Is This Graphics Card Compatible With My Motherboard?

I am planning on building a computer. The motherboard I plan to use is the ASUS M4A79XTD EVO AM3 AMD 790X ATX AMD Motherboard. I also plan on getting the SAPPHIRE 100283L Radeon HD 5770 (Juniper XT) 1GB 128-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFireX Support Video Card. I am wondering if these two components are compatible with one another, because the memory type of the video card is GDDR5, while the standard memory for the motherboard is DDR3. If these components are not compatible, could you guys suggest a compatible video card? Thanks in advance!