The new SAPPHIRE HD 4850 1GB is a new version of the HD 4850 designed by SAPPHIRE for the user who demands more memory for specific applications like rendering. It offers similar overall performance to the standard model, with clock speeds of 625MHz (core) and 993MHz (memory).
Specification:
GDDR3 memory 256-bit memory interface
DirectX® 10.1
24x custom filter anti-aliasing (CFAA) and high performance anisotropic filtering
ATI CrossFireX™ multi-GPU support for highly scalable performance
Use up to four discrete cards with an AMD 790FX based motherboard
PCI Express® 2.0 support
Dynamic geometry acceleration
Game physics processing capability
ATI Avivo™HD video and display technologyUnified Video Decoder 2 (UVD) for Blu-ray™ and HD VideoBuilt-in HDMI with 7.1 surround sound supportOn-chip HDCP
ATI PowerPlay™ technology