Radeon RX 580 and Radeon R5 M255 - video card comparison
Passmark - benchmark score Radeon RX 580 vs Radeon R5 M255
Radeon RX 580
9140
Radeon R5 M255
550
Radeon RX 580
Radeon R5 M255
Architecture
Polaris (2016−2019)
GCN (2011−2017)
GPU code name
Polaris 20
Topaz Pro / Sun
Market segment
Desktop
Laptop
Release date
April 2017
May 2014
Bus support
-
PCIe 3.0 x8
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
1x 8-pin
-
Boost clock speed
1340 MHz
940 MHz
Compute units
-
5
Core clock speed
1257 MHz
940 MHz
Floating-point performance
6,175 gflops
721.9 gflops
Manufacturing process technology
14 nm
28 nm
Number of transistors
5,700 million
1,550 million
Pipelines / CUDA cores
2304
320
Power consumption (TDP)
185 Watt
-
Texture fill rate
193.0
22.56
Memory type
GDDR5
DDR3
Maximum RAM amount
8 GB
4 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
8000 MHz
1000 MHz
Memory bandwidth
256.0 GB/s
16 GB/s
Shared memory
-
-
Display Connectors
1x HDMI, 3x DisplayPort
No outputs
Eyefinity
-
+
HDMI
+
-
DirectX
12 (12_0)
DirectX® 11
Mantle
-
+
OpenCL
2.0
Not Listed
OpenGL
4.6
4.4
Shader Model
6.4
6.3
Vulkan
1.2.131
-
AppAcceleration
-
+
DualGraphics
-
1
Enduro
-
-
HD3D
-
+
PowerTune
-
+
Switchable graphics
-
1
TrueAudio
-
-
ZeroCore
-
+