Radeon R9 M270X and GeForce 840M - video card comparison
Passmark - benchmark score Radeon R9 M270X vs GeForce 840M
Radeon R9 M270X
1240
GeForce 840M
1121
Radeon R9 M270X
GeForce 840M
Architecture
GCN 1.0 (2012−2020)
Maxwell (2014−2018)
GPU code name
Venus
N15S-GT
Market segment
Desktop
Laptop
Release date
March 2014
March 2014
Bus support
PCIe 3.0 x16
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Boost clock speed
775 MHz
1124 MHz
Compute units
10
-
Core clock speed
725 MHz
1029 MHz
Floating-point performance
1,536 gflops
863.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,500 million
-
Pipelines / CUDA cores
640
384
Power consumption (TDP)
-
33 Watt
Texture fill rate
31.00
17.98
Memory type
GDDR5
DDR3
Maximum RAM amount
4 GB
4 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
1125 MHz
2000 MHz
Memory bandwidth
72 GB/s
16.02 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
Eyefinity
1
-
DirectX
DirectX® 11
12 (11_0)
CUDA
-
+
Mantle
+
-
OpenCL
Not Listed
1.2
OpenGL
4.4
4.5
Shader Model
5.1
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
+
-