ambam :
I've got a Core i7 930 and an X58 motherboard. I could have waited for the SB, but it's the 8-core SB and socket 2011 I'm waiting for, and I didn't feel like waiting 1 1/2 years. I was curious how much faster the Core i7 "Sandy Bridge" processor is over the old "Nehalem." I heard the notebook SB actually outperforms the desktop Core i7 980X.
When are the 8-core SB processors and the socket 2011 motherboards coming out? How about AMD's 8-core bulldozers?
your 930 is a good choice if you needed a pc that time, no reason for upgrading to sandy bridge if you already have i7 930, sandy bridge is faster but not better.
speed is just one of the many factorS to consider, and sandy bridge wins in that category, but it has many flaws, like less pcie lanes,
less memory support, no 6core support, the i7 9xx series are older but wins in that category, sandy bridge will outrun your i7930, but when heavily threaded apps that require more memory, your i7930 has more memory support so it will be more stable in running that app. if you will be buying a pc right now i think sandy bridge is a great choice, but if you will be buying a little late this year, better wait for the next gen i7.