Brand XFX 
Model HD-577A-ZNFC 
PCI Express 2.0 x16 
Chipset Manufacturer ATI 
GPU Radeon HD 5770 (Juniper XT) 
Core Clock 850MHz 
Stream Processors 800 Stream Processing Units 
Effective Memory Clock 1200MHz (4.8Gbps) 
Memory Size 1GB 
Memory Interface 128-bit 
Memory Type GDDR5 3D API 
DirectX 11 
Ports HDMI 1 x HDMI 
DisplayPort 1 x DisplayPort 
DVI 2 x DVI 
General RAMDAC 400 MHz 
Max Resolution 2560 x 1600 
CrossFireX Support Yes 
Cooler With Fan 
System Requirements Minimum 450 Watt Power Supply Requirement 
Power Connector 6 Pin 
Dual-Link DVI Supported Yes 
HDCP Ready Yes 
Card Dimensions 8.5" x 4.38" x 1.5" 
Features ATI Eyefinity Technology 
Package Contents HD-577A-ZNFC
Installation CD with Multi-Language User Guide
Quick Installation Guide
Driver CD Installation Guide
XFX Serial Number Door Hanger
6-pin to 4-pin power cable
DVI to VGA adapter 
Manufacturer Warranty 
Lifetime limited Labor