Hey guys if anyone can help me my question is

I have a gpu radeon hd 5750 saphire vapor-x edition. Its a 1gb gddr5 card.

By luck i was searching on ebay and i found a radeon hd 5770 saphire vapor-x edition. Also a 1gb gddr5 and i bought it.

Is it possible to crossfire these 2 cards together keeping in mind that one is 5750 and the other is 5770???

Thanks for any help.
Yes you can Xfire an HD 5750 with a 5770, keep in mind that if you Xfire them the 5770 will downclock itself to match the 5750.
Think of it as lowest common denominator.
Sell your card + the money for the other card and buy a single faster GPU.
i dont mind if it downclock to 5750 ill just overlock them a bit.. is that possible ?

I already paid for the 2nd card already and i paid 40 $ including shipping which im sure u will find a great deal..

so i wont be able to sell them both for around 200 $ and a decent one at least will cost me 200 bucks.
Yeah, that's a good deal. Make sure your PSU is at least 700W by the way.
in this case i need to buy a psu, any good deals ?