GeForce 840M and GeForce GT 720 - video card comparison
Passmark - benchmark score GeForce 840M vs GeForce GT 720
GeForce 840M
1121
GeForce GT 720
628
GeForce 840M
GeForce GT 720
Architecture
Maxwell (2014−2018)
Kepler 2.0 (2013−2015)
GPU code name
N15S-GT
GK208B
Market segment
Laptop
Desktop
Release date
March 2014
September 2014
Bus support
PCI Express 2.0, PCI Express 3.0
PCI Express 2.0
Interface
PCIe 3.0 x8
PCIe 2.0 x8
Supplementary power connectors
-
None
Boost clock speed
1124 MHz
-
Core clock speed
1029 MHz
797 MHz
CUDA cores
-
192
Floating-point performance
863.2 gflops
306.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
-
915 million
Pipelines / CUDA cores
384
192
Power consumption (TDP)
33 Watt
19 Watt
Maximum GPU temperature
-
98 °C
Texture fill rate
17.98
12.75
Memory type
DDR3
DDR3 / GDDR5
Maximum RAM amount
4 GB
1 GB or 1 GB
Memory bus width
64 Bit
64 Bit
Memory clock speed
2000 MHz
1.8 GBps or 5.0 GB/s
Memory bandwidth
16.02 GB/s
14.4 (DDR3) or 40 (GDDR5)
Shared memory
-
-
Display Connectors
No outputs
Dual Link DVI-DHDMIVGA
Multi monitor support
-
3 displays
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
2048x1536
Audio input for HDMI
-
Internal
DirectX
12 (11_0)
12 (11_0)
CUDA
+
+
OpenCL
1.2
1.2
OpenGL
4.5
4.4
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126
3D Blu-Ray
-
+
3D Gaming
-
+
3D Vision
-
+
GameWorks
+
-
GPU Boost
2.0
-
Optimus
+
-