GeForce GT 640M and GeForce G105M - video card comparison
Passmark - benchmark score GeForce GT 640M vs GeForce G105M
GeForce GT 640M
946
GeForce G105M
127
GeForce GT 640M
GeForce G105M
Architecture
Kepler (2012−2018)
Tesla 2.0 (2007−2013)
GPU code name
N13P-GS
GT218
Market segment
Laptop
Laptop
Release date
March 2012
July 2009
Bus support
PCI Express 2.0, PCI Express 3.0
PCI-E 2.0
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Boost clock speed
645 MHz
-
Core clock speed
Up to 625 MHz
500 MHz
CUDA cores
384
8
Floating-point performance
480.0 gflops
25.6 gflops
Gigaflops
-
38
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,270 million
260 million
Pipelines / CUDA cores
384
16
Power consumption (TDP)
32 Watt
14 Watt
Texture fill rate
Up to 20.0 billion/sec
4.000
Memory type
DDR3\GDDR5
GDDR3
Maximum RAM amount
2 GB
Up to 512 MB
Memory bus width
128bit
64 Bit
Memory clock speed
1800 - 4000 MHz
500 (DDR2)/700 (GDDR3) MHz
Memory bandwidth
Up to 64.0 GB/s
8 (DDR2)/11 (GDDR3)
Shared memory
-
-
Display Connectors
No outputs
VGADual Link DVISingle Link DVIDisplayPortHDMI
Multi monitor support
-
+
HDMI
+
+
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
2048x1536
DirectX
12 API
11.1 (10_1)
CUDA
+
+
OpenCL
1.1
1.1
OpenGL
4.5
2.1
Shader Model
5.1
4.1
Vulkan
1.1.126
N/A
3D Blu-Ray
+
-
Optimus
+
-
Power management
-
8.0