dreadlord369

Hey guys, I recently flashed my 8800gtx from its stock voltage at 1.3v to 1.4v which gave me some extra overclocking headroom. Before the flash I was at 648 mhz on the core but after, I was completely stable at 684, and I was also able to push the shaders one strap higher.
Well I was thinking, do you guys think its safe to flash the card to 1.5v?
I don't know if the card will accept going that high(I'll try to see with a voltmeter if I can) but do you guys think that 1.5v is alright? Or will it hurt the chip too much and kill it within a month or something?


P.S. My temps are fine so I don't think that they will be an issue. (47 under load)

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Biatch

I would like to have a water cooled system, too.

My CPU does heat pretty well and I use only 1.25V.

dreadlord369

Anyone?

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HandOfDoom

..

tweakboy

That's ridicolous voltages.

Im @ 1.1v and look @ my core. 9800 is same thing, a marketing stunt gone array... lol

grahamcrackuh

Thing with graphics cards (at least with stock heatsinks), probably applies to water too (since the VRMS are not usually on the waterblock), is that you have to be extremely careful about adding voltage. If the VRMs are trying to put through too many volts, your overclock can be even less stable. VRMs will overheat very quickly.

My suggestion is that you bring it back down to 1.2 volts and throw some enzotech mosfet heatsinks that you can get at jab-tech on your VRMs (if there's room). With graphics overclocking, I have often found that less is more.

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tweakboy

I owned a 9800GT too , same voltage 1.01 stock.

What are you guys doing , my gosh the GPU will burn and blow up , This is GPU abuse, Im calling the GPUPD. my goodness,,

grahamcrackuh

Not really, the G92 architecture is said to be good until 1.5v


if properly cooled. I have also discovered that most people hit between 800 and 900 with only 1.35 volts, so keep that in mind OP.
http://forums.guru3d.com/showthread.php?t=247576

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dreadlord369

Well I already have the enzotech heatsinks on my vrms with a couple a fans blowing directly toward them so they should be legit. Also, I've just decided to stick with the 1.4v because from reading tons of articles and about people who have tried to do higher but anything above 1.4v doesn't do much.
And btw, the stock voltage for the 8800gtx is 1.3v and the 8800 ultra(same chip with higher voltages, higher clocks, and different cooler) has a stock voltage of 1.35v so 1.4v isn't really too much of a jump. I guess the g92 chips are just more efficient so thats why the voltage is so low on them.
But thanks for all your help!
+rep

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Blameless

Every die shrink tends to bring lower votlages. The G92 is a 65nm (and later 55) chips. The G80 in the 8800GTX is a 90nm and starts at a higher voltage.

Anyway, I think 1.5v will be ok for the G80, on water, if you have decent VRM cooling. On air, I'd think you'd add too much heat to seen a benefit in OCing, and might jeopardise the VRMs.