OpenCL question

Ok, I know it is early to be asking such questions BUT....

With Open CL, is it possible to install additional graphics cards with no monitors plugged in and utilize their processing power?

I recently flashed an evga 8800gt with the mac firmware, unfortunately before and after the flash the card does not run at 16x, it only works in a 8, 4 or 1x slot. If I get another 8800gt, flash it, and run both at 8x... perhaps I could benefit from having the spare card installed. I do enough video editing and encoding to want a lil more speed.

 

when I first got the card, before flashing, it would not run at all in my shuttle PC with one 16x pcie slot. The fans run full blast and there was no display. Same result with a computer at my office. Switching the office computer to sli mode (dropping the pcie to 8x) worked and allowed me to flash the card with the mac firmware. The card does have the larger rom size, verified before flashing. I have a mac pro 1,1. But that is irrelevant as the card was doing this before and after flashing the mac firmware, suggesting that it has a hardware issue, not firmware.

After putting the flashed card in my mac pros second slot (set to 1x) I used the expansion slot utility to set slot 1 & 2 to 8x and it works perfectly. This is why I am wondering if I can add an additional card running at 8x and gain power via opencl. If this does indeed work. I will probably keep this card and pick up another to flash and hopefully get it to run at 16 x. I am pretty sure the expansion slot utility had a setting for one 16x one 8x and two 1x slots.

I will be flashing the card with the latest evga firmware, testing again and flash back to mack to see if I can resurrect the cards ability to sync at 16x. (fingers crossed)