Radeon HD 4870 and Radeon RX 550 - video card comparison
Passmark - benchmark score Radeon HD 4870 vs Radeon RX 550
Radeon HD 4870
1411
Radeon RX 550
2809
Radeon HD 4870
Radeon RX 550
Architecture
TeraScale (2005−2013)
GCN 4.0 (2016−2020)
GPU code name
RV770
Lexa
Market segment
Desktop
Desktop
Release date
June 2008
April 2017
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
2x 6-pin
None
Boost clock speed
-
1183 MHz
Core clock speed
750 MHz
1100 MHz
Floating-point performance
1,200.0 gflops
1,211 gflops
Manufacturing process technology
55 nm
14 nm
Number of transistors
956 million
2,200 million
Pipelines / CUDA cores
800
512
Power consumption (TDP)
150 Watt
50 Watt
Texture fill rate
30.00
37.86
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
4 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
3600 MHz
7000 MHz
Memory bandwidth
115.2 GB/s
112.0 GB/s
Display Connectors
2x DVI, 1x S-Video
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
-
+
DirectX
10.1 (10_1)
12 (12_0)
OpenCL
1.1
2.0
OpenGL
3.3
4.6
Shader Model
4.1
6.4
Vulkan
N/A
1.2.131