Radeon RX 480 Mobile and Radeon R9 M390X - video card comparison
Radeon RX 480 Mobile
Radeon R9 M390X
Architecture
Polaris (2016−2019)
GCN 3 (2014−2016)
GPU code name
Polaris
Amethyst (XT) / Tonga
Market segment
Laptop
Laptop
Release date
August 2016
June 2015
Bus support
-
PCIe 3.0
Interface
MXM-B (3.0)
PCIe 3.0 x16
Supplementary power connectors
-
None
Boost clock speed
1077 MHz
-
Core clock speed
-
723 MHz
Floating-point performance
4,963 gflops
2,961 gflops
Manufacturing process technology
14 nm
28 nm
Number of transistors
5,700 million
5,000 million
Pipelines / CUDA cores
2304
2048
Power consumption (TDP)
100 Watt
100 Watt
Texture fill rate
155.1
92.54
Memory type
GDDR5
GDDR5
Maximum RAM amount
8 GB
4 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
8000 MHz
-
Memory bandwidth
256.0 GB/s
160.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
Eyefinity
-
1
DirectX
12 (12_0)
DirectX® 12
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
-
-
FreeSync
-
1
HD3D
-
+
PowerTune
-
+
Switchable graphics
-
1
TrueAudio
-
-
ZeroCore
-
+