Radeon R9 M280X and GeForce 840M - video card comparison
Passmark - benchmark score Radeon R9 M280X vs GeForce 840M
Radeon R9 M280X
837
GeForce 840M
1121
Radeon R9 M280X
GeForce 840M
Architecture
GCN (2011−2017)
Maxwell (2014−2018)
GPU code name
Saturn XT
N15S-GT
Market segment
Laptop
Laptop
Release date
February 2015
March 2014
Bus support
Not Listed
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Boost clock speed
-
1124 MHz
Core clock speed
900 MHz
1029 MHz
Floating-point performance
1,792 gflops
863.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,080 million
-
Pipelines / CUDA cores
896
384
Power consumption (TDP)
-
33 Watt
Texture fill rate
61.60
17.98
Memory type
Not Listed
DDR3
Maximum RAM amount
0 MB
4 GB
Memory bus width
Not Listed
64 Bit
Memory clock speed
-
2000 MHz
Memory bandwidth
96 GB/s
16.02 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
DirectX® 11
12 (11_0)
CUDA
-
+
Mantle
+
-
OpenCL
Not Listed
1.2
OpenGL
4.4
4.5
Shader Model
6.3
5.1
Vulkan
-
1.1.126
AppAcceleration
-
-
DualGraphics
1
-
Enduro
-
-
FreeSync
1
-
GameWorks
-
+
GPU Boost
-
2.0
HD3D
+
-
Optimus
-
+
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-