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****Official GTX580 user reviews/benchmarking/overclocking thread****

stock
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900-1800-2250
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900-1800-2250
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hmmm
well im not going to get into the vantage thing
ive seen too much of jane nash's rear end this afternoon, its givin me the horn
heaven results look ok tho ?
 
What volts are people running a? Mine, at stock were 1.063. Got the clocks up to 820 and Heaven ran fine but Crysis crashed. Got em at stock at the moment lowered volts down to 1.025 Heaven ran fine. Havent tried Crysis yet.
 
How are you increasing voltage?

Afterburner voltage controls are locked, here, selecting unlock does nothing.

Nevermind, download says v2.1 but it's actually v2.0, downloaded from another source and now it's working.

My default appear to be 1.025v, is that right?
 
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I am tempted to buy a 3rd 580 but concerned that even at 4.2ghz at 2560x1600 it won't be a huge improvement like going from single to sli was.
Does anyone know how 3 way scaled on the 580 and what sorts of cpu speeds and res you need to make it worthwhile ?
 
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How are you increasing voltage?

Afterburner voltage controls are locked, here, selecting unlock does nothing.

Nevermind, download says v2.1 but it's actually v2.0, downloaded from another source and not it's working.

My default appear to be 1.025v, is that right?

Each gpu core is different.

1 have 1 evga which is 1.0v and the other is 1.02. Both need voltage increases in order to overclock past 830mhz though.
 

It amazes me that a few years back Jen Hsen was on stage launching a dell machine with the 7900gx2's inside in quad sli and stated that they scaled almost perfectly (which was utter bs). Now fast forward several years and the scaling of the 580 in quad is potentially even worse than its predecessors.

Is it down to drivers or more down to the game engine that scaling above 2 gpu's really falls off? Some would say cpu limitations as well.
 
So what are you guys able to achieve for 24/7 overclocks?

I've tried a few games but almost everything seems to get some artifacts past 825 with voltage increase and pretty much any memory increase is resulting in artifacts.

So for benchmarking it's great, for gamings the overclock is pretty crap.
 
It amazes me that a few years back Jen Hsen was on stage launching a dell machine with the 7900gx2's inside in quad sli and stated that they scaled almost perfectly (which was utter bs). Now fast forward several years and the scaling of the 580 in quad is potentially even worse than its predecessors.

Is it down to drivers or more down to the game engine that scaling above 2 gpu's really falls off? Some would say cpu limitations as well.

Yeah, I read a review off 3 way 480's on either Guru or HardOCP where they showed the cpu limitation but they never bothered testing above 4ghz to see if they could get around it. I think at 3.8ghz at 2560 some games got a nice boost. Others ran the same speed or slower. Having said all that, I would have thought at the very least 3 way would give you the option of using 32X SLI AA or max out other eye candy.
 
So what are you guys able to achieve for 24/7 overclocks?

I've tried a few games but almost everything seems to get some artifacts past 825 with voltage increase and pretty much any memory increase is resulting in artifacts.

So for benchmarking it's great, for gamings the overclock is pretty crap.

I guess it's very time consuming to get an overclock stable in heaven, vantage etc.. and then check all your games. I have found over 850mhz things get flakey on my setup i.e. artifacts and the display driver stops responding eventually. Then again I have not pushed past 1.075v and there are plenty of people maxing out at 1.138v with 950mhz cores.

The other thing, is whether you will notice an extra 10fps for example by overclocking if the card is fast enough already. For gaming I just play at stock for now. I'll probably take another look and setup profiles for benching and settle on a profile higher then stock for gaming.
 
But you cant seem to unlock the voltage controls (Or have you?) when everyone else can. Most gtx480's need a voltage increase around 830'ish...

Yes I can, read my first post. However, things have improved after a restart, I guess you shouldn't carry on after the display driver has recovered from a crash. :o

Tried 850/1700/2100 1.050v in a few games, Crysis, Metro 2033, L4D2 and also heaven seemed OK, temps reached around 87C, 2-3C higher than at stock.

Vantage on extreme settings is behaving a little strangely though, not sure what to make of that.

btw maxed out at 925/1850/2150 1.25v, 950/[email protected] crashes and 2200 memory causes artifacts.
 
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