GeForce GT 640M LE and Radeon HD 6520G + HD 7450M Dual Graphics - video card comparison
GeForce GT 640M LE
Radeon HD 6520G + HD 7450M Dual Graphics
Architecture
Fermi / Kepler (2012)
Terascale 2 (2009−2015)
GPU code name
N13P-LP
-
Market segment
Laptop
Laptop
Release date
March 2012
February 2012
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 2.0 x16
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Core clock speed
Up to 500 MHz
400 / 700 MHz
CUDA cores
Up to 384
-
Floating-point performance
384.0 gflops
-
Manufacturing process technology
28 nm
40 nm
Number of transistors
585 million
-
Pipelines / CUDA cores
384
480
Power consumption (TDP)
20 Watt
-
Texture fill rate
Up to 16.0 billion/sec
-
Memory type
DDR3\DDR5
-
Maximum RAM amount
2 GB
-
Memory bus width
128bit
64 Bit
Memory clock speed
1800 - 4000 MHz
1800 MHz
Memory bandwidth
Up to 28.8 GB/s
-
Shared memory
-
+
Display Connectors
No outputs
-
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
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DirectX
12 API
11
CUDA
+
-
OpenCL
1.1
-
OpenGL
4.5
-
Shader Model
5.1
-
Vulkan
N/A
-
3D Blu-Ray
+
-
Optimus
+
-