Radeon RX 550 and Radeon HD 6390 - video card comparison
Radeon RX 550
Radeon HD 6390
Architecture
GCN 4.0 (2016−2020)
TeraScale 2 (2009−2015)
GPU code name
Lexa
Redwood
Market segment
Desktop
Desktop
Release date
April 2017
July 2011
Interface
PCIe 3.0 x8
PCIe 2.0 x16
Supplementary power connectors
None
None
Boost clock speed
1183 MHz
-
Core clock speed
1100 MHz
550 MHz
Floating-point performance
1,211 gflops
352.0 gflops
Manufacturing process technology
14 nm
40 nm
Number of transistors
2,200 million
627 million
Pipelines / CUDA cores
512
320
Power consumption (TDP)
50 Watt
39 Watt
Texture fill rate
37.86
8.800
Memory type
GDDR5
DDR2
Maximum RAM amount
4 GB
1 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
7000 MHz
1000 MHz
Memory bandwidth
112.0 GB/s
16 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 1x VGA
HDMI
+
+
DirectX
12 (12_0)
11.2 (11_0)
OpenCL
2.0
1.2
OpenGL
4.6
4.4
Shader Model
6.4
5.0
Vulkan
1.2.131
N/A