Follow the link..

http://www.brightsideofnews.com/news...itectures.aspx


so here's a glimpse of 7970:

*2048 cores operate at 1GHz core clock
*3GB of GDDR5 memory operates in Quad Data Rate mode
* 240 GB/s of memory bandwidth compared to 192.4 GB/s of GTX580

COST--- 450$
Arrival---January