look there will be always some performance difference between AMD and INTEL
but IMO AMD beats the crap out of intel in Performance/price ratio
today u get i5 760 rig and tomorrow it will be obsolete
try to understand the point
u asked for sub 50k rig
and i just assembled a sub 45k rig which will be far more better than sub 45k intel rig
u saved 5k that can be used somewhere else that u can think of
It doesn't beat the crap actually in the higher mid range. I would say i5 760 is as future proof as 1055t. i5 760 is a great performer in most apps and performs very very close in heavily multithreaded apps. Its even superior to 1055t in clock per clock execution.
Op here should for i5 2400 sb processor at around the price of an i5 760 which is a
LOT future proof than all previous intel i5's and amd x6's.
Currently a 45k intel sandybridge rig is much more better than any amd rig that can fit in the budget.
Now most will point out that they will pair an athlon 2 x4 with a sub 4k 880mobo and add a fast card like 6870, 6970 or gtx570 or even a 6850cf. But i am highly against such config as the cpu will clearly be a huge bottleneck. In this scenario , spending a bit more and getting the midranged cpu's like previous gen i5's, amd x4's or x6's and current sb i5's(perfect choice) are highly recommended.
As things stand currently, amd will phase out its x6 processors and bulldozer(2-4) cores will be the sucessor and will compete with sandybridge cpu's. All of these qualify as good gaming cpu's but the latest architecture cpu's are more future proof.
So the conclusion is there should be a balance in performance between the cpu and gpu. A fast cpu + a weak gpu and vice versa is a bad choice.