Hi !
I have a big problem and I can't solve it so I need your help

!
I just bought a HIS x850pro VIVO AGP video card but I have the same 3dmark05 scores that with my old 9800pro.
My config :
- P4 3ghz
- Asus P4C800 last bios
- 1 gb DDR400 dual-channel
- Enermax power supply
0. Load bios default
1. I formatted the hard-drive
2. Fresh install of win xp
3. Drivers installation (last drivers for the chipset + catalyst 5.10)
My 3dmark05 score is around 3000.
I have changed all the components without success.
If I put the x850pro on an older pc wih agp8, athlon 1600mhz, same DDR400 DC, same harddrive, same power-supply I got a better score like 4500.
I really don't know why it's so slow on my P4. Do you have any idea ?
Thanks you for your help and sorry for my bad english...