GeForce 840M and GeForce GT 520 - video card comparison
Passmark - benchmark score GeForce 840M vs GeForce GT 520
GeForce 840M
1121
GeForce GT 520
318
GeForce 840M
GeForce GT 520
Architecture
Maxwell (2014−2018)
Fermi 2.0 (2010−2014)
GPU code name
N15S-GT
GF119
Market segment
Laptop
Desktop
Release date
March 2014
April 2011
Bus support
PCI Express 2.0, PCI Express 3.0
16x PCI-E 2.0
Interface
PCIe 3.0 x8
PCIe 2.0 x16
Supplementary power connectors
-
None
Boost clock speed
1124 MHz
-
Core clock speed
1029 MHz
810 MHz
CUDA cores
-
48
Floating-point performance
863.2 gflops
155.52 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
-
292 million
Pipelines / CUDA cores
384
48
Power consumption (TDP)
33 Watt
29 Watt
Maximum GPU temperature
-
102 °C
Texture fill rate
17.98
6.5 billion/sec
Memory type
DDR3
DDR3
Maximum RAM amount
4 GB
1 GB (DDR3)
Memory bus width
64 Bit
64 Bit
Memory clock speed
2000 MHz
900 MHz (DDR3)
Memory bandwidth
16.02 GB/s
14.4 GB/s
Shared memory
-
-
Display Connectors
No outputs
Dual Link DVI-IHDMIVGA (optional)
Multi monitor support
-
+
HDMI
-
+
Maximum VGA resolution
-
2048x1536
Audio input for HDMI
-
Internal
DirectX
12 (11_0)
12 (11_0)
CUDA
+
+
OpenCL
1.2
1.1
OpenGL
4.5
4.2
Shader Model
5.1
5.1
Vulkan
1.1.126
N/A
GameWorks
+
-
GPU Boost
2.0
-
Optimus
+
-