Radeon R9 M390X and Radeon R9 M290X - video card comparison
Passmark - benchmark score Radeon R9 M390X vs Radeon R9 M290X
Radeon R9 M390X
3705
Radeon R9 M290X
3360
Radeon R9 M390X
Radeon R9 M290X
Architecture
GCN 3 (2014−2016)
GCN (2011−2017)
GPU code name
Amethyst (XT) / Tonga
Neptune
Market segment
Laptop
Laptop
Release date
June 2015
January 2014
Bus support
PCIe 3.0
PCIe 3.0 x16
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
None
Boost clock speed
-
900 MHz
Compute units
-
20
Core clock speed
723 MHz
850 MHz
Floating-point performance
2,961 gflops
2,304 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
5,000 million
2,800 million
Pipelines / CUDA cores
2048
1280
Power consumption (TDP)
100 Watt
100 Watt
Texture fill rate
92.54
72.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
4 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
-
1200 MHz
Memory bandwidth
160.0 GB/s
153.6 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
Eyefinity
1
1
DirectX
DirectX® 12
DirectX® 11
Mantle
+
+
OpenCL
Not Listed
Not Listed
OpenGL
4.4
4.4
Shader Model
6.3
5.1
Vulkan
+
-
AppAcceleration
-
-
DualGraphics
1
1
Enduro
-
-
FreeSync
1
1
HD3D
+
+
PowerTune
+
+
Switchable graphics
1
1
TrueAudio
-
-
ZeroCore
+
+