Memory

• The GeForce 7900 GT comes with 256 MB of onboard memory and a memory bandwidth of 42.2 GB per second. The GeForce 7900 GTX video card comes with 512 MB of onboard memory and a memory bandwidth of 51.2 GB per second. Both cards have a 256-bit memory interface.
  
  

Rendering

• The GeForce 7900 GT has a fill rate of 10.8 billion pixels per second and can render 940 million vertices per second. The GeForce 7900 GTX has a fill rate of 15.6 billion pixels per second and can render 1.4 billion vertices every second. Both render 24 pixels per clock cycle (peak).
  
  

Slot

• The GeForce 7900 GT and 7900 GTX both fit the PCI Express slot.