1 card for display, 1 for processing

[yourloginfailedthrowaway24]

Gonna sound silly because it is
I have a old Radeon X1050, GTX 660 and HP Z200 workstation.
I wanna put the 660 in the workstation, but the 660 doesn't fit in the 16x PCIe slot because the CPU heat sink is in the way
Could I have the 1050 in the 16x slot (connected to my monitors) and put the 660 in the 8x slot under it, and have the performance of the 660?
>inb4 how are you gonna power the 660 with the proprietary PSU
External power supply :^)

 

[pm4]

Why can't you connect monitor to that 660?

What kind of work have you in mind?
If its stuff like games I'm afraid it won't work as you wish.
Each monitor connected to PC registers as display in your setting and this display is associated to GPU it is connected to. So all stuff you will see on that monitor is processed by card it is connected to.

SLI/Crossfire setups are bit different but as you got 2 different brands it's not even relevant to your case.

If you want other card for some kind of GPU computation it should work as for that you don't need to display anything.

 

[yourloginfailedthrowaway24]

I tried using the 1050 in the 8x slot, but my second screen was a mirror of the primary screen and Windows didn't detect two monitors. I don't think I can use dual monitors from that slot
Guess I could put the primary monitor in the 660 and other one in the 1050?
Can't you select what graphics processor the application uses in the Nvidia Control Panel anyways