Radeon RX 550 and Radeon HD 6990M Crossfire - video card comparison
Radeon RX 550
Radeon HD 6990M Crossfire
Architecture
GCN 4.0 (2016−2020)
Terascale 2 (2009−2015)
GPU code name
Lexa
Blackcomb XTX
Market segment
Desktop
Laptop
Release date
April 2017
July 2011
Interface
PCIe 3.0 x8
-
Supplementary power connectors
None
-
Boost clock speed
1183 MHz
-
Core clock speed
1100 MHz
715 MHz
Floating-point performance
1,211 gflops
-
Manufacturing process technology
14 nm
40 nm
Number of transistors
2,200 million
2x1700 Million
Pipelines / CUDA cores
512
2240
Power consumption (TDP)
50 Watt
-
Texture fill rate
37.86
-
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
2x2 GB
Memory bus width
128 Bit
256 Bit
Memory clock speed
7000 MHz
900 MHz
Memory bandwidth
112.0 GB/s
-
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
-
HDMI
+
-
DirectX
12 (12_0)
11
OpenCL
2.0
-
OpenGL
4.6
-
Shader Model
6.4
-
Vulkan
1.2.131
-