Radeon HD 4870 and Radeon HD 4770 - video card comparison
Passmark - benchmark score Radeon HD 4870 vs Radeon HD 4770
Radeon HD 4870
1411
Radeon HD 4770
935
Radeon HD 4870
Radeon HD 4770
Architecture
TeraScale (2005−2013)
TeraScale (2005−2013)
GPU code name
RV770
RV740
Market segment
Desktop
Desktop
Release date
June 2008
April 2009
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
1x 6-pin
Core clock speed
750 MHz
750 MHz
Floating-point performance
1,200.0 gflops
960.0 gflops
Manufacturing process technology
55 nm
40 nm
Number of transistors
956 million
826 million
Pipelines / CUDA cores
800
640
Power consumption (TDP)
150 Watt
80 Watt
Texture fill rate
30.00
24.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
512 MB
Memory bus width
256 Bit
128 Bit
Memory clock speed
3600 MHz
3200 MHz
Memory bandwidth
115.2 GB/s
51.2 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
1.1
OpenGL
3.3
3.3
Shader Model
4.1
4.1
Vulkan
N/A
N/A