Radeon R5 M255 and Radeon Instinct Vega - video card comparison
Radeon R5 M255
Radeon Instinct Vega
Architecture
GCN (2011−2017)
GCN 5.1 (2018−2021)
GPU code name
Topaz Pro / Sun
Vega 20
Market segment
Laptop
Desktop
Release date
May 2014
-
Bus support
PCIe 3.0 x8
-
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Supplementary power connectors
-
2x 8-pin
Boost clock speed
940 MHz
1500 MHz
Compute units
5
-
Core clock speed
940 MHz
1000 MHz
Floating-point performance
721.9 gflops
-
Manufacturing process technology
28 nm
7 nm
Number of transistors
1,550 million
-
Pipelines / CUDA cores
320
-
Power consumption (TDP)
-
225 Watt
Texture fill rate
22.56
-
Memory type
DDR3
-
Maximum RAM amount
4 GB
-
Memory bus width
64 Bit
-
Memory clock speed
1000 MHz
2400 MHz
Memory bandwidth
16 GB/s
-
Shared memory
-
-
Display Connectors
No outputs
No outputs
Eyefinity
+
-
DirectX
DirectX® 11
12.0 (12_1)
Mantle
+
-
OpenCL
Not Listed
-
OpenGL
4.4
4.6
Shader Model
6.3
-
AppAcceleration
+
-
DualGraphics
1
-
Enduro
-
-
HD3D
+
-
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-