Which graphic card for scrypt mining hd7950, r290, r280x

[kristofabc]

Hello,
I am thinking of converting my old pcu into mining rig (very small ofcourse). I have a p5n-e sli motherboard 2 pcie slots, 550w psu,e6400, well ventilated case.
Currently I have one offer for graphic card PowerColor R9 290 4GB at 350eur , sapphire hd7950 at  240 eur or r9 280x gigabyte at 290e (european prices..).. Which would be better "bang for the buck" from the perspective khash/watt?
I'll be probably mining just vertcoin

Thanks!

[1714038084]

1714038084

[mac-coin]

Hi

You'll be on the limit of your psu if you go for the r9 290 and maybe even the r9 280x,  Been your first rig, I'd go for the 7950

[DrReaper]

Get a EVGA 1000Watt PSU and a R9 290 4GB. I purchased the Sapphire video card. How are you with computers? It takes some know how to make this all work? You should try mining a CPU coin to get started. It will give you an idea of what your getting into. Try primecoin it's still easy to mine in a pool.
Try ypool.com

[kristofabc]

Thanks for the answers, I actually got hd7950 because I didn't want to change PSU. Ran the system for 2 hours at 400W (550w rated psu from lc), and burned the psu..... Then I got a new psu
Yeah should have gotten a r290 and new psu ... but hey what can I do