Latest drivers (NVidia and ATI)

[Jason G]

Interesting, with the 268.63 beta driver I'm seeing a change in the stable overclock (a tad higher than before) and now it seems to prefer 3 tasks at a time with the x32f app (instead of 2 before).

[Ghost0210]

Interesting, with the 268.63 beta driver I'm seeing a change in the stable overclock (a tad higher than before) and now it seems to prefer 3 tasks at a time with the x32f app (instead of 2 before).

looks promising to start seeing Fermi coming into it's own then and delivering on its expectations

[SciManStev]

I have been using this driver for a couple of days now. Crunching it seems fine. It did start a regular USB tick to my steering wheel. I have a force feedback steering wheel, and about every second one of the LED's flickers. When I had the power connected, it pulsed the motor CCW. I may be able to track down a cause later, but for now with the PSU unplugged, it's not a problem. I have noticed my GPU's are running a little bit hotter. Instead of 42 to 45C, they are running 46 to 48C. I am running two tasks each, so I will try for 3 and see what happens. Clock speeds are still at 840 MHz.

Steve

[SciManStev]

I just installed the latest Logitec driver and software, and the tick went away. I am now crunching with 3 wu's per 480 and so far everythibng is stable.

Steve

[Ghost0210]

have just checked my GPU usage after changing to the 260.63 drivers - seems I'm only getting about 60% usage running 2 tasks at a time
Have just changed to 3 at a time - hitting 95% now using the x32f build and times seem to be about the same as running 2 at a time

[SciManStev]

have just checked my GPU usage after changing to the 260.63 drivers - seems I'm only getting about 60% usage running 2 tasks at a time
Have just changed to 3 at a time - hitting 95% now using the x32f build and times seem to be about the same as running 2 at a time

I agree with everything Ghost said. I am getting the exact same thing. No reall difference in time from 2 to 3 units, and utilization is the same as Ghost indicatred.

Steve

[Jason G]

Going to have to start thinking about water cooling this 480 

[Raistmer]

have just checked my GPU usage after changing to the 260.63 drivers - seems I'm only getting about 60% usage running 2 tasks at a time
Have just changed to 3 at a time - hitting 95% now using the x32f build and times seem to be about the same as running 2 at a time

Do you accounting for GPU idle startup time in some way?
This delay can be hided by running few tasks per GPU and the more tasks running simultaneously the better (until no performance degradation in GPU part per se).

[Ghost0210]

Do you accounting for GPU idle startup time in some way?
This delay can be hided by running few tasks per GPU and the more tasks running simultaneously the better (until no performance degradation in GPU part per se).

Hadn't thought of that
running two tasks at a time the startup time is ~20 seconds - will have to chek what the start up time with 3 at a time is when I get back home

[Questor]

What are you all using to show GPU utilization? I use EVGAPrecison which with one task running per GPU shows about 92% utiization and with 2 shows 99%. 3 still shows shows  99%.

I am running WindowsXP64. I had seen suggested that the XP driver model doesnt allow the GPU to properly multitask. I assume you are all running Vista/Win7.

Am I finally going to have reluctantly ditch XP ......


John.
PS Have just installed the 260.63 drivers before getting these results but about the same on the previous 258.96.

[Ghost0210]

I use a combination of EVGAPrecision and GPU-Z depending on what i am doing, I'm using Win7x64 and getting around 96% utilisation running 3 tasks

[arkayn]

On my 460 I am seeing about 90% utilization running one task, I am also on XP Pro/64.

[SciManStev]

I am using MSI afterburner to monitor GPU usage. My times to reload a wu while running 3 wu per card is 12 seconds. I seem to have dropped to about 80% utilization running 3 wu's, but the times are imostly 22 minutes with a few going over 30.  My usage was up near 99%, so I don't know why it dropped off. My GPU core voltage was at 1.038V stock, and I am now running at 1.063 Volts.

PS. Does any body else have a hard time typing with a cat crawling all over you and the keyboard?

Steve

[SciManStev]

I kicked it up a notch. 845 MHz. I like this driver.

Steve

[Questor]

I had MSI afterburner installed also and it read the same as EVGAPrecison but the big display is a bit easier to read.

On 260.63 machine with 1 task on the GPU the utilisation varies between say 86 to 95 (mostly around the 90% mark)
With 2 tasks pretty much flatline at 98/99%

On 258.96 machine with 1 task on the GPU the utilisation varies between about 90 to 97 (mostly around 95% mark)
With 2 tasks pretty much flatline at 98/99%

I think I've a licence for Vista somewhere - I'll install that and see how it compares when I get a chance.

Need to get some proper timings first. Unfortunately as I switched between 1 and 2 tasks it chose different tasks to run so difficult to compare.


John.