Radeon HD 7870 and Radeon 550X Mobile - video card comparison
Radeon HD 7870
Radeon 550X Mobile
Architecture
GCN (2011−2017)
GCN 4.0 (2016−2020)
GPU code name
Pitcairn XT
Polaris 23
Market segment
Desktop
Laptop
Release date
March 2012
April 2018
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
2x 6-pin
-
Boost clock speed
-
1287 MHz
Core clock speed
1000 MHz
1100 MHz
Floating-point performance
-
1,647 gflops
Manufacturing process technology
28 nm
14 nm
Number of transistors
2800 Million
2,200 million
Pipelines / CUDA cores
1280
640
Power consumption (TDP)
175 Watt
50 Watt
Texture fill rate
80.00
51.48
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
4800 MHz
6000 MHz
Memory bandwidth
153.6 GB/s
48 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
+
-
HDMI
+
-
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