Radeon HD 4670 and Radeon HD 3870 Mac Edition - video card comparison
Radeon HD 4670
Radeon HD 3870 Mac Edition
Architecture
TeraScale (2005−2013)
TeraScale (2005−2013)
GPU code name
RV730
RV670
Market segment
Desktop
Desktop
Release date
September 2008
June 2008
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
1x 6-pin
Core clock speed
750 MHz
777 MHz
Floating-point performance
480.0 gflops
497.3 gflops
Manufacturing process technology
55 nm
55 nm
Number of transistors
514 million
666 million
Pipelines / CUDA cores
320
320
Power consumption (TDP)
59 Watt
106 Watt
Texture fill rate
24.00
12.43
Memory type
GDDR3
GDDR4
Maximum RAM amount
512 MB
512 MB
Memory bus width
128 Bit
256 Bit
Memory clock speed
2000 MHz
2252 MHz
Memory bandwidth
32 GB/s
72.06 GB/s
Display Connectors
2x DVI, 1x S-Video
2x DVI, 1x S-Video
DirectX
10.1 (10_1)
10.1 (10_1)
OpenCL
1.1
N/A
OpenGL
3.3
3.3
Shader Model
4.1
4.1
Vulkan
N/A
N/A