Radeon RX 550 and Radeon X1950 XT - video card comparison
Radeon RX 550
Radeon X1950 XT
Architecture
GCN 4.0 (2016−2020)
R500 (2005−2007)
GPU code name
Lexa
R580+
Market segment
Desktop
Desktop
Release date
April 2017
October 2006
Interface
PCIe 3.0 x8
PCIe 1.0 x16
Supplementary power connectors
None
1x 6-pin
Boost clock speed
1183 MHz
-
Core clock speed
1100 MHz
625 MHz
Floating-point performance
1,211 gflops
-
Manufacturing process technology
14 nm
90 nm
Number of transistors
2,200 million
384 million
Pipelines / CUDA cores
512
-
Power consumption (TDP)
50 Watt
96 Watt
Texture fill rate
37.86
10.00
Memory type
GDDR5
GDDR3
Maximum RAM amount
4 GB
256 MB
Memory bus width
128 Bit
256 Bit
Memory clock speed
7000 MHz
1800 MHz
Memory bandwidth
112.0 GB/s
57.6 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
2x DVI, 1x S-Video
HDMI
+
-
DirectX
12 (12_0)
9.0c (9_3)
OpenCL
2.0
N/A
OpenGL
4.6
2.0
Shader Model
6.4
3.0
Vulkan
1.2.131
N/A