Hello everyone, I am planning to buy a Sapphire Radeon HD 7970 3GB DDR5 card, but I see different part numbers and UI designs and am confused. The AMD website displays the following at different prices: Part# 100351VXSR - $449.99 + shipping
Part# 11197-01-40G - $379.99 + shipping
Part# 21197-00-40G - $409.99 + shipping
Part# 100351SR - $419.99 + shipping
Part# 11197-03-40G - $425.99 + shipping
Part# 11197-12-40G - $469.99 + shipping
What is the basic difference between all of them. My config: Intel DX58SO MB, 6 GB Corsair Dominator tripple channel ram, Cooler Master 650 W power supply, Sapphire Radeon 5750 1 GB DDR5 card. Please help me decide on what to purchase.