Radeon R9 M390X and GeForce GTX 680M - video card comparison
Passmark - benchmark score Radeon R9 M390X vs GeForce GTX 680M
Radeon R9 M390X
3705
GeForce GTX 680M
3312
Radeon R9 M390X
GeForce GTX 680M
Architecture
GCN 3 (2014−2016)
Kepler (2012−2018)
GPU code name
Amethyst (XT) / Tonga
N13E-GTX
Market segment
Laptop
Laptop
Release date
June 2015
June 2012
Bus support
PCIe 3.0
PCI Express 3.0
Interface
PCIe 3.0 x16
MXM-B (3.0)
Supplementary power connectors
None
None
SLI options
-
+
Boost clock speed
-
758 MHz
Core clock speed
723 MHz
720 MHz
CUDA cores
-
1344
Floating-point performance
2,961 gflops
2,038 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
5,000 million
3,540 million
Pipelines / CUDA cores
2048
1344
Power consumption (TDP)
100 Watt
100 Watt
Texture fill rate
92.54
80.6 billion/sec
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
4 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
-
1800 MHz
Memory bandwidth
160.0 GB/s
115.2 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
Eyefinity
1
-
DirectX
DirectX® 12
12 API
CUDA
-
+
Mantle
+
-
OpenCL
Not Listed
1.1
OpenGL
4.4
4.5
Shader Model
6.3
5.1
Vulkan
+
1.1.126
AppAcceleration
-
-
DualGraphics
1
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
Optimus
-
+
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-