Graphics card help.

[totallymon]

Hello,
I want this
Graphics card: http://www.amazon.com/SAPPHIRE-Radeon-6870-GDDR5-Graphics/dp/B005C8RTTU/ref=sr_1_1?ie=UTF8&qid=1330451050&sr=8-1

I have PCI-Express slot (1.0? i think.)
I believe my motherboard is: h-rs880-uatx (aloe).

I want to know if it will fit, and if i need PCI-E 2.0 or 2.1 to use it.

If it matters, i have an HP Pavillion p6270z

Thanks!

 

[totallymon]

thanks much! and i was going to upgrade my power supply to around 600w to use it.