Please recommend motherboard & memory for this video card

Hi,
Could someone please recommend a motherboard & RAM (2GB) for this video card:

Radeon HD 4850 512MB
256-bit GDDR3
PCI Express 2.0 x16 HDCP Ready

Interface PCI Express 2.0 x16
Chipset ATI
GPU Radeon HD 4850
Core clock 650MHz
Stream Processors 800 Stream Processing Units
Memory Clock 2000MHz
Memory Size 512MB
Memory Interface 256-bit
Memory Type GDDR3
3D API
DirectX DirectX 10.1
OpenGL OpenGL 2.1
RAMDAC 400 MHz
RoHS Compliant Yes
CrossFire Supported Yes
Cooler With Fan
Operating Systems Supported Windows Vista/XP/MCE
Power Connector 6 Pin
HDCP Ready Yes
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161244

I have the Antec Sonata case:
http://data.diafysal.net/case_mod/sonata2.jpg

I have not put a PC together in a very long time. And do not want a performance bottleneck by choosing a "weak link component"

thanks!