How to overclock GTX 670's ?

[Mr. May]

I have 2x Evga gtx 670 F T W which has a GTX680 pcb and cooler.

So the power target is 145% and runs cooler than a standard 670.

But when ever i change any off the setting bf3 just crashes

So where would you start and what would you do??

I have the cards running @ PCI-E 3 and a 3930k @4.5

 

[Mr. May]

They are boosting to 1176 at stock and not going over 60 degree's on the top card, with all setting default how far can you push a 670 ?

 

[F1aw1ess]

something is wrong if BF3 just crashes the moment you take them off stock,I'd be extremely surprised if you had no headroom what so ever.

What program are you using to change the clocks? does it do the same thing if you slightly downclock too? If yes then I would say its the program your using to set the clock that might be the prob, I use afterburner myself and can get my 670 up to 1360mhz boost

btw: real nice temps on the top card, that under water?

 

[illuz]

Youre running SLI 670 and its running really cool, you dont need to overclock at all?

What program are you using anyway?

 

[OptimaLnrg]

I trust you're testing the core first in 10mhz steps?

Take one out and try overclocking one at a time to find their limits. You could have one **** clocker that's holding the other card back? (assuming you are syncing settings to both gpus)

 

[Mr. May]

Nope both air cooled in a RV01 but will be watercooled with a 3rd at some point.

What the point in buying F T W edition cards if iam noting going to Overclock?

I think i may have sorted it maxed out the memory @ 3300 only just started on the core and I am getting 1227 atm with +47 volts on 1075 and power on 145%

I am using EVGA X thingy ma bob

 

[Snodge]

Evga FTW's have unlocked volts?

On Battlefield 3 I have mine stable at 1215/1750

Gigabyte windforce x3

 

[Mr. May]

Why are the volts went to be locked ? they go up to 1175 max

 

[covenantuk]

At present, all the GTX670 have that max voltage. AFAIK it would need a BIOS mod to unlock higher voltage.

 

[Snodge]

Well my temperatures are soo good I want to up voltages for a higher clock but that's unfortunately not possible

 

[Mr. May]

Whats the max voltage ? and what bios would i need to unlock ?

 

[Snodge]

Don't think you can, Highest Unigine score here with my 670 was 2043 any good?

 

[psychodil]

You can't increase the voltage on the 670 cards without doing a volt mod, which will invalidate your warranty. No point water cooling them really.

 

[Mr. May]

How would you go about volt modding it ?

 

[setter]

Shame that the voltage is locked. Got a pretty decent clocking windforce here, (1320mhz core, 7560mhz on memory). Scores 2102 in heaven, with a voltage increase i could likely eek a bit more from it, such a cool running card as well.