GeForce GT 640 and GeForce 8800M GTX - video card comparison
Passmark - benchmark score GeForce GT 640 vs GeForce 8800M GTX
GeForce GT 640
1209
GeForce 8800M GTX
476
GeForce GT 640
GeForce 8800M GTX
Architecture
Kepler (2012−2018)
G9x (2007−2010)
GPU code name
GK107
NB8E-GTX
Market segment
Desktop
Laptop
Release date
June 2012
November 2007
Interface
PCIe 3.0 x16
MXM-HE
Supplementary power connectors
None
None
SLI options
-
+
Core clock speed
902 MHz
500 MHz
CUDA cores
-
96
Floating-point performance
692.7 gflops
240 gflops
Manufacturing process technology
28 nm
65 nm
Number of transistors
1,270 million
754 million
Pipelines / CUDA cores
384
96
Power consumption (TDP)
65 Watt
65 Watt
Texture fill rate
28.86
24.00
Memory type
DDR3
GDDR3
Maximum RAM amount
2 GB
512 MB
Memory bus width
128 Bit
256 Bit
Memory clock speed
1782 MHz
800 MHz
Memory bandwidth
28.51 GB/s
51.2 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
-
DirectX
12 (11_0)
11.1 (10_0)
CUDA
3.0
1.1
OpenCL
1.2
1.1
OpenGL
4.6
3.3
Shader Model
5.1
4.0
Vulkan
1.1.126
N/A