Radeon HD 4870 and Radeon HD 7850M - video card comparison
Passmark - benchmark score Radeon HD 4870 vs Radeon HD 7850M
Radeon HD 4870
1411
Radeon HD 7850M
1413
Radeon HD 4870
Radeon HD 7850M
Architecture
TeraScale (2005−2013)
GCN (2011−2017)
GPU code name
RV770
Heathrow Pro
Market segment
Desktop
Laptop
Release date
June 2008
April 2012
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 6-pin
-
Core clock speed
750 MHz
675 MHz
Floating-point performance
1,200.0 gflops
864.0 gflops
Manufacturing process technology
55 nm
28 nm
Number of transistors
956 million
1,500 million
Pipelines / CUDA cores
800
640
Power consumption (TDP)
150 Watt
40 Watt
Texture fill rate
30.00
27.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
3600 MHz
4000 MHz
Memory bandwidth
115.2 GB/s
64 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x S-Video
No outputs
DirectX
10.1 (10_1)
12 (11_1)
OpenCL
1.1
1.2
OpenGL
3.3
4.6
Shader Model
4.1
5.1
Vulkan
N/A
1.2.131