GeForce GT 640M and GeForce 6600 GT - video card comparison
Passmark - benchmark score GeForce GT 640M vs GeForce 6600 GT
GeForce GT 640M
946
GeForce 6600 GT
147
GeForce GT 640M
GeForce 6600 GT
Architecture
Kepler (2012−2018)
Curie (2003−2013)
GPU code name
N13P-GS
NV43 A2
Market segment
Laptop
Desktop
Release date
March 2012
August 2004
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 1.0 x16
Supplementary power connectors
-
None
Boost clock speed
645 MHz
-
Core clock speed
Up to 625 MHz
500 MHz
CUDA cores
384
-
Floating-point performance
480.0 gflops
-
Manufacturing process technology
28 nm
110 nm
Number of transistors
1,270 million
146 million
Pipelines / CUDA cores
384
-
Power consumption (TDP)
32 Watt
-
Texture fill rate
Up to 20.0 billion/sec
4.000
Memory type
DDR3\GDDR5
GDDR3
Maximum RAM amount
2 GB
128 MB
Memory bus width
128bit
128 Bit
Memory clock speed
1800 - 4000 MHz
1000 MHz
Memory bandwidth
Up to 64.0 GB/s
16 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x DVI, 1x VGA, 1x S-Video
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
9.0c (9_3)
CUDA
+
-
OpenCL
1.1
N/A
OpenGL
4.5
2.1
Shader Model
5.1
3.0
Vulkan
1.1.126
N/A
3D Blu-Ray
+
-
Optimus
+
-