Best Opteron Overclock on Stock Volts?

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11-18-2005, 03:22 AM
Bar81

Quote:

Originally Posted by shiznit93

its pretty clear that the title says "Stock Volts". that means no 1.36 (1.40 in bios) and up.

Exactly.
11-18-2005, 03:45 AM
dogsx2

Quote:

Originally Posted by Bar81

Well, I think most/all of these "default" vcores are anything but. 1.4v under load isn't default. 1.35 is sometimes default depending on chip, and under load you'd be lucky to have 1.35v going through the chip on any mobo even if your opty's default vcore is the higher 1.4v.

Anyway, since I can't use anything but default on my ASRock I'll give you a real oc on default volts. Dual Core Opty 170 does 2.5Ghz (10x250) easily and that's on Scythe Ninja with a sub 1000 rpm fan blowing on it and a sub 1000 rpm fan exhausting hot air from the system. Haven't tried higher yet.

I have an Asrock and they will do .05v over the cpu's rated volts. If rated is 1.4 then they will do 1.45.
11-18-2005, 03:50 AM
dogsx2

Quote:

Originally Posted by shiznit93

its pretty clear that the title says "Stock Volts". that means no 1.36 (1.40 in bios) and up. mine is priming now @ 2.7ghz 1.31v (set to auto in bios), ill post a screenshot in the morning.

When I set my 144 to auto/auto in bios, it comes out as 1.36 on cpuz. I've had 4 different optys and 1.36 is the lowest default I've had.
11-18-2005, 03:59 AM
Dumo

Just be carefull not to run stock vcore with high vmem (>3.1V)... :)
11-18-2005, 04:05 AM
5days

Quote:

Originally Posted by Bar81

Exactly.

I get it now. But your wrong. Stock Vcore for an Opteron's 144-154 is anywhere from 1.35 to 1.40V.

However, stock Vcore for Opteron's 165-175 is anywhere from 1.30V to 1.35V.
11-18-2005, 04:20 AM
Fr3ak

Quote:

Originally Posted by Dumo

Just be carefull not to run stock vcore with high vmem (>3.1V)... :)

Could you explain why? I did so and I think there was nothing wrong with it ..
11-18-2005, 04:25 AM
5days

Quote:

Originally Posted by Fr3ak

Could you explain why? I did so and I think there was nothing wrong with it ..

I believe that stock Vcore and 3.3V Vdimm is alright, but any higher and I would bump the Vcore accordingly. Read Tony's sticky about Vcore.
11-18-2005, 06:16 AM
uOpt

My new 146 CABYE 0540 FPAW does 3.0 GHz at stock volts (which is 1.4 V) :banana:

Not bad for a $189 shipped chippy :)

(that is for short testing only, no 36 hours prime 95 yet)
11-18-2005, 10:32 AM
shiznit93

no not bad at all. i'm happy with 2.7ghz @ 1.31v on my dual core. when i get a motherboard that doesnt overvolt the 110w opteron i will start turning up the voltage a little.

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