iXBT Labs - AMD(ATI) RADEON R(V)7XX Reference - Page 1: R(V)7XX GPU, RADEON HD 4800 series specs

<< Previous page

Other AMD(ATI) GPU references

Code name	RV770	RV730	RV710	RV790	RV740
Baseline review	Here	Here		Here	Here
Process technology, nm	55				40
Transistors, M	956	514	242	959	826
Unified processors	160*5	64*5	16*5	160*5	128*5
Texture units	40	32	8	40	32
Blending units	16	8	4	16	16
Memory bus	256	128	64	256	128
Memory types	DDR, DDR2, GDDR3, GDDR4, GDDR5
System bus	PCI-Express 2.0 16x
RAMDAC	2 x 400MHz
Interfaces	TV-Out TV-In (video capture chip required) 2 x Dual Link DVI HDMI DisplayPort
Vertex shaders	4.1
Pixel shaders	4.1
Pixel precision	FP32/FP64
Vertex precision	FP32/FP64
Texture component formats	FP32, FP16 I8 DXTC, S3TC 3Dc
Rendering formats	FP32 and FP16 I8 I10 (RGBA 10:10:10:2) etc.
MRT	Yes
Antialiasing	2x-8x MSAA CFAA 24x
Z generation	2x in Z-only mode

Codename: RV770
Process technology: 55nm
956 million transistors
Unified architecture with an array of common processors for streaming processing of vertices and pixels, as well as other data
Hardware support for DirectX 10.1, including new Shader Model 4.1, geometry generation, and stream output
256-bit memory bus: Four 64-bit controllers supporting GDDR3/GDDR5
Core clock: 625-750 MHz
10 SIMD cores, including 800 scalar floating-point ALUs (integer and floating-point formats, support for FP32 and FP64 in compliance with IEEE 754)
10 enlarged texture units supporting FP16 and FP32 formats
40 texture address units
160 texture fetch units
40 bilinear filtering units that can filter FP16 textures at full speed, trilinear and anisotropic filtering for all texture formats
Dynamic branching in pixel and vertex shaders
16 ROPs supporting antialiasing with programmable sample patterns (over 16 samples per pixel), including FP16 or FP32 formats of the frame buffer. Peak performance is up to 16 samples per cycle (including MSAA 2x/4x and FP16 buffers), 64 samples per cycle in Z only mode
Writing results up to eight frame buffers simultaneously (MRT)
Integrated support for two RAMDACs, two Dual Link DVIs, HDMI, HDTV, DisplayPort