Processor:  3.5GHz 6-Core
Intel Xeon E5 with 12MB L3 cache and Turbo Boost up to 3.9GHz.
Configurable to 3.0GHz 8-core processor with 25MB L3 cache or 2.7GHz 12-core processor with 30MB L3 cache
Memory: 
16GB (four 4GB) of 1866MHz DDR3 ECC memory
Configurable to 32GB (four 8GB) or 64GB (four 16GB)
Graphics:​​​​​​​
Dual AMD FirePro D500 graphics processors with 3GB of GDDR5 VRAM each
1526 stream processors
Configurable to dual AMD FirePro D700, each with 6GB of GDDR5 VRAM, 2048 stream processors, 384-bit-wide memory bus, 264GB/s memory bandwidth, and 3.5 teraflops performance
2.2 teraflops performance
240GB/s memory bandwidth
384-bit-wide memory bus