Radeon RX 550 and Radeon HD 7770 - video card comparison
Passmark - benchmark score Radeon RX 550 vs Radeon HD 7770
Radeon RX 550
2809
Radeon HD 7770
2235
Radeon RX 550
Radeon HD 7770
Architecture
GCN 4.0 (2016−2020)
GCN (2011−2017)
GPU code name
Lexa
Cape Verde
Market segment
Desktop
Desktop
Release date
April 2017
February 2012
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Supplementary power connectors
None
1x 6-pin
Boost clock speed
1183 MHz
-
Core clock speed
1100 MHz
1000 MHz
Floating-point performance
1,211 gflops
-
Manufacturing process technology
14 nm
28 nm
Number of transistors
2,200 million
1,500 million
Pipelines / CUDA cores
512
640
Power consumption (TDP)
50 Watt
80 Watt
Texture fill rate
37.86
40.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
2 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
7000 MHz
4500 MHz
Memory bandwidth
112.0 GB/s
72 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
-
+
HDMI
+
+
DirectX
12 (12_0)
12 (11_1)
OpenCL
2.0
1.2
OpenGL
4.6
4.6
Shader Model
6.4
5.1
Vulkan
1.2.131
1.2.131