Some real words about sandy bridge: 2 cores proccessors: · There won't be any performance improvement in the cpu. Same 32 nm technology. The best 2620 i7 (2.7 ghz) will be slower than the current i7 640m (2.8ghz) but faster than 620m (2.66 ghz) obviously · A big improvement in the gpu as it is fully redesigned, more graphic cores - more power. HD Graphics 3000 scores 5421 point in 3dmark 06, more than nvidia 320m that scores 4769 but less than 330m gt that scores 6127 · Still 35 watts so they are likely to be introduce in macbook pros. 4 cores proccessors: · Huge performance improvements. It goes from 45nm to 32nm, but instead of focusing in power saving they have maintained the tdp in all the line from 45w to 55w as in the previous generation, what means that SB has a lot more of transistors and obviously a lot more of power. · The worse sandy bridge quad core proccesor, 2630qm makes 4840 marks while the best of the previos line 940xm makes 4179!! That's amazing, but that make's me think that why don't they make a 32nm proccessor that performs like the 940xm but with 35watts?? The step between two cores and four cores is now ridiculously big!! · The best quad core proccessor 2920xm makes 5944!! More than desktop calss i7 975 that makes 5837. All this information comes from this list: http://www.notebookcheck.net/Mobile-Processors-Benchmarklist.2436.0.html So.. I think that intel has lost a big opportunity to make 35 watts quad core proccesors with similar performance as arrendale to fit in laptops like macbooks and other good battery performers. So don't expect: 1.- quad core macbook pros. ---- DUE TO THE NEXT LINK WE STILL HAVE A CHANCE TO SEE QUAD CORE SANDY BRIDGES IN A MACBOOK PRO: http://www.anandtech.com/show/4084/intels-sandy-bridge-upheaval-in-the-mobile-landscape/9 2.- performance gain in two cores. Expect: 1.- Big performance increase in integrated graphics.