The 2gb model is just a marketing gimmick. There are benchmarks here on Tom's showing little to no gains with a 2gb card vs a 1gb card.
Uh huh just been also doing the reading thing (SHOCK HORREUR) and seemingly just throwing RAM at something doesn't always make things faster (SHICK HORREUR x 2). Now tho I've found the MSI N275GTX Lightning ... and now I'm thinking... hmm... apres Christmas, no films... less obvious that the box arriving is actually for me... other half not angry... RESULT... Now STOCK is the issue...!!