Radeon R9 M390X and Radeon HD 8670M - video card comparison
Passmark - benchmark score Radeon R9 M390X vs Radeon HD 8670M
Radeon R9 M390X
3705
Radeon HD 8670M
536
Radeon R9 M390X
Radeon HD 8670M
Architecture
GCN 3 (2014−2016)
GCN (2011−2017)
GPU code name
Amethyst (XT) / Tonga
Sun
Market segment
Laptop
Laptop
Release date
June 2015
November 2012
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
None
-
Boost clock speed
-
825 MHz
Core clock speed
723 MHz
775 MHz
Floating-point performance
2,961 gflops
633.6 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
5,000 million
690 million
Pipelines / CUDA cores
2048
384
Power consumption (TDP)
100 Watt
-
Texture fill rate
92.54
19.50
Memory type
GDDR5
DDR3
Maximum RAM amount
4 GB
2 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
-
2000 MHz
Memory bandwidth
160.0 GB/s
16 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
Eyefinity
1
-
DirectX
DirectX® 12
12 (11_1)
Mantle
+
-
OpenCL
Not Listed
1.2
OpenGL
4.4
4.6
Shader Model
6.3
5.1
Vulkan
+
1.2.131
AppAcceleration
-
-
DualGraphics
1
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-