Would a Radeon HD 6850 video card support a Dell Inc. 0NWWY0 (CPU 1) mother drive?

I have done some research for my computer and this video card, but I am still not a 100% sure it will work before buying.

Video Card info:

ASUS EAH6850 DC/2DIS/1GD5/V2 Radeon HD 6850 1GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card with Eyefinity.



Computer Info:

Operating System

MS Windows 7 Home Premium 64-bit

CPU

AMD Phenom II X6 1045T 34 °C

Thuban 45nm Technology

RAM

8.00 GB Dual-Channel DDR3 @ 666MHz (9-9-9-24)

Motherboard

Dell Inc. 0NWWY0 (CPU 1) 37 °C

Graphics

DELL IN2020M (1600x900@60Hz)

ATI Radeon HD 5450

Hard Drives

977GB Seagate ST310005 28AS SATA Disk Device (SATA) 35 °C

Optical Drives

HL-DT-ST DVD+-RW GH50N SATA CdRom Device

Audio

Realtek High Definition Audio|||As long as you have a 500w or larger power supply, the 6850 will work.