Other AMD(ATI) GPU references
R(V)7XX GPU specifications
| Codename |
RV770 |
RV730 |
RV710 |
| Baseline review |
Here |
Here |
| Process technology, nm |
55 |
| Transistors, M |
956 |
514 |
242 |
| Unified processors |
160*5 |
64*5 |
16*5 |
| Texture units |
40 |
32 |
8 |
| Blending units |
16 |
8 |
4 |
| Memory bus |
256 |
128 |
64 |
| 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 DVI Dual Link
HDMI
DisplayPort |
| Vertex shaders |
4.1 |
| Pixel shaders |
4.1 |
| Precision of pixel calculations |
FP32/FP64 |
| Precision of vertex calculations |
FP32/FP64 |
| Texture component formats |
FP32, FP16
I8
DXTC, S3TC
3Dc |
| Rendering formats |
FP32 and FP16
I8
I10 (RGBA 10:10:10:2)
other |
| MRT |
Available |
| Antialiasing |
2x-8x MSAA
CFAA 24x |
| Z generation |
2x in Z-only mode |
R(V)7XX-based reference card specifications
| Graphics card |
GPU
Bus |
ALU/TMU |
Core clock (MHz) |
Memory frequency (MHz) |
Memory capacity (MB) |
Memory bandwidth (GB)
bit |
Texel rate (Mtex) |
Fill rate (Mpix) |
| RADEON HD 4550 |
RV710
PEG16x |
80/8 |
600 |
800(1600) |
256/512 DDR3 |
12.8
(64) |
4800 |
2400 |
| RADEON HD 4650 |
RV730
PEG16x |
320/32 |
600 |
500(1000) |
512 DDR2 |
16.0
(128) |
19200 |
4800 |
| RADEON HD 4670 |
RV730
PEG16x |
320/32 |
750 |
1000(2000) |
512 GDDR3 |
32.0
(128) |
24000 |
6000 |
| RADEON HD 4850 |
RV770
PEG16x |
800/40 |
625 |
1000(2000) |
512 GDDR3 |
64.0
(256) |
25000 |
10000 |
| RADEON HD 4870 |
RV770
PEG16x |
800/40 |
750 |
900(3600) |
512 GDDR5 |
115.0
(256) |
30000 |
12000 |
| RADEON HD 4850 X2 |
2xRV770
PEG16x |
2x(800/40) |
625 |
1000(2000) |
2x1024 GDDR3 |
2x64.0
(2x256) |
50000 |
20000 |
| RADEON HD 4870 X2 |
2xRV770
PEG16x |
2x(800/40) |
750 |
900(3600) |
2x1024 GDDR5 |
2x115.0
(2x256) |
60000 |
24000 |
Details of RV770, RADEON HD 4800 Series
- Codename: RV770
- Process technology: 55 nm
- 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
RADEON HD 4870 specifications
- Core clock: 750 MHz
- Unified processors: 800
- 40 texture units, 16 blending units
- Effective memory frequency: 3600 MHz (4*900 MHz)
- Memory type: GDDR5
- Memory: 512 MB
- Memory bandwidth: 115 GB/sec
- Maximum theoretical fillrate: 12.0 gigapixel per second
- Theoretical texture sampling rate: 30.0 gigatexel per second
- Two CrossFireX connectors
- PCI Express 2.0 x16
- 2 x DVI-I Dual Link, 2560x1600 video output
- TV-Out, HDTV-Out, support for HDCP, HDMI, DisplayPort
- Power consumption: up to 160 W (two 6-pin connectors)
- Two-slot design
- MSRP: $299
RADEON HD 4850 specifications
- Core clock: 625 MHz
- Unified processors: 800
- 40 texture units, 16 blending units
- Effective memory frequency: 2000 MHz (2*1000 MHz)
- Memory type: GDDR3
- Memory: 512 MB
- Memory bandwidth: 64 GB/sec
- Maximum theoretical fillrate: 10.0 gigapixel per second
- Theoretical texture sampling rate: 25.0 gigatexel per second.
- Two CrossFireX connectors
- PCI Express 2.0 x16
- 2 x DVI-I Dual Link, 2560x1600 video output
- TV-Out, HDTV-Out, support for HDCP, HDMI, DisplayPort
- Power consumption: up to 110 W (one 6-pin connector)
- Single-slot design
- MSRP: $199
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