SLI performance question

[arfur]

I have a I7 920 running at 3.5GHz (WC), 12GB 16000 memory, Gigabyte X58 board, 60GB OCZ SSD, MSI 470GTX card.

While playing Badcompany2 which is all I'm playing at the moment the VGA usage flatlines at 98%, CPU about 60% on 1 core and I get 60-90FPS.

I got another 470GTX at the weekend which is identical, now when I play the game the FPS doesnt seem to be any better but the cards are now running at about 50% each and CPU remains the same.

I've tried several drivers, reinstalled the game and ensured sli is enabled (afterburner is showing both cards working throughout game), but sometimes its over 150FPS, very wierd, any advise?

 

[arfur]

Im running an i7 @4ghz with sli 470's at 750 mhz core, my fps does show as over 150 at times when playing online, ive only ever benched a section of the single player portion of the game, results below.

Frames, Time (ms), Min, Max, Avg
32200, 285318, 51, 158, 112.857

Gpu usage shows at 49%- 98%, 800mb ono memory usage, iirc on the above run my settings were all on high, 1920x1200, 4 x aa, 16 x af.

any idea what you were getting on a single card?

 

[arfur]

Single stock speed gtx 470, 2 mins using fraps.

Frames, Time (ms), Min, Max, Avg
9127, 120000, 55, 106, 76.058

Sli stock speed.

15101, 120000, 79, 165, 125.842
Frames, Time (ms), Min, Max, Avg

All ran at 1920x1200, highest settings, 8 x aa, 16 x af

I'll give it a test, out of curiosity what map where you testing it on? I've noticed a massive drop with the snowy maps in BC2. I'm also thinking PSU, its a crappy upgrade but it is only a 700w PCZ, looking at 900-1kw I think. But as the cards are now working at 50% less I was expecting a bigger increase, maybe BF3 will fix that

 

[arfur]

Post above edited for sli results

@M1k3H, in the afterburner settings/monitoring menu, does it not allow you to select mem/gpu usage in the on screen display?

I use a G15 keyboard which shows all the stats on the LCD while running.

I also ran the counter strike source benchmark and the results were the same for 1 card or 2, but the work on each card was only 50% each.

 

[arfur]

Gpu usage for me is usually between 49 - 98%.

G15 here as well.

is that per card or total?

respect

 

[arfur]

I've just spent the last 2 hrs testing various combinations and I cannot figure it out. my avg FPS on the boat demo is between 118 & 123 regardless if its on 1 card or 2, but afterburner shows gpu usage on both cards >59% if both cards are enabled. I disabled 1 card and removed the ribbon, re-run a quicker benchmark and the results came in the same as when I had 2 cards (tessmark). very wierd

however my single card with 1x / 16x 1920x1200 h/h/h/hbo def cpu got 120fps my mate who has same board and cpu @ 3.6ghz OC and a 570GTX only gets avg of 109FPS (ROFLMAO).

so even though its crap its better than his 570gtx

 

[arfur]

dx 11 / disabled/high/disabled/1x/off/fs/1920x120 - run 1 =FAIL wont run with/without SLI, is erroring.

 

[arfur]

http://ow.ly/i/7Izs
reinstalled driver and rebooted, also emailed ASUS for advice