Radeon HD 7870M and Radeon 550X Mobile - video card comparison
Radeon HD 7870M
Radeon 550X Mobile
Architecture
GCN (2011−2017)
GCN 4.0 (2016−2020)
GPU code name
Heathrow XT
Polaris 23
Market segment
Laptop
Laptop
Release date
April 2012
April 2018
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Boost clock speed
-
1287 MHz
Core clock speed
800 MHz
1100 MHz
Floating-point performance
1,024 gflops
1,647 gflops
Manufacturing process technology
28 nm
14 nm
Number of transistors
1,500 million
2,200 million
Pipelines / CUDA cores
640
640
Power consumption (TDP)
45 Watt
50 Watt
Texture fill rate
32.00
51.48
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
4000 MHz
6000 MHz
Memory bandwidth
64 GB/s
48 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_1)
12 (12_0)
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.4
Vulkan
1.2.131
1.2.131