Architecture
ATI VLIW5 TeraScale 55nm
Most Powerful Variant
RV670 XT
Cores : TMUs : ROPs
320 : 16 : 16
Typical Memory Size
512 MB
Typical Memory Bus
256 -bit
RV670 GPU
Overview
Manufacturer
AMD
Release Date
November 19th, 2007
Graphics Processing Unit
Architecture
ATI VLIW5 TeraScale
Fabrication Process
55 nm
Die Size
192 mm2
Transistors Count
666M
Stream Cores
320
TMUs
16
ROPs
16
Clocks
Base Clock
777 MHz
Memory Configuration
Memory Size
512 MB
Memory Type
GDDR4
Memory Bus Width
256-bit
Memory Bandwidth
72.1 GB/s
Performance
Pixel Fillrate
12.4 GPixels/s
Texture Fillrate
12.4 GTexel/s
SPFP Performance
497.3 GFLOPS
Performance per W
4.7 GFLOPS/W
Performance per mm2
2.6 GFLOPS/mm2
Physical
Interface
PCI-Express 2.0 x16
Typical Thermal Design Power
106 W
CrossFire Support
4-way
API Support
DirectX
10.1
Vulkan
-
OpenGL
3.3
OpenCL
1.2
| Model | GPU Model | Unified Cores | Memory Clock | Memory Config. | |
|---|---|---|---|---|---|
 | ATI Radeon HD 3870 X2 | RV670 | |||
 | ATI Radeon HD 3870 | RV670 XT | |||
 | ATI Radeon HD 3850 | RV670 PRO | |||
| | ATI Radeon HD 3690 | RV670 PRO | |||
| | ATI Radeon HD 3830 | RV670 PRO |