Radeon HD 4870 and Radeon HD 8950M - video card comparison
Radeon HD 4870
Radeon HD 8950M
Architecture
TeraScale (2005−2013)
GCN 2.0 (2013−2017)
GPU code name
RV770
Saturn
Market segment
Desktop
Desktop
Release date
June 2008
May 2013
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 6-pin
-
Core clock speed
750 MHz
1075 MHz
Floating-point performance
1,200.0 gflops
1,651 gflops
Manufacturing process technology
55 nm
28 nm
Number of transistors
956 million
2,080 million
Pipelines / CUDA cores
800
768
Power consumption (TDP)
150 Watt
100 Watt
Texture fill rate
30.00
51.60
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
3600 MHz
5500 MHz
Memory bandwidth
115.2 GB/s
88 GB/s
Display Connectors
2x DVI, 1x S-Video
No outputs
DirectX
10.1 (10_1)
12 (12_0)
OpenCL
1.1
2.0
OpenGL
3.3
4.6
Shader Model
4.1
6.3
Vulkan
N/A
1.2.131