Open1Your1Eyes0

Awesome man so 1.2v is safe confirmed.

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Psycho666

yeah, and i only have it watercooled for about a week now...before that i just had the stock cooling...so it was between 65c and 90c all the time
now temps are between 40c and 65c lol
all stressed temps...don't remember idle temps lol

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tha d0ctor

well you must make a decision, maybe its not worth risky the life of your card for a few extra frame but what about extra hwbot points, or even a coveted trophy...

I can't wait to get mine in the mail, I assume most of oyu are running stock cooling, how are you temps once you get around 1.2 at load, I wouldn't keep it going much longer than a few vantage runs

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Open1Your1Eyes0

That's my whole point of this thread. I'm trying to figure out what is the maximum safe voltage so I don't have to worry about the risk. 1.2v seems to be confirmed safe. Now I need a confirmation on 1.25v and beyond.

I'm running watercooling so temps aren't an issue. At 1.2v and 750/1575/2400 after 35 mins of Furmark I get 50*C on one GPU and 47*C on the other.

My other GTX295 running stock voltage and clocks on air cooling gets 97*C and 94*C in Furmark after 5 mins.

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Adrienspawn

This doesn't make sense.

Lower the voltage and up the clocks. Don't up the voltage and lower the clocks.

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Psycho666

i need the higher voltage for higher shader strap for more PPD
the lower clock on the mem and the stock clock on the core is just too keep temps as low as possible since my cpu is in the same loop, so it actually is pretty logical

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PizzaMan

Sorry to bring you the bad news, but temps are still an issue. The shaders will hold you back before voltage will. You'll have to concentrate on getting the temps even lower to increase your shaders so you can increase your core. The 1:2 core:shader ratio is a big killer. You'll find that even though you're giving more voltage you can't squeeze anymore out of the GPU. You'll find lots of peeps running on water having the same issue.

Psycho666, that's a nice shader clock. I'd be willing to bet if you raised your core clock to 800Mhz your shaders wouldn't be stable anymore. Just an example as to how sensitive the shaders are to temps.

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GTL testing and tweaking for all 7 series nVidia boards

Open1Your1Eyes0

I tried to raise my shaders from 1575 to 1600 and it wasn't stable. I doubt that lowering the temp even lower will make a difference. I don't think it's even possible to lower it more with underclocking something else.

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ChickenInferno

Voltage doesn't really help stabilize shaders at all; it is almost completely for the Core clock. The max shaders you can get on a given cooling is the max shaders you will get regardless of voltage. Shaders are extremely temperature dependant, hence high benchers use LN2 to get their shaders ridiculiously high. Shaders are equivalent to hitting a CPU temperature wall, at a given temperature you just may never be able to stabilize the speed regardless of voltage.

With that being said, I honestly do not know what the maximum safe voltage is for the GTX 295, but I wouldn't personally go anywhere near 2.0v. Also, nice avatar.

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The Truth about Temperatures and Voltages
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Psycho666

with an 800Mhz overclock my entire card goes up in smoke lol
with 1.2v i can game with 675/1674/1101...and that's rock-solid

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