Radeon HD4850 HD4870 (RV770) Specifications

Radeon HD4850 HD4870 (RV770) Specifications

(image from pcper.com)

	RV770XT	RV770PRO	RV770PRO
Product Name	HD4870	HD4850	HD 4850 GDDR3
Process	55 nm	55 nm	55 nm
Core Clock	850 MHz	650 MHz	650 MHz
Shader Clock	1050 MHz	850 MHz	850 MHz
Memory Clock	1935 MHz	1728 MHz	1143 MHz
Stream Processors	480	480	480
TMUs	32	32	32
ROPs	16	16	16
FLOPs	1008 GFlops	816 GFlops	816 GFlops
Fill Rate	27.200 MT/s	20.800 MT/s	20.800 MT/s
Memory Bus Width	256-bit	256-bit	256-bit
Memory Size	1 GB	512 MB	256 MB 512 MB
Memory Type	GDDR5	GDDR5	GDDR3
Memory Bandwidth	123.8 GB/s	110.5 GB/s	73.2 GB/s
TDP	150W	110W	110W
MSPR	$349*	$269*	TBA
Release	May 2008	May 2008	TBA

*currency is in USD

Source: Hardware-Infos