GeForce 840M and Radeon R7 240 - video card comparison
Passmark - benchmark score GeForce 840M vs Radeon R7 240
GeForce 840M
1121
Radeon R7 240
930
GeForce 840M
Radeon R7 240
Architecture
Maxwell (2014−2018)
GCN 1.0 (2012−2020)
GPU code name
N15S-GT
Oland
Market segment
Laptop
Desktop
Release date
March 2014
October 2013
Bus support
PCI Express 2.0, PCI Express 3.0
PCIe 3.0
Interface
PCIe 3.0 x8
PCIe 3.0 x8
Supplementary power connectors
-
N/A
Boost clock speed
1124 MHz
780 MHz
Core clock speed
1029 MHz
-
Floating-point performance
863.2 gflops
499.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
-
950 million
Pipelines / CUDA cores
384
320
Power consumption (TDP)
33 Watt
50 Watt
Texture fill rate
17.98
14.00
Memory type
DDR3
GDDR5
Maximum RAM amount
4 GB
2 GB
Memory bus width
64 Bit
128 Bit
Memory clock speed
2000 MHz
1150 MHz
Memory bandwidth
16.02 GB/s
72 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x VGA
HDMI
-
+
DisplayPort support
-
-
DirectX
12 (11_0)
DirectX® 12
CUDA
+
-
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.5
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
-
AppAcceleration
-
-
CrossFire
-
1
DDMA audio
-
+
Enduro
-
-
FreeSync
-
1
GameWorks
+
-
GPU Boost
2.0
-
HD3D
-
-
Optimus
+
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-