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max safe volts for gtx 400's

post #1 of 7
Thread Starter 
I have been using the rule, 1.1v MAX for air which has served me well and even my temps were decent compared to the OC I had.

But what about water, certainly there must be a max that dictated by hardware specs and not temps right?

This one will be a GTX 470 specifically.

It seems that the max by a BIOS mod is like 1.21v, so that would be the MAX in the software anyways.
post #2 of 7
"Safe" volts? 1.087.

Anything above, is at your own risk.
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post #3 of 7
i have seen SC cards that are up to 1.15v stock!!!!

in saying that i wouldn't go over that.....

also more voltage doesn't always = bigger OC

i mean i can get 860Mhz core on both of my 480s @1.1v...

and 900 core on one of them (wish they both did this)

but i can only get 820 Mhz core on 1.2v!!!!

heat isn't a issue since they are still only running at 68 Deg C at 1.2v 820 Mhz core....

they just don't like the extra volts....
post #4 of 7
1.15v is max safe on air, 1.22v is max safe on water (basically, the cap with the BIOS mod). The thing is, you have to keep your temperatures down to have it run stable. That's why I'm stuck at 800 core with 1.137v.
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Junkyard
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NAStradamous
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HTPC01
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CPUMotherboardGraphicsRAM
Intel i5 2320 @ 3.1GHz MSI B75MA-E33 HIS HD7970 3GB @ 1050 / 1700, 1.17v Patriot 2x4GB DDR3-1066 
Hard DriveHard DriveOptical DriveCooling
Crucial MX100 256GB WD Green 2TB DVDRW Corsair H50 Push / Pull 
CoolingOSMonitorMonitor
NZXT 120mm fans strapped to stock 7970 cooler Windows 10 Pro Dell 3007WFP Dell 2007FP 
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post #5 of 7
Higher voltages = higher temps. But if you can/able to control the temp on ur gpu u think its fine, its actually not. Pushing more volts is not only affecting the gpu temp itself, your pushing the other components more. Vrms, mosfets, phases,...etc name is not important. If you can cool these then you can go higher.
Take hodgoes2001 experience he actually had to drop the clocks with higher volts.
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post #6 of 7
Thread Starter 
Granted 1.2v might actually make it unstable, but is it still safe to use?

If I somehow managed to pump 1.9v and have 40C temps...the card would still be fried.

How does 1.2 compare?
post #7 of 7
Quote:
Originally Posted by kennyparker1337 View Post
Granted 1.2v might actually make it unstable, but is it still safe to use?

If I somehow managed to pump 1.9v and have 40C temps...the card would still be fried.

How does 1.2 compare?
1.9 is ultra high....

you probally found that you burnt out the VRMs not the GPU.....
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