[stryk3r1215]

I've got an EVGA GTX 460 running @ 1.000v 840/1680/1950 and I haven't crashed once yet. I'm trying to determine what's my highest in that voltage ballpark, but I don't know how long I should keep Kombustor running. [LOL Right at this point the system crashed, and I'm guessing it was because I was running Kombustor. Maybe that's telling me it should be longer than 2 minutes, lol!] Well now since it crashed...I bumped it up to 1.025 voltage and 830/1660/2000...how long is good enough in you guys' opinion? The temps don't go above 62-64C as I bought an 3rd party VGA cooler.

 

[raven117]

Run the benchmark, then i usually run for like 5 min. If it doesn't crash then its usually game ready.

 

[stryk3r1215]

Quote:

Originally Posted by raven117

Run the benchmark, then i usually run for like 5 min. If it doesn't crash then its usually game ready.

Should I have the 'Xtreme burn in' checked?

 

[Nvidia-Brownies]

Yes, if you are running it for a short period of time. It does a 100% GPU Load with Too many textures, to really stress out the GPU. I find it useful.

 

[stryk3r1215]

Quote:

Originally Posted by Nvidia-Brownies

Yes, if you are running it for a short period of time. It does a 100% GPU Load with Too many textures, to really stress out the GPU. I find it useful.

I noticed, the temps got higher than before

70C! Now trying 850/1700/2000 @ 1.050V and see how it goes...is 10 minutes on kombustor enough?

 

[Ovrclck]

Quote:

Originally Posted by stryk3r1215

I noticed, the temps got higher than before

70C! Now trying 850/1700/2000 @ 1.050V and see how it goes...is 10 minutes on kombustor enough?

It should be, you will know right away if it's not stable. The card is good for 105C, my old evga 460's ran 850 with ease. Good luck!

 

[jdmfish]

I'd say 15-20 minutes is usually good. Also run some benchmarks like Unigine Heaven with max settings/all settings enabled and highest resolution possible a few times regardless of the frame rates your getting.

You can also run OCCT, click on GPU, and run that at full screen resolution, with shader "3" and "error checking" enabled. If it's going to fail, it'll usually happen before 15 minutes.

 

[Gib007]

No matter how long you run it for, it doesn't mean a game will be stable. BF3 can crash that card right up!

Make sure you test in games, more so than Kombuster, Furmark, etc.

 

[john1016]

Quote:

No matter how long you run it for, it doesn't mean a game will be stable. BF3 can crash that card right up! smile.gif
Make sure you test in games, more so than Kombuster, Furmark, etc.

Ageed, my 6970 will pass stress tests no problem at much higher clock speeds, but once in BF3 it always locks up and I have to reset to stock OC.

 

[AoHxBram]

Quote:

Originally Posted by john1016

Quote:

No matter how long you run it for, it doesn't mean a game will be stable. BF3 can crash that card right up! smile.gif
Make sure you test in games, more so than Kombuster, Furmark, etc.

Ageed, my 6970 will pass stress tests no problem at much higher clock speeds, but once in BF3 it always locks up and I have to reset to stock OC.

try clocking the ram at just 1400, and put the core up high.
im running my cards at 1ghz and 1400mhz mem, on 1.3v (1.3 required for the 6990), And i have no problems at all.

For the furmark, yeha i ususaly run furmark to check if the temps are okey, after that i do some unigine heaven combined with Prime95 to test system load for 10-20 minutes, after that some gaming.

 

[afunyun]

15 minutes for me

also OCCT

 

[stryk3r1215]

Quote:

Originally Posted by Gib007

No matter how long you run it for, it doesn't mean a game will be stable. BF3 can crash that card right up!

Make sure you test in games, more so than Kombuster, Furmark, etc.

Yeah last night the whole pc crashed while playing BF3 for like 2+ hours. I don't know if it was my CPU OC unstable or if it was my gtx 460 that was unstable...

 

[stryk3r1215]

Quote:

Originally Posted by BGKris

Quote:

Originally Posted by stryk3r1215

I noticed, the temps got higher than before

70C! Now trying 850/1700/2000 @ 1.050V and see how it goes...is 10 minutes on kombustor enough?

It should be, you will know right away if it's not stable. The card is good for 105C, my old evga 460's ran 850 with ease. Good luck!

Good to know!

 

[Gib007]

Furmark and Kombustor are brilliant to see how high your temperatures go and if there are any immediate instabilities with your overclock. More important here is the temperature. No game will get your GPU temperature as high so this is a theoretical maximum (like Prime95 for a CPU). The Unigine Heaven is absolutely brilliant for testing an overclock stability - just leave it running windowed at maximum detail for ages. An hour or two without issues in Unigine Heaven is a very good indication of a stable overclock!

Regarding your system lock-up, I'd say it's more CPU overclock related although that just tends to pop up BSODs. It could indeed be an unstable GPU overclock or indeed a faulty graphics card. The former are more likely, though!

 

[stryk3r1215]

Quote:

Originally Posted by Gib007

Furmark and Kombustor are brilliant to see how high your temperatures go and if there are any immediate instabilities with your overclock. More important here is the temperature. No game will get your GPU temperature as high so this is a theoretical maximum (like Prime95 for a CPU). The Unigine Heaven is absolutely brilliant for testing an overclock stability - just leave it running windowed at maximum detail for ages. An hour or two without issues in Unigine Heaven is a very good indication of a stable overclock!

Regarding your system lock-up, I'd say it's more CPU overclock related although that just tends to pop up BSODs. It could indeed be an unstable GPU overclock or indeed a faulty graphics card. The former are more likely, though!

Thanks for the info! I got my gtx460 at ~80C under kombustor with 850/1700/2100 @ V1.062. Are those bad temps?

Do you think I should try to do one at a time? What I mean by that is, try overclocking the gpu with stock cpu voltage and speeds until I find a gpu OC I'm comfortable with? And after I do, could OC'ing the cpu have an effect on the GPU OC?

 

[Accuracy158]

I'm running two EVGA GTX 460 at 865/1730 1.025v (mem 2150). The top card is an SSC and the bottom is an external exhaust SC. I would think you could crank your cards up further... for me it come down to how much fan noise you want to use. My personal fan profile is set to 30% at 30c to 80% at 80c and then 100% at 84c. My temps don't usually go above 70c when gaming and I'm using stock cooling.

 

[Accuracy158]

I would use afterburner to display the actual gaming gaming temp... as others have stated the cards can get pretty hot and gaming temps aren't anywhere near as high as Kombuster/furmark. I personally don't ever want to see my cards go above 80c while gaming though that is still considered quite safe (max temp being around 100-105c). Like I said I get around 70c but i'm using a little less power and stock coolers so it's hard to compare. (The EE card is on the bottom and it still runs a little hotter than the regular)

What settings are you using for the fan profile?