Re: High end workstations?
You'll be okay in terms of processing power, sure, but games aren't fully taking use of all cores yet (Crysis may change this).
But in terms of graphics performance, you will be behind.
I also use graphics packages, and to tell the truth, having a dedicated gaming card compared to a Quadro doesn't really harbour enough difference for me to even try, based on cost, etc.
If you want to game, you could also buy a gaming card, and put it into one of the slots, if you have SLI, but... its just how you'd switch between.
Abit IP35 Pro / Q6600 G0 / Zalman 9700 / 8800GTS 640mb / 4x 2GB Corsair XMS / X-FI Xtreme M / 1x 1TB / Antec 900 / Logitech Z-5500 / Samsung 20inch