Tom's Hardware > Forum > Overclocking > AMD > 1 core is STUD, the other is a DUD in my Opty Overclock

1 core is STUD, the other is a DUD in my Opty Overclock

Forum Overclocking : AMD - 1 core is STUD, the other is a DUD in my Opty Overclock

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Hope you love the title. Anyway, here is the problem. As it sounds, my new opteron 165 has core 0 which maxes at 2.75GHz and core 1 which is stable at 2.925GHz (my boards max HT x 9). This is an extremely new cpu, it was installed friday.

Temps have been consistently going down as the artic silver has set. It was priming at 54C on saturday, now it is at 49C.

Any thoughts on how to improve overclock?

Would running Sandrasoft CPU Burn in help any?

I've also noted that my VCore fluctuates from 1.42-1.50 averaging at 1.44. This could be a possible culprit if prime95 did not fail on core 0 in under 1 min irregardless.

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dude, stop complaining. that is your max

Reply to godlyatheist

What do you expect neibour???You got a very fast cpu.To be honest,the power of an AMD cpu is in its architecture not its speed.Live with what you got,you'll be happy.

Dahak

AMD X2-4400+@2.6 S-939
EVGA NF4 SLI MB
2X EVGA 7800GT IN SLI
2X1GIG DDR IN DC MODE
WD300GIG HD
EXTREME 19IN.MONITOR 1280X1024
THERMALTAKE TOUGHPOWER 850WATT PSU
COOLERMASTER MINI R120

Reply to Dahak

I am very happy, but would have loved to push it stablely to its max. The max is around 2.97GHz, with a max VCore of 1.4+.05V. Just really wanted to see what this thing can do especially when I gent my R600 this summer.

Reply to johnjk

Then make sure you have the ram to oc with.

Dahak

AMD X2-4400+@2.6 S-939
EVGA NF4 SLI MB
2X EVGA 7800GT IN SLI
2X1GIG DDR IN DC MODE
WD300GIG HD
EXTREME 19IN.MONITOR 1280X1024
THERMALTAKE TOUGHPOWER 850WATT PSU
COOLERMASTER MINI R120

Reply to Dahak

Don't see how ram will help when the limited VCore is the issue.

Reply to johnjk

Do you not have the ability to change your vcore in the bios??And if you do,you might try changing the HT to 800 form 1000 for system stability.If that does not help,then check to see if your multipier is unlocked going up.If so,then increase it.

Dahak

AMD X2-4400+@2.6 S-939
EVGA NF4 SLI MB
2X EVGA 7800GT IN SLI
2X1GIG DDR IN DC MODE
WD300GIG HD
EXTREME 19IN.MONITOR 1280X1024
THERMALTAKE TOUGHPOWER 850WATT PSU
COOLERMASTER MINI R120

Reply to Dahak

No offense, but I'm not retarded. Yes I can chang the VCore in bios, but my shi**y A8R-MVP has a max VCore of 1.4V for dual core 90nm chips. HT multi is at 3x making the HT Link 933, since bus speed is 311. This is a Opty 165 so the max multi is 9x, which what I am currently at. The bus speed is not my limitation, it is the limited VCore leading to limited Core Speed.

Thanks for trying anyways.

Reply to johnjk

Ok.Just thought maybe you didn't know about vcore.I guess you either have to get another mainboard or live with what you have.Goodluck.

Dahak

Reply to Dahak

this is nothing new to you im sure... but, cores on a cpu will always clock higher than another cores, perfectly normal... the slowest core being the limiting factor in overclockability... right now your stable OC stands at 2.75 as a whole... ...since youre not having any issues reaching 2.925 on core 1 with your MB, it doesnt seem too likely that youll be able to raise core 0 much above 2.75, regardless of MB, since thats where it maxing out now, and youre able to acheive 2.925 as it is, without problem

i dont think this is possible, at least not that ive heard... but 'if' you were able to apply different voltage amounts to each core, you could possibly reach a higher clock speed on core 0, and maintain core 1s clock speed

Reply to choirbass

uhmmm ... noob here .... just sitting in the corner listening and meekly raises hand ......
I didn't know that the cores on the same die could run at different speeds! I guess it makes sense - sort of. Could you explain or point to a link please?

I'll sit down and be quiet now.

edit - OMG - can't believe you were addressing that as I was writing - lol

Reply to piratepast40

they cant... but hes saying 1 core isnt stable at a set clock speed when being stressed (even if it is clocking up to that speed), and the other core is completely stable when being stress tested at that speed

Reply to choirbass

Quote :

Ah --- OK. Was just trying to pick up another tidbit of knowledge. Thanks

Reply to piratepast40

9x311 is not too bad, my highest 100% stable is 9x312 at the same vcore. But yeah, you have the options of either doing a vmod or geting a mobo which allows for a higher vcore. Myself im using a asrock dual sata slab which i intend to swap for a dfi one as soon as i get rid of my 7800gs.

Reply to antikristuseke

My A8R32 MVP goes to 1.5, and actually it always shows up in cpuz as being .5 volts higher than I actually set in bios... so I guess technically it can go up to 1.55... but in my experience raising the voltage doesn't always help with opterons anyways.

Reply to LAN_deRf_HA

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