If you want to work with SW and have good performance here is my $0.02:
CPU INTEL i7-920X Extreme Edition
One 250 - 7200 RPM GB HD (for OS and Software) (if you can afford both drives to be Solid State, change this for a 128 or 256GB SS HD).
One 256 GB Solid State HD por SW and SW files (this is much faster that the mechanical HD and more reliable)
At least 8 GB RAM
Be prepared to spend arround US$ 5,000 unless you get one at the Dell Outlet.
The M6500 is the best mobil workstation you can get at this time his performace is almost the same as a mid range desk top worksatation.
Be shure to get a base with a cooling fan... you will need it... this thing run hot. Aslo, never use it on a dirty (dust, pet hair, etc.) environment, if dirt reduces the heat trasfer on the CPU and Video Card, you will loose the workstation.
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