GeForce GT 640M LE and GeForce GT 425M - video card comparison
Passmark - benchmark score GeForce GT 640M LE vs GeForce GT 425M
GeForce GT 640M LE
720
GeForce GT 425M
543
GeForce GT 640M LE
GeForce GT 425M
Architecture
Fermi / Kepler (2012)
Fermi (2010−2014)
GPU code name
N13P-LP
N11P-GS
Market segment
Laptop
Laptop
Release date
March 2012
August 2010
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Core clock speed
Up to 500 MHz
560 MHz
CUDA cores
Up to 384
96
Floating-point performance
384.0 gflops
215.04 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
585 million
585 million
Pipelines / CUDA cores
384
96
Power consumption (TDP)
20 Watt
23 Watt
Texture fill rate
Up to 16.0 billion/sec
6.7 billion/sec
Memory type
DDR3\DDR5
DDR3
Maximum RAM amount
2 GB
1 GB
Memory bus width
128bit
128 Bit
Memory clock speed
1800 - 4000 MHz
800 MHz
Memory bandwidth
Up to 28.8 GB/s
25.6 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
12 API
CUDA
+
+
OpenCL
1.1
1.1
OpenGL
4.5
4.5
Shader Model
5.1
5.1
Vulkan
N/A
N/A
3D Blu-Ray
+
-
Optimus
+
-