Thanks. I think because Dell and HP use 1700, I thoght that it should be better. But I know that I am wrong.
I found this site http://hothardware.com/Articles/MidRange-Workstation-GPU-Shootout/?page=8
Since I am going to use it for UG NX, V5600 will perfrom much more better than FX1700
Edit-> Some how dell workstation cant choose V5600. I only able to choose the V3 and V7 series....I wonder why...
I will investigate about V5700. Thanks for the info.