GeForce GTX 650 and GeForce GT 640M - video card comparison
Passmark - benchmark score GeForce GTX 650 vs GeForce GT 640M
GeForce GTX 650
1801
GeForce GT 640M
946
GeForce GTX 650
GeForce GT 640M
Architecture
Kepler (2012−2018)
Kepler (2012−2018)
GPU code name
GK107
N13P-GS
Market segment
Desktop
Laptop
Release date
September 2012
March 2012
Bus support
PCI Express 3.0
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
One 6-pin
-
Boost clock speed
-
645 MHz
Core clock speed
1058 MHz
Up to 625 MHz
CUDA cores
384
384
Floating-point performance
812.5 gflops
480.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,270 million
1,270 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
64 Watt
32 Watt
Texture fill rate
33.9 billion/sec
Up to 20.0 billion/sec
Memory type
GDDR5
DDR3\GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
128-bit GDDR5
128bit
Memory clock speed
5.0 GB/s
1800 - 4000 MHz
Memory bandwidth
80.0 GB/s
Up to 64.0 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
Up to 2048x1536
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
12 API
CUDA
+
+
OpenCL
1.2
1.1
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
+
-
Optimus
-
+