048-6400C5 
Hard DriveOptical DriveOSMonitor
WD1001FALS-00J7B1 ATA Device LITE-ON LTR-52246S Win7 RC MonitorViewSonic VX922 [19" LCD] 
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post #4000 of 4289
Oooh oooh I want to join!

Phenom II X2 555 BE (C3)
Clockspeed = 3.8GHz
FSBxmulti = 200x19
Vcore = 1.360V
RAM Speed = 800MHz (DDR2)
NB Speed = 2400MHz
HT Link = 2000MHz
Motherboard = Gigabyte MA785GM-US2H
Cooling method: Corsair H50 + 2x Corsair fan push/pull

http://valid.canardpc.com/show_oc.php?id=1175931

This is a pretty dirty overclock consisting mostly of cranking the CPU and NB multi up to 19 and bumping Vcore up one notch. I haven't seriously tried for 4GHz (it seems to need more than 1.45V).
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