which 7870

[Zubasa]

oh ok gotcha well i want to try play on 3 lcds

Then in that case just go for the 7970. You need all the performance you can afford.
Especially for BF3.

Edit: One thing of note.
http://www.amd.com/us/products/tech...nology/how-to/Pages/faqs.aspx#same-resolution
"While SLS mode does not require all monitors to be of the same resolution, SLS mode will force each monitor to match the smallest resolution on any of the displays you’re combining. For example, a 1680x1050 monitor paired with two 1920x1200 monitors will force the 1920x1200 monitors to 1680x1050 before they’re combined for a final SLS resolution of 5040x1050. For this reason, we do strongly encourage all monitors to have, at the very least, the same resolution."

 

[500]

Then in that case just go for the 7970. You need all the performance you can afford.
Especially for BF3.

Edit: One thing of note.
http://www.amd.com/us/products/tech...nology/how-to/Pages/faqs.aspx#same-resolution
"While SLS mode does not require all monitors to be of the same resolution, SLS mode will force each monitor to match the smallest resolution on any of the displays you’re combining. For example, a 1680x1050 monitor paired with two 1920x1200 monitors will force the 1920x1200 monitors to 1680x1050 before they’re combined for a final SLS resolution of 5040x1050. For this reason, we do strongly encourage all monitors to have, at the very least, the same resolution."

ok but which one? i dont want to spend more than 400$