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GTX 260 / 280 Overclocking Thread
- Thread starter Deluxe1
- Start date
Usually the core and shader clocks are linked - and increasing the core clock will automatically pull up the shader clock with it... you can unlink the clocks and increase them independantly as often the overclocking potential of one will be different to the linked clock of the other... but so far from my experience with the 260 GTX 216sp unlinking them results in a big performance drop if you stray far from the preset ratio.
So some variance is possible then without seeing a perf drop? after reading what you said i pushed the shaders to 1500 and the mem to 1275, the core i kept at 700, this results in an increase of 15.7, 15.1 & 16.6 % respectively on all 3, did you see this drop in perf from small variences of only 1 or 2% or did it only happen with larger variences, i tested on mass effect and the game did seem fractionally smoother, from my prev overclock settings which were 1250 mem and 1450 shaders same core, these in turn gave a fractionally smoother exp from stock.
Soldato
- Joined
- 26 Dec 2005
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- 16,189
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- Paisley
I updated my nvidia drivers last week to the latest ones, and now rivatuner dosent show my clocks to overclock them.
Is there a fix for this?
Is there a fix for this?
Yes
Use Evga Precision instead of Rivetuner .
http://www.evga.com/precision
I wont use rivatuner any more now that Evga has made Precision .
BTW: My bench settings on my sli Evga 280 rig is 735/1325/1500 .
Those are the stock 605 core gtx 280s
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Furmark may raise temps but I don't find it a great test, I get issues in Crysis long before furmark gives me any trouble.
when you say "trouble" can you be more explicit?
The usual, crashes then I get message saying display driver has stopped responding, don't even see any artifacts with furmark.
Crysis bench and cod4 .
I get arty in ATI tool way before i get and problems in a game .
I still dont understand why someone would use an ATI tool on a Nvidia card ?
Associate
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- 27 Aug 2007
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- 334
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- Surrey
I have always used ATI tool to check for artifacts. Are you saying that I should ignore ATI tool, OC further and use Crysis/3DMark etc to check for stability?
Would genuinely like to know... cheers.
Yes ,, hehe
If your a gammer like me use a game to bench with .
If your benching a game demo with an nvidia card dont use a tool made by the compitition to set your limits .
what's your max overclock on your maxcore??
as soon as my shaders are pushed pass 1500, it artifacts all over the place on ATI Tool. but i can benchmark in pretty much any humber below 1600 without crash........
Same - 1500+ it gives artifact delta in ATITool but will benchmark upto about 1600 - however anything over 1458 will lockup ETQW after ~5 minutes of playing.
Unlinking the core and shader clock seems to only allow you to clock the core upto half of the shader clock i.e. 1400 on the shaders is 700 core. If you manually force it to something different as I was doing before you get big performance drops - but you can unlink and overclock fine if you stick within the ratios.
Also cooling seems to have a big effect - if you can keep the temps below 55C or so you can increase the shader core much more.
Unlinking the core and shader clock seems to only allow you to clock the core upto half of the shader clock i.e. 1400 on the shaders is 700 core. If you manually force it to something different as I was doing before you get big performance drops - but you can unlink and overclock fine if you stick within the ratios.
Also cooling seems to have a big effect - if you can keep the temps below 55C or so you can increase the shader core much more.
Soldato
- Joined
- 26 Dec 2005
- Posts
- 16,189
- Location
- Paisley
Cheers for that bud, looks good.
Hello All,
finally got me a BFG GTX 280 OC today, will be putting it into my rig in about 2 hours when i get home.
as with the rest of my system, i'm interested in pushing this card as far as i can go for long term gaming purposes, (once i find my sweet spot clocks, i want to keep the card this way for gaming until i eventually get another one.) so i'm not really interested in "how high can i get it" but rather, how high can i get it and for it to still be stable and not burn out on me ;p
however i haven't done a GPU over clock in a while, what are the best programs to perform the overclock with and to check for errors/crashes/artifacts with?
i seem to hear about EVGA Precision being mentioned as a good one? a long with GPU-Z of course.
finally got me a BFG GTX 280 OC today, will be putting it into my rig in about 2 hours when i get home.
as with the rest of my system, i'm interested in pushing this card as far as i can go for long term gaming purposes, (once i find my sweet spot clocks, i want to keep the card this way for gaming until i eventually get another one.) so i'm not really interested in "how high can i get it" but rather, how high can i get it and for it to still be stable and not burn out on me ;p
however i haven't done a GPU over clock in a while, what are the best programs to perform the overclock with and to check for errors/crashes/artifacts with?
i seem to hear about EVGA Precision being mentioned as a good one? a long with GPU-Z of course.
Yep, EVGA precision is awesome. Set all the clock speeds and fan speed. Save differnet clocks as different profiles and it will load those manual clock speeds each time you boot Windows. Has a handy in game display which can monitor FPS, temps etc