If money really is no object, then you can get intel X7560 server chips (8 cores, 16 thread) and fit 8 of them into a single server.
This would give you 64 cors 128 threads and can support up to 2Tb of ram.
As for price you will have to ask the likes of HP for their Prolient DL980 G7 servers. But given the CPU's are over £3,000 @ $4,500 each, and each of the 128 16Gb DDR3 Rdimms cost £800 @ $1,200. I would say LOTS!!!
here is a benchmark for FPU: http://www.guru3d.com/article/phenom-ii-x6-1055t-1090t-...
core i7 980 is the best!!!with a noticeable difference.and amd 1055t is better than i7 870 and it shows for clock per clock amd is better here.also 1055t beat 930 but difference is not noticeable!!
anyway,if you want better cpu you can wait for bulldozer which each core of it has two fpu 128bit and it has 8 core.