GTX 280/260 overclocks thread

Did you OC your card by BIOS or via rivatuner or EVGA precision ?

I dont know why but i cant flash that one GTX no matter what i do.

 

Is it possible to edit the fan speeds with nibitor? I've just looked at the options so far and dont quite understand it, is there an NV utility similar to RBE?

 

Hey guys, you all that are pushing the core up 740+ are probably just running at 3xx, at least thats what happens to me. GPUZ reports the OC, however if you look at EVGA's prcision tool you can see the downclock, and never kicks back up till you lower it, just a heads up. Performance wise even at 333 core, my vantage scores are still high, P11k+, I spose cause the shaders do all the hard work.

Heres what happens to me,

750 downclock


735


I'm not 100% sure if the downclock pictured is accurate, as my vantage scores are slighlty lower when I lower the clock and it displays correctly, HOWEVER, one thing I have noticed is things are slighlty more fluid, the second test is the best example, when they do the flyby of the big assed carrier, when the core is supposedly downclocked it looks just a hair out of sync, like micro screen tearing, it isnt very obvious, something you probably wouldnt notice without knowing anybetter, or seeing it repetedly without first, when I cut back the clocks, and the readings are accurate, theat little imperfection is gone, if anyone can shed anymore light on this, please do so.

 

@ Iceman0124

Yeah mate it drops down because your shader is to low, your shader needs to sort of follow the core or that will happen. run your shader up slowly till the core speed jumps back up to the clock speed you have set.

I had this problem as well when i first got the card then i worked out the shader has to increase with the core to keep the clock speed i wanted.

Hope it helps

Gaz

 

http://service.futuremark.com/compare?3dmv=256857
Score 20,921
Highest I've ran Vantage sofar is,
Core 770
Shaders 1575
Memory 2600

 

That's a nice setup you have there USFORCES.

Great overclock on those cards 770/1575/2600 and a nice 3D score, Well done.

 

hey all, so i have this xfx gtx 260 oc edition, 640/2300/1363 stock settings. well basically, it runs hot as heck.. ive seen it hit 105c before on 40% fan, needless to say i run it 100% always after that. even with 100% fan its still getting to the high 90's. the thing is, ive seen some posts talking about artifacts showing up when it hits 60c... if thats the case maybe this sensor is busted, because it always runs fine and never gets a single artifact that i can see (under load its always above 75, idle 48). any ideas? if the sensor is accurate, im running this card all the time at temps hotter than you guys ever hit.

the point is, ive already done a little oc above the stock oc, got it stable at 675,1185,1390, and still no artifacts! 97c in furmark after 2 mins. should i keep going?

 

Core 739Mhz
Shader 1512Mhz
Memory 2664Mhz (1332)

Idle 36C, Load 58C 100% fan reference cooler.

Vantage P14711, X6040
3DMark06 17149

Core might go higher, haven't tried pushing any farther. Shaders limited at 1512, Mem limited at 2664. Flashed via bios to 675 / 1458 / 2620








Nothing above the ordinary really. Air cooling works well as I've got the case air flow next to perfect.

Thumbnails work when you click on them, httpd error on image hosting site or something.

 

Iceman, dont worry about that downclock issue. It's a problem with how the clocks are read when unlinked. Same applies to Rivatuner, Unwinder is working on a fix for both. The actual clocks are correct though it reads them wrong.

 

That's your house in the distance. Clock speeds and temperatures can often be inversely related. Meaning that when you want higher clocks, you'll want to try better cooling to maintain them as they require cooler temperatures. There's a reason why LN2 is used to cool C2Ds to achieve 5-6ghz, it because the cooler temps are required to hit these temps without getting error.

You may want to keep your temperatures at or below 80 to preserve the life of your video card, other wise you may find it'll fail prematurely. Are there any good after market coolers for the GTX 200 series yet?

 

well it seems to be running just fine, im not too worried about the life of the card thanks to the xfx double lifetime warranty. i feel like i should be getting some errors of some sort when it hits 105c but it seems to be doing alright. im gonna work on my cooling, but i suppose i might have to resort to aftermarket at some point.

 

the 280 doesnt like operating above 70c in general, so I cant imagine the 260 being much more tolerant. if temps are high I would imagine the memory timings would be loosened up via an alternative timing set.

 

Reference cooler works great, but there are a few nice full cover water blocks around if that's your slice of cake. I haven't personally seen anything on the market yet in the form of air cooling, perhaps nobody can improve over Nvidia's setup.

 

Oh great news. New version of Nibitor v4.4 finally has option to adjust Fan Controller IC settings on my GTX280 bios, so should work for the 260 also. Heres a screenshot of the settings I've used and rivatuner graph to show the result. Most importantly look at the fan duty cycle graph and the smooth linear curve.



Edit: It's also working for G92 cards, at least the 9800GTX bios I've just checked. But seems when I change a setting it all becomes unselectable / greys out. Guess it's available but not programmable after all.

 

Flashed my card with XFX XXX based modified 280 bios and looks like it has slightly improved the 2d/3d clocking situation on 177.79.

Bios version is 62.00.0E.00.75. I also loosened up tRFC, tRC and tRP in timing set 0 which I believe it uses, and now I've managed to push 2698Mhz GDDR without an artifact or a problem on air cooling. Clocks faster than 2710Mhz artifacts, and next step up is 2725.This is a whole 34Mhz more from my previous artifact wall. Memory timings seem a little too tight in some places, there is probably a fair amount more performance to gain if we had some basic memory testing tools written in Cuda.

 

I seem to prefer buying a gtx 260 over a gtx 280..does anyone else has that pereference?

 

I did a few Crysis runs so if someone is interested take a look.

It's GTX280.

Def. for this card is 670/1215/1460
24/7 stable OC that I'll use here is 735/1388/1535 - Crysis on very high and MassEffect 2 days for now no probs.


GPUz Screen and stable OC.





High, DX9, Stock, 3.6GHz





High, DX9, OCed, 3.7GHz





High, DX9, Stock, 4GHz





High, DX9, OCed, 4GHz

[/QUOTE]



High DX10, Stock, 3.73GHz





High, DX10, OCed, 3.73GHz





Very High, Stock, 3.73GHz





Very High 16xQ, Stock, 3.73GHz






3dm06

3.6GHz, Stock




4GHz, Stock




Cause of the low resolution in 3dm06 (1280x1024) the CPU even at 4GHz is bottlenecking the card at stock.

 

nice results man, awsome overclock ..from your results crysis is more cpu dependent then gpu... what are your fan speeds?

 

Well not really GPU is kinda more important but this resolution is too low so that's why CPU effects here, in ~1650x1050 or soo CPU shouldn't effect FPS at all.

Fan is on auto ( can't set fan profiles in Riva for some reason ... )



Oh, and one question for all GTX280 owners.
You might noticed that card won't reduce it's clock when in 2D mode ( and it should to 300/600/100 ) - you can see it in Riva Tuner Hardware Monitoring

I tried a few drivers so far but can't find the right one, so Vista x64 users what drivers do you use for you card if your card IS reducing it's clock speed when in 2D mode ?

 

if you use nvidia software you should be able to control the fan