Quote from: joec0p on June 13, 2011, 08:58:37 AM

Quote from: stordoff on June 13, 2011, 06:12:25 AM

Quote from: xaxistech on June 13, 2011, 06:01:03 AM

You can only run 2 different cards if their in the same series, IE 5xxx or 6xxx
The problem is that every different series of card uses a different architecture, 40nm,50nm, ect and the drivers simply don't support 2 of those cards working together

Not true. My Windows 7 box is happily mining with a 4850 and a 5770.

What miner are you using?

I just started with two 5850's (non crossfire) and can only seem to get one recognized. The other sits idle. The motherboard I'm using does not support full crossfire and causes stuttering in gaming with xfire enabled...so I just disabled it thinking mining would work with both and I could still game on one. Using Phoenix on win7 x64.

Thanks!

Just using GuiMiner as it is easiest to configure, though I have used poclbm without issue.

Quote from: Morna

Most likely you need to use dummyplugs or Linux. Win 7 does not allow to use 3d-functions on separate ati series cards. To be able to expose the second (or third, fourth) card for the mining program u use, they need to be run in xfire, which you of course cant since they are ati 4xxx and 5xxxx.

It is definitely possible to use 4xxx and 5xxx series card together. I dropped in a 5770 next to my 4850 and both work fine (4850=75MHash/s, 5770=183MHash/s)

stordoff

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