Radeon R9 255 OEM and Radeon RX 580 2048SP - video card comparison
Radeon R9 255 OEM
Radeon RX 580 2048SP
Architecture
GCN 1.0 (2012−2020)
GCN 4.0 (2016−2020)
GPU code name
Cape Verde
Polaris 20
Market segment
Desktop
Desktop
Release date
December 2013
October 2018
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin
1x 8-pin
Boost clock speed
930 MHz
1284 MHz
Core clock speed
900 MHz
1168 MHz
Floating-point performance
952.3 gflops
-
Manufacturing process technology
28 nm
14 nm
Number of transistors
1,500 million
5,700 million
Pipelines / CUDA cores
512
2048
Power consumption (TDP)
65 Watt
150 Watt
Texture fill rate
29.76
164.4
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
8 GB
Memory bus width
128 Bit
256 Bit
Memory clock speed
4600 MHz
7000 MHz
Memory bandwidth
73.6 GB/s
224.0 GB/s
Display Connectors
No outputs
1x DVI, 1x HDMI, 3x DisplayPort
HDMI
-
+
DirectX
12 (11_1)
12 (12_0)
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.4
Vulkan
1.2.131
1.2.131