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[Official]AMD 4GHz+ CLUB - Page 278

post #2771 of 3081
•Xylene
•Phenom II x4 960t PH-E0
•4199.9 MHz
•Corsair H100
http://valid.canardpc.com/show_oc.php?id=2201355


This voltage is under prime95, idle voltage is 1.488v.

How much more voltage is safe? I am on a H100 and max load is around 48c under prime95 large-fft's.
Edited by Xylene - 1/16/12 at 6:29am
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post #2772 of 3081
@Xylene

I usually stick to a maximum of 1.52v load on a Thuban. for a 24/7 OC, but with those temperatures I think up to 1.55v is fine. For benchmarks and other short runs you can go up to 1.6-1.62v and for validations 1.65v wouldn't be a problem.

@ShadowEW

Thanks smile.gif And yes, I used to have a 560 Ti but it had some problems with temps and unstable voltages so I sold it for a bargain to someone who'd only run it stock and got a 2GB HD6950. In this SS which is a few months old I had the GTX560 Ti still.

I'm adding a second HD6950 unlocked when I find a identical card secondhand. Sure hope my trusty XFX can handle it. It should but...

The stability issue is very wierd, had it with this CPU on multiple boards... Not that I can keep the temperatures low enough, heck i'm already doing 65c on 1.500v, but it's boot stable up to 4400Mhz with 1.562v. Can even get it somewhat stable at 4230Mhz as in I can run a games and benches pretty good with 1.512v but any form of stress testing or gaming like BF3 kills it very quickly. Higher vCore then that only kills it faster like it's temp related.


I'm goin to try to get me 1Mhz more HTT speed tonight for a grand total of 4136Mhz and a tad higher NB / HT / RAM speeds and see if that runs at least a short 45 min test of LinX on preferrably 1.488v...
With the oncoming CF set I can use every Mhz of extra performance smile.gif

Current BIOS settings:
CPU vCore: 1.45000v with LLC maxed which gives 1.464v idle and 1.488v load. For 1.500v load I use 1.46125v in BIOS which gives 1.476v idle and 1.500v load.
CPU-NB on 1.2875v with LLC maxed which gives 1.26v idle and 1.29v load.
NB on 1.225v.
NB1.8v on 1.855v.
HT on 1.225v.
SB on 1.15v.
DRAM on 1.7325v which gives 1.74v.
DRAM CTRL REF both set to 0.450 which increased my RAM OC quite a lot.
Edited by Imprezzion - 1/16/12 at 6:29am
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post #2773 of 3081
Quote:
Originally Posted by Xylene View Post

http://valid.canardpc.com/show_oc.php?id=2201355
How much more voltage is safe? I am on a H100 and max load is around 48c under prime95 large-fft's.

For a 24/7 Overclock people tend to say a max of 1.5v, although a lot try to keep under the 1.475v mark.
Personally, I'd be happy with your vCore, and be trying to lower it rather than raise it. (I have a 1090T / H100)

Never seen a 1600T to be quite honest. Can you back down the multi and raise the FSB (if it's unlocked) 960T.
I think your next step is to be finding the max out of your RAM rather than your vCore ^^;;

If so, try and drop the vCore steadily and aim for <1.5v
Quote:
Originally Posted by Imprezzion View Post

@ShadowEW
Thanks smile.gif And yes, I used to have a 560 Ti but it had some problems with temps and unstable voltages so I sold it for a bargain to someone who'd only run it stock and got a 2GB HD6950. In this SS which is a few months old I had the GTX560 Ti still.
I'm adding a second HD6950 unlocked when I find a identical card secondhand. Sure hope my trusty XFX can handle it. It should but...
The stability issue is very wierd, had it with this CPU on multiple boards... Not that I can keep the temperatures low enough, heck i'm already doing 65c on 1.500v, but it's boot stable up to 4400Mhz with 1.562v. Can even get it somewhat stable at 4230Mhz as in I can run a games and benches pretty good with 1.512v but any form of stress testing or gaming like BF3 kills it very quickly. Higher vCore then that only kills it faster like it's temp related.

I really wouldn't want to run a Phenom II past TJ Max (62C).
Not that it's an issue, but you're well past the dangerzone and into the unknown.

I too half plan to get another 6950. The only downside being I have a reference Sapphire 6950. Fullsize and a real pain to fit in the case alongside the HDDs x.x
Edited by ShadowEW - 1/16/12 at 6:35am
 
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post #2774 of 3081
I can't get those clocks on less than 1.5v, so I am just backing it down to ~4ghz and shoot for a higher FSB/memory speed. I don't run the box 24/7 but I still don't want to cook it.
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post #2775 of 3081
    
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post #2776 of 3081
Hi, I am new with this scorpius setup(bulldozer) and I need assistance on reaching a stable 4.5ghz mark or better.

RIght now I am at 4.5ghz that can boot but experiencing hardware failures on Prime95 and AIDA64 benchtests.

On Cinebench 11.5 I usually get a 5.02 score.
On SuperPI it takes 15min to process a 32mb iteration.

Here are my specs for now. (please check RIG)

And here are my BIOS settings.

D.O.C.P = On
Multiplier = 22.5
Memory Frequency = 1600mhz
CPU/NB Frequency = 2200mhz
CPU Volts = 1.4500
The rest are set to AUTO.

With this noob overclock(I know I am a noob) setup I could POST and go to windows and perform simple tasks without any bluescreen either on Cinebench, LinX and or IBT.

BUT can't pass PRIME95, I am getting an error of "Illegal Sumout" - "Hardware Failure"

I need your help guys with my Setup. I know my RIG is adequate enough to pass a 4.5ghz mark FULL 24/7 Stable.

I really need your help on setting my build smile.gif if its okay.
If you have this similar motherboard and processor, please post your settings aswell let me copy it if its okay.

Info:
Asus Sabertooth 990FX BIOS Update 0901 (latest from ASUS) from 0705.
RAM: Corsair Vengeance 4gbx2 1600Mhz C9
PSU: Seasonic Xseries X850
Cooling: Antec Kuhler H620 with DeepCool Z9 Thermal grease, Scythe Kaze Jyuni 1900RPM push pull config.
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post #2777 of 3081
@imprezzion - Try lowering your HT speed back to 200MHz +-100MHz. Theres no real performance imporvement raising it and it can cause instability.
Edited by dihartnell - 1/16/12 at 8:50am
post #2778 of 3081
2201968.png

Idle vCore is kinda deceptive, it's actually 1.476v light load and 1.488v heavy load. Any other LLC setting makes the voltage even more unbalanced plus it runs 1.512v idle then which is useless heat since it NEVER crashed on my with idle / light loads with this voltage.

CHanging the HT and NB and RAM back to a much lower clock doesn't help. I have already tried this by running everything on stock speeds with 200x21. This is also impossible to get stable.

Now, time for a little suicide run. Imma juice 1.65v into it and see how high of a multi it can boot on with 229.8 HTT smile.gif


EDIT: Poor thing... even 1.70v won't let it boot through Windows on 4500+Mhz.
On 1.64v Windows almost booted with a 4460Mhz clock bot kept BSODing as it opened Firefox to validate.
Now, I finally settled on the following clocks.

2201968.png

4365Mhz on 1.596v. Stable enough to run for 5 minutes and even do some 1m Prime. Heck, it even did the first test of 3Dmark 11 but then BSOD'd when loading the second test OLOLO.
Edited by Imprezzion - 1/16/12 at 2:02pm
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post #2779 of 3081
•Thermalbaked420
•AMD FX-6100/OR-B2
•4138.96MHz
•Air cooling \ 7 case fans - Idle temps = [CPU\35-36c] [Mobo\28-30c] [GPU\35-38c] [Loads increase temps normally by 8-10points]
http://valid.canardpc.com/show_oc.php?id=2208660
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post #2780 of 3081
Can't get anything above 4GHz fully stable. Just didn't get the best chip I guess...

405
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Edited by tw33k - 1/28/12 at 3:59pm
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