780 Overclocking question

[SuB]

So I've changed my 580's over to 780's and the joyous rapture that is my frame-rates is lovely

I overclocked my 580's using EVGA Precision, added some mhz here and there, added a little voltage etc..all was fine n dandy.

The new 'offset' stuff and 'power target' is all a bit like whuuut ?!?!

I added some offset (100 or so), ran some benches WOWSERS the scores went up, great, added some more (up to 150), and got some driver crashes/hangs... bugger.. is 150 too high? tried 135, same issue..

I set the power target as high as it'l go (they're waterblocked so temps are not an issue at all) and it didn't seem to make an awful lot of difference, although the voltage looked like it increased a little.

Do I need to pump the volts using the voltage panel as well on these? I've never done the offset/boost clock style overclocking before lol

Forgive the n00by question I just haven't overclocked using these types of cards before. If I need to pump volts that's fine just wanted to know.

TA Muchly

 

[tinytomlogan]

Power target maxed? n0000b. Thats probably causing it. Stop being a tard and work up like we tell everyone else.

Doesnt matter about the blocks smashing that power target or volts will kill the cards not temps.

 

[SuB]

Thanks Tom, that was really helpful.

Can you answer the core question now please?

(for reference: Should I be changing the voltage settings in the extra voltage panel in precision?)

 

[tinytomlogan]

Thanks Tom, that was really helpful.

Can you answer the core question now please?

(for reference: Should I be changing the voltage settings in the extra voltage panel in precision?)

I clocked all of mine without really touching volts. Just remember volts kill not temps. Work your way up dude - you get it harsh like everyone else does when Im drowning

 

[QuietOne]

I can get +100mhz core on mine and +400mhz memory. Anymore on either and I get artifacting and/or driver crashes. Thats on air with +38mV. You could try custom vbios?

 

[Agost]

Power target maxed? n0000b. Thats probably causing it. Stop being a tard and work up like we tell everyone else.

Doesnt matter about the blocks smashing that power target or volts will kill the cards not temps.

Wow, I didn't know that setting a higher power target could cause instability... that's quite strange in fact

Now I'm stable on Valley ( Asus GTX 670 ) with +100/+200 @stock volts and TDP, even if the TDP indicator in GPU-Z still shows a peak of ~115%. I had the power target set to 113% before and the driver usually crashed after a while: however I can see small fluctuations on boost clock after the test, going from 1100 to 1150 MHz during the run


But the statement about volts&temps isn't completely true: higher voltage obviously kills but higher temps significantly increase electromigration on chips, therefore shortening a lot the mean time before failure