Radeon HD 6870 X2 and Radeon RX 550 - video card comparison
Radeon HD 6870 X2
Radeon RX 550
Architecture
TeraScale 2 (2009−2015)
GCN 4.0 (2016−2020)
GPU code name
Barts
Lexa
Market segment
Desktop
Desktop
Release date
July 2011
April 2017
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
-
None
Boost clock speed
-
1183 MHz
Core clock speed
900 MHz
1100 MHz
Floating-point performance
2x 2,016.0 gflops
1,211 gflops
Manufacturing process technology
40 nm
14 nm
Number of transistors
1,700 million
2,200 million
Pipelines / CUDA cores
1120
512
Power consumption (TDP)
300 Watt
50 Watt
Texture fill rate
50.40
37.86
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
4 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
4200 MHz
7000 MHz
Memory bandwidth
134.4 GB/s
112.0 GB/s
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
+
+
DirectX
11.2 (11_0)
12 (12_0)
OpenCL
1.2
2.0
OpenGL
4.4
4.6
Shader Model
5.0
6.4
Vulkan
N/A
1.2.131