Hi,

Since my 5870 can't work with my old motherboard I tried it on my main computer. The goal was to see how that work and to give me time to decide if i will set a mining config with wich components inside it...

I added the 5870 as secondary videocard, to keep the GTX 470 as primary card.
But I'm surprised, the 5870 stuck in 274/276 Mhash when I though it was 300 to 313 by default (Without O/C or anything) ?

It is due to the configuration used? Or to the mining software choosen (GuiMiner with phoenix) ? I don't use Java actually so I can't try diablo miner but not sure it would change something?

I tried to play some games while mining but the Mhash is dropping to 200/220 Mhash. I think it's probably normal despite the games are only using the GTX 470..?

I also tried to set a miner for the GTX 470 but that was very hot, the fan quickly run at max in few seconds with a very scaring noisy sound so I immeditaly stopped the experiment, I though the GTX was to get an ugly heart attack!

Since that try I'm not sure how people can run a SLI of GTX cards?? Neither about a crossfire even if it's probably easier ? I though about setting a computer with crossfire but no longer sure about it?

Can I expect problems running two cards that are not compatible together?

Thanks for your answers

(Oops sorry seems i wrote the message in the wrong board section by error, i had a hornet playing close to me and didn't get attention to that)