GeForce GT 640 and GeForce 315M - video card comparison
Passmark - benchmark score GeForce GT 640 vs GeForce 315M
GeForce GT 640
1209
GeForce 315M
118
GeForce GT 640
GeForce 315M
Architecture
Kepler (2012−2018)
GT2xx (2009−2012)
GPU code name
GK107
N11M-GE
Market segment
Desktop
Laptop
Release date
June 2012
December 2010
Bus support
-
PCI-E 2.0
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
-
Core clock speed
902 MHz
606 MHz
CUDA cores
-
16
Floating-point performance
692.7 gflops
38.78 gflops
Gigaflops
-
73
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,270 million
260 million
Pipelines / CUDA cores
384
16
Power consumption (TDP)
65 Watt
14 Watt
Texture fill rate
28.86
4.848
Memory type
DDR3
GDDR3, DDR3
Maximum RAM amount
2 GB
Up to 512 MB
Memory bus width
128 Bit
64 Bit
Memory clock speed
1782 MHz
Up to 800 (DDR3), Up to 800 (GDDR3) MHz
Memory bandwidth
28.51 GB/s
12.8 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
DisplayPortHDMIVGADual Link DVISingle Link DVI
Multi monitor support
-
+
HDMI
+
+
Maximum VGA resolution
-
2048x1536
DirectX
12 (11_0)
11.1 (10_1)
CUDA
3.0
+
OpenCL
1.2
1.1
OpenGL
4.6
4.1
Shader Model
5.1
4.1
Vulkan
1.1.126
N/A
Power management
-
8.0