Re-purposing old computers for Folding

[spleenbegone]

My boss has agreed to let me set up all of our old computers in a spare room with F@H running on them. They're all P4 level processors, so not much use really on that part, but I've managed to get 5 working with PCI-e slots, and I'm hoping to spend a bit of my own money and fill them with some graphics cards.

The PSU's in them are far from the best, and none have 6 pin power connectors. I could probably get away with one adapter, but past that would be pushing it more than I care to. Since it's my own money, and I have a few to fill out, I'm looking to do it on the cheap, sub $100 per card. 50-75 is really what I'm shooting for. Does anyone have suggestions?

 

[smorizio]

My boss has agreed to let me set up all of our old computers in a spare room with F@H running on them. They're all P4 level processors, so not much use really on that part, but I've managed to get 5 working with PCI-e slots, and I'm hoping to spend a bit of my own money and fill them with some graphics cards.

The PSU's in them are far from the best, and none have 6 pin power connectors. I could probably get away with one adapter, but past that would be pushing it more than I care to. Since it's my own money, and I have a few to fill out, I'm looking to do it on the cheap, sub $100 per card. 50-75 is really what I'm shooting for. Does anyone have suggestions?

do you need the for video to post?? if so there are a lot of old good pci video cards out there that dont need power plugs.
http://www.microcenter.com/product/388316/Radeon_X1300_256MB_DDR2_PCIe_Video_Card_-_Refurbished
13.00
a faster and newer card
http://www.microcenter.com/product/354352/512-P3-1300-LR_NVIDIA_GeForce_8400GS_512MB_DDR3_PCIe_20_x16_Video_Card_512-P3-1300-LR
27.00
http://www.microcenter.com/product/363989/R5450-MD1GD3H-LP_AMD_Radeon_HD_5450_1024MB_DDR3_PCIe_20_x16_Video_Card
30.00
even faster and newer.

 

[spleenbegone]

I have to imagine those two amd cards don't offer very much, the 8400 might be a start though.