*GTX295 maximum safe voltage?* - Page 3 - Overclock.net

PizzaMan · 3 Weeks Ago

If you'll do some more research you'll find that me and ChickenInferno are right. Shaders are very temp dependent and these cards have so many shaders crammed onto them that it makes it very hard to OC.

ChickenInferno · 3 Weeks Ago

Quote:

Originally Posted by 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

Card goes up in smoke? Is it just so unstable it can't run or is it something else?

Open1Your1Eyes0 · 3 Weeks Ago

Quote:

Originally Posted by 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.

Quote:

Originally Posted by PizzaMan

If you'll do some more research you'll find that me and ChickenInferno are right. Shaders are very temp dependent and these cards have so many shaders crammed onto them that it makes it very hard to OC.

Thanks, you guys have been a great help. This really helped me learn more about the shaders, I remember reading that they are pretty moody with temps so thanks for filling me in. I guess 1575 is as far as I'll go with that core and mem.

Psycho666 · 3 Weeks Ago

Quote:

Originally Posted by ChickenInferno

Card goes up in smoke? Is it just so unstable it can't run or is it something else?

even with 1.25v i can't get 750Mhz stable...so 800Mhz is waaaaaay over the top

Open1Your1Eyes0 · 3 Weeks Ago

You guys should post some bench results here:

http://www.overclock.net/nvidia/5742...results-7.html

Adrienspawn · 3 Weeks Ago

I don't think OCing should be making a big difference in temps, especially watercooled. I don't notice a difference on my 285 between stock and 741/1580/1323. I haven't seen an example for GPU's or CPU's where increasing clock made more than a 1-2C difference at most. Granted it's been a while since I had a 295 on air, but I remember that temps were fine with the fan at 100% no matter the clock (never upped the voltage, I don't think the Tuner was out yet).

hombredelassrtas · 3 Weeks Ago

with voltage increase i see a larger increase in temp. there is also a slight increase when maxing the non upped voltage OC

brettjv · 3 Weeks Ago

I've never had a card (and I've had at least 15 different models over the years) where temps increased dramatically from just overclocking. Overvolting is of course a whole different story. I have however had a few cards where I could eek out an extra core and shader strap by cranking the fan up to 100%. To me, though, that is a bit silly except for the occasional benchmark run. It's not worth the extra noise just to grab an extra frame or two ...

Clockadile Dundee · 3 Weeks Ago

Quote:

Originally Posted by brettjv

I've never had a card (and I've had at least 15 different models over the years) where temps increased dramatically from just overclocking. Overvolting is of course a whole different story. I have however had a few cards where I could eek out an extra core and shader strap by cranking the fan up to 100%. To me, though, that is a bit silly except for the occasional benchmark run. It's not worth the extra noise just to grab an extra frame or two ...

Not to mention, say I set up an OC on a strap that is on the edge of stability:

I would worry that the ambient temps shifting normally in the environment (seasonally or W/E), would sort of shift you into, and out of, stability.

If the shaders are so sensitive to temps, your rig could be stable in the morning, but unstable for lunch.

bluebunny · 3 Weeks Ago

i think i might be a little late but i got my card rock solid at 1.13 with OC of 702/1548/1152
if this helps at all...

		Overclock.net - Overclocking.net > Graphics Cards > NVIDIA
*GTX295 maximum safe voltage?*

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)