A quick look on Ebuyer and we have:
http://www.ebuyer.com/search?store=2&cat=215&subcat=3177
There's a list of GTX cards, Ebuyer is usually a good indicator of common retail prices though you'll no doubt find something cheaper if you shop around.
http://www.ebuyer.com/product/231359 That one's got a good performance/price ratio if you're still open to ATI of course
As for the extra money for the extra memory, depends on your justifiable budget, more video memory is always a plus
http://www.ebuyer.com/search?store=2&cat=215&subcat=3177
There's a list of GTX cards, Ebuyer is usually a good indicator of common retail prices though you'll no doubt find something cheaper if you shop around.
http://www.ebuyer.com/product/231359 That one's got a good performance/price ratio if you're still open to ATI of course
As for the extra money for the extra memory, depends on your justifiable budget, more video memory is always a plus