Radeon HD 7870M and Radeon HD 8550M - video card comparison
Radeon HD 7870M
Radeon HD 8550M
Architecture
GCN (2011−2017)
GCN (2011−2017)
GPU code name
Heathrow XT
Sun
Market segment
Laptop
Laptop
Release date
April 2012
November 2012
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Boost clock speed
-
850 MHz
Core clock speed
800 MHz
700 MHz
Floating-point performance
1,024 gflops
544.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,500 million
690 million
Pipelines / CUDA cores
640
384
Power consumption (TDP)
45 Watt
-
Texture fill rate
32.00
17.00
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
1 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
4000 MHz
1800 MHz
Memory bandwidth
64 GB/s
14.4 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_1)
12 (11_1)
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.2.131
1.2.131