Biostar 8600 GTS 512 MB GDDR3 Video Card Review
 

Biostar is the first manufacturer to put 512 MB of fast GDDR3 memory on a GeForce 8600 GTS card, which usually comes with 256 MB. Since GDDR3 memory is expensive, the card retails for around $50 more than the regular variant. Are 256 MB additional video memory worth the price difference?

http://www.techpowerup.com/reviews/B.../8600GTS_GDDR3