Video Card for my new workstation - FireGL V3600 vs. FireGL 3400

I was just wondering what peoples opinions were on these 2video cards.

The first is the ATI FireGL V3600 256MB 128-bit GDDR2 PCI Expressx16.
http://www.newegg.com/Product/...?Item=N82E16814195048

The second is the ATI FireGL V3400 128MB 256-bit GDDR3 PCI Expressx16.
http://www.newegg.com/Product/...?Item=N82E16814195011

Does anyone know how much of a difference having 128MB GDDR3 Memoryopposed to the 256MB GDDR2? There is a 50 dollar price differenceso I wanted to see if anyone could shed some light on this.

ThanksSolidworksAdministration