Radeon HD 3870 and Radeon HD 2600 XT - video card comparison
Passmark - benchmark score Radeon HD 3870 vs Radeon HD 2600 XT
Radeon HD 3870
572
Radeon HD 2600 XT
290
Radeon HD 3870
Radeon HD 2600 XT
Architecture
TeraScale (2005−2013)
TeraScale (2005−2013)
GPU code name
RV670
RV630
Market segment
Desktop
Desktop
Release date
November 2007
June 2007
Interface
PCIe 2.0 x16
PCIe 1.0 x16
Supplementary power connectors
1x 6-pin
None
Core clock speed
777 MHz
800 MHz
Floating-point performance
497.3 gflops
192 gflops
Manufacturing process technology
55 nm
65 nm
Number of transistors
666 million
390 million
Pipelines / CUDA cores
320
120
Power consumption (TDP)
106 Watt
45 Watt
Texture fill rate
12.43
6.400
Memory type
GDDR4
GDDR3
Maximum RAM amount
512 MB
256 MB
Memory bus width
256 Bit
128 Bit
Memory clock speed
2252 MHz
1400 MHz
Memory bandwidth
72.06 GB/s
22.4 GB/s
Display Connectors
2x DVI, 1x S-Video
2x DVI, 1x S-Video
DirectX
10.1 (10_1)
10.0 (10_0)
OpenCL
N/A
N/A
OpenGL
3.3
3.3
Shader Model
4.1
4.0
Vulkan
N/A
N/A