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Highest safe voltage for an Athlon64?

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April 2, 2004 4:42:56 AM

Anybody have any idea what's the maximum safe voltage for an Athlon64 chip is? The older Barton/Tbred seems to handle 1.80-1.85 no problem. The Athlon64, same 130nm process, however defaults at 1.5V could it handle up to 1.8V for a period of time let's say 2-3years?

-AMD Athlon64 3200+@2300mhz -GAK8N -3x512 Hynix PC3200 ram@192mhz 2.5-3-3-7 -Albatron 5900PV @ 509/1000 -SB Audigy -Adaptec 1210SA Raid -2x120G Seagate SATA150 7200.7 Raid0 -Enermax 460watt psu
April 2, 2004 5:08:55 AM

The Maximum safe voltage is defined as the voltage you had just before you cranked it up and then noticed a burning smell comming from your cpu.


<b>My Computer is so powerful Sauron Desires
it and mortal men covet it, My Precioussssssss!
:evil: 
Regards,
Mr no integrity coward.</b>
April 2, 2004 5:14:31 AM

LOL thx that's helpful...

i'm currently running at 1.6V, and CPU temp never touched 40C, so i'm fine temp-wise, my mobo allows 1.7V, it's REALLY tempting to just crank it up but a little afraid of killing the chip.

-AMD Athlon64 3200+@2300mhz -GAK8N -3x512 Hynix PC3200 ram@192mhz 2.5-3-3-7 -Albatron 5900PV @ 509/1000 -SB Audigy -Adaptec 1210SA Raid -2x120G Seagate SATA150 7200.7 Raid0 -Enermax 460watt psu
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April 2, 2004 6:36:13 AM

If you look at overclockers.com u will see that cpu's in their database are going as high as 1.85v with good aircooling, 2v+ with water or phasechange.

Another advantage of the mobile chip thats not often noted is that its max temp is rated at 100C, not 85-95 like normal ones.
One suspects this is cauz they are hand picked chips and HAVE to endure higher than normal chips given a laptops generally inferior cooling solution.

<b>My Computer is so powerful Sauron Desires
it and mortal men covet it, My Precioussssssss!
:evil: 
Regards,
Mr no integrity coward.</b>
April 2, 2004 1:01:38 PM

i would guess, but not guarantee, the chip would survive 1.7v or even 1.8v for extended periods of time. Be carefull increasing vDIMM though, A64's are sensitive to this, and many motherboards will severly overvolt vDIMM for short periods of time (high fluctuation), possibly killing the ODMC, and therefore the cpu.

Also, A64's don't tend to gain all that much from overvolting, you could try it, but if it doesnt yield much better results (what I'd expect), just decrease it again.

= The views stated herein are my personal views, and not necessarily the views of my wife. =
April 2, 2004 4:04:35 PM

Well on my mobo there are quite a few voltage options, there's the VHT, for Hypertransport, the VDDQ, not sure what's that for, I didn't need to raise the vdimm, since i had to use the CPU/12 Divider. Anybody has any idea what VDDQ is?

-AMD Athlon64 3200+@2300mhz -GAK8N -3x512 Hynix PC3200 ram@192mhz 2.5-3-3-7 -Albatron 5900PV @ 509/1000 -SB Audigy -Adaptec 1210SA Raid -2x120G Seagate SATA150 7200.7 Raid0 -Enermax 460watt psu
!