While comparing the two CPU Intel core i7 950 and AMD Phenom x6 1090T, Intel renders well and fast while the price difference between two processor is Rs.500 see here the benchmarks Bench - CPU - AnandTech :: Your Source for Hardware Analysis and News
Ya, that's true, i7 950 is better but when you are going for a competitive motherboard, you have to spend 10k to just get a good X58 motherboard and another 4k to 5k for having an advance level motherboard with features like SATA 3, USB 3.
But in case of AMD, just spending 6k you can get an advance feature rich motherboard with all the goodies fully loaded. So you can spend than extra money to build a fully balanced rig.
And the benchmark results, ya in the test environment of Guru3d or Toms hardware, they look very impressive, but in a normal scenario like yours or mine, that much performance difference for Core i7 can't be achieved. The performance difference, in most of the cases, in our setup will be just something in paper.