2GB/GDDR5/64-bit: Expertly designed by ASUS, with more performance than built-in solutions One-slot design: Fits in a small case, leaving room for additional expansion cards Super quite: Silent passive cooling is perfect for quite home theater PCs and multimedia centers. HDMI x4: Supports up to four high-definition displays for enhanced multitasking and productivity Easy to install: Plug and play - no cables from the power supply are needed