Hi there. Need recommendation here for my frenz.

amd x2 , 15'1 screen, minimum 512RAM DDR2, minimum 80GB memory, shared GC card will do

*added
any brand will do.....
budget: as lower as possible

and my frenz thinking to upgrade to 2gb ram so the shared ram can goes higher, he is a gamer....

Like tplcaik said, from specs... The 5920 has better graphics (even though underclocked, still quite faster then the S41), but nobody knows if the thermal management (the vents and fans) are better then in current Acers... Plus there's the issue with the build quality, nobody knows how well it's built yet...

The S41 should have good thermal management (like the previous model), and a faster processor, but the GPU is a bit crappier then the Gemstone...

So, your call... Both are not really out yet so nobody really knows which one is better...