Hardware museum

	Reference RV770 Board	Sapphire Radeon HD 4850
GPU type	RV770	RV770
Manufacturing process	55 nm	55 nm
Transistors	956 million	956 million
Die size	256 mm²	256 mm²
ROPs	16	16
TMUs	40	40
PS / VS \| Unified Shaders	- / - \| 800	- / - \| 800
GPU clock	750 MHz	625 MHz (0.83×)
Pixel / texel fillrate	12 000 MP/s ; 30 000 MT/s	10 000 MP/s (0.83×) ; 25 000 MT/s (0.83×)
SP / DP gigaflops	1 200 ; 240	1 000 ; 200 (0.83×)
DirectX / OpenGL	10.1 ; 3.3	10.1 ; 3.3
CUDA / OpenCL	- ; 1.0	- ; 1.0
Memory	1 024 MB GDDR5	512 MB (512×) GDDR3
Memory	3 600 MHz ; 256 bit	2 000 MHz (0.67×) ; 256 bit
Bandwith	115 200 MB/s	64 000 MB/s (0.56×)
Interface	PCI-E 2.0 x16 [8 192 MB/s]	PCI-E 2.0 x16 [8 192 MB/s]
TDP	150 W	110 W (0.73 ×)
Analog I/O ports	1 × S-Video out, 2 × DVI-I	1 × S-Video out, 2 × DVI-I
Digital I/O ports	2 × DVI-I	2 × DVI-I
Independent screens	2	2
Introduce date	2008	2008