Quote from: Meatball on June 16, 2011, 05:41:23 PM

A lot of us have read that Windows has a 4 GPU limit and that Windows XP can't do 4 GPU's. Let's verify/dispel those myths.

Is there anyone out there that has more than 4 GPU's mining on a box running Windows OS?
Is there anyone that's been able to get 2, 3 or 4 cards mining using Windows XP?

Edit: If anyone can answer yes to either of those above, please list your hardware/software setup.

I'm running 3 x HD5870 on Windows XP with an Intel DX975XBX motherboard and an Intel E6400 with 1 GB DDR2. I'm using single resistor dummy plugs in cards 2 and 3 and all 3 cards are running at 950/300. I run 2 Phoenix instances on each GPU with identical settings, so I cover 2 pools in case one has problems. My total hash rate is just over 1,200 MH/s.

Not an XP/Windows problem, but to get around the heat issue, as the cards are so close together, I use insulating spacers to push the cards apart and I've cut holes in the case and fitted 2 fans that blow air directly onto the middle card.