Radeon HD 3850 and Radeon HD 4860 - video card comparison
Radeon HD 3850
Radeon HD 4860
Architecture
TeraScale (2005−2013)
TeraScale (2005−2013)
GPU code name
RV670
RV790
Market segment
Desktop
Desktop
Release date
November 2007
September 2009
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
2x 6-pin
Core clock speed
668 MHz
700 MHz
Floating-point performance
427.5 gflops
896.0 gflops
Manufacturing process technology
55 nm
55 nm
Number of transistors
666 million
959 million
Pipelines / CUDA cores
320
640
Power consumption (TDP)
75 Watt
130 Watt
Texture fill rate
10.69
22.40
Memory type
GDDR3
GDDR5
Maximum RAM amount
1 GB
512 MB
Memory bus width
256 Bit
256 Bit
Memory clock speed
1660 MHz
3000 MHz
Memory bandwidth
53.12 GB/s
96 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
1.1
OpenGL
3.3
3.3
Shader Model
4.1
4.1
Vulkan
N/A
N/A