need a cheap system to use with a free 7900gs

Hello all, I recently got my hands on a used 7900gs from a friend who got the 8800gtx. He was too lazy to sell his used videocard and just gave it to me. Now I am looking to build a temp system as cheaply as possible just to put this card to use. I would like to hear some opinions to see if these specs is good enough to not bottleneck this wicked videocard.

• AMD Athlon 64 X2 3600+ (65W) Dual-Core Socket AM2, 1.9GHz, 512KB x2 L2 Cache, 2000MHz HT, 65nm
• Crucial Rendition 1GB DDR2 667 (x2 for a total of 2GB)
• Foxconn 6100M2MA-RS2H Socket AM2 GeForce 6100 Chipset Dual Channel DDR2 533/667 Integrated nVidia Video Sound Lan SATA PCI-Express Graphics Slot Micro-ATX
• Some generic case with a generic PSU (400w+ perhaps) that will cost me

I Choose a motherboard with on-board video so I can possibily give the 7900gs to another gamer (who plays older games) when this cheapo systems becomes a websurfer/movie watcher.

Any and all comments welcome. Thanks for your time.

Edit: changed ram configeration to 2x 1gb

Here is a cost breakdown for this system so far (cdn $):

• CPU - $80
• MB - $70
• Ram - $90
• Case - $35
• Total - $275
  

the E2140 will cost me $100.

The cheapest mobo I found that supports this chip, uses ddr2 667, and has intergraded video is:
Asus P5L-MX Socket 775 Intel 945G + ICH7 Chipset Dual-Channel DDR2 533/667 Intergrated Intel Graphics Media Accelerator 950 5.1 Channel Intel High Definition Audio Gigabit Lan PCI-Express Graphics Slot Support Core 2 Duo Processor Micro-ATX

Which would cost me $90.

Is this extra $40 worth it to go for a E2140? or will the Athlon X2 3600+ be sufficient enough to utilize the 7900gs?

on a side note: will the cheapest 400W PSU be good enough for a 7900gs? I only have 1 HD and 1 DVD-rom if anything.