Radeon HD 3870 X2 and Radeon HD 3850 - video card comparison
Passmark - benchmark score Radeon HD 3870 X2 vs Radeon HD 3850
Radeon HD 3870 X2
729
Radeon HD 3850
404
Radeon HD 3870 X2
Radeon HD 3850
Architecture
TeraScale (2005−2013)
TeraScale (2005−2013)
GPU code name
R680
RV670
Market segment
Desktop
Desktop
Release date
January 2008
November 2007
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin + 1x 8-pin
1x 6-pin
Core clock speed
825 MHz
668 MHz
Floating-point performance
2x 528.0 gflops
427.5 gflops
Manufacturing process technology
55 nm
55 nm
Number of transistors
666 million
666 million
Pipelines / CUDA cores
320
320
Power consumption (TDP)
165 Watt
75 Watt
Texture fill rate
13.20
10.69
Memory type
GDDR3
GDDR3
Maximum RAM amount
512 MB
1 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
1802 MHz
1660 MHz
Memory bandwidth
57.66 GB/s
53.12 GB/s
Display Connectors
2x DVI, 1x S-Video
2x DVI, 1x S-Video
DirectX
10.1 (10_1)
10.1 (10_1)
OpenCL
N/A
N/A
OpenGL
3.3
3.3
Shader Model
4.1
4.1
Vulkan
N/A
N/A