Nvidia geforce 9600GSO on PCI-E- 1.0

I’m using geforce 8400GS. Now i want to upgrade video card. I want to buy XFX geforce 9600GSO 768 mb. My question is this card run at full speed in pci-e- 1.0?

My configuration…

  1. Pentium D 915 2.8 ghz CPU
  2. MSI G965M mainboard
  3. 2 GB ddr2-667 transcend
  4. 400 watt PSU
  5. 250gb samsung hdd
  6. Windows xp service pack 3

It shouldn’t be an issue.