Radeon HD 4870 and Radeon HD 7550M - video card comparison
Passmark - benchmark score Radeon HD 4870 vs Radeon HD 7550M
Radeon HD 4870
1411
Radeon HD 7550M
478
Radeon HD 4870
Radeon HD 7550M
Architecture
TeraScale (2005−2013)
Terascale 2 (2009−2015)
GPU code name
RV770
Thames-LP / Pro
Market segment
Desktop
Laptop
Release date
June 2008
January 2012
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
-
Boost clock speed
-
550 MHz
Core clock speed
750 MHz
450 MHz
Floating-point performance
1,200.0 gflops
480.0 gflops
Manufacturing process technology
55 nm
40 nm
Number of transistors
956 million
716 million
Pipelines / CUDA cores
800
400
Power consumption (TDP)
150 Watt
14 Watt
Texture fill rate
30.00
12.00
Memory type
GDDR5
GDDR5 / DDR3
Maximum RAM amount
1 GB
1 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
3600 MHz
3200 / 1800 MHz
Memory bandwidth
115.2 GB/s
28.8 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x S-Video
No outputs
DirectX
10.1 (10_1)
11.2 (11_0)
OpenCL
1.1
1.2
OpenGL
3.3
4.4
Shader Model
4.1
5.0
Vulkan
N/A
N/A