GeForce GTX 650 and GeForce 840M - video card comparison
Passmark - benchmark score GeForce GTX 650 vs GeForce 840M
GeForce GTX 650
1801
GeForce 840M
1121
GeForce GTX 650
GeForce 840M
Architecture
Kepler (2012−2018)
Maxwell (2014−2018)
GPU code name
GK107
N15S-GT
Market segment
Desktop
Laptop
Release date
September 2012
March 2014
Bus support
PCI Express 3.0
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
One 6-pin
-
Boost clock speed
-
1124 MHz
Core clock speed
1058 MHz
1029 MHz
CUDA cores
384
-
Floating-point performance
812.5 gflops
863.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,270 million
-
Pipelines / CUDA cores
384
384
Power consumption (TDP)
64 Watt
33 Watt
Texture fill rate
33.9 billion/sec
17.98
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
4 GB
Memory bus width
128-bit GDDR5
64 Bit
Memory clock speed
5.0 GB/s
2000 MHz
Memory bandwidth
80.0 GB/s
16.02 GB/s
Shared memory
-
-
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One Mini HDMI
No outputs
Multi monitor support
4 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
4.3
4.5
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
-
+