GeForce GT 640M LE and Radeon HD 8550G + HD 8670M Dual Graphics - video card comparison
GeForce GT 640M LE
Radeon HD 8550G + HD 8670M Dual Graphics
Architecture
Fermi / Kepler (2012)
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GPU code name
N13P-LP
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Market segment
Laptop
Laptop
Release date
March 2012
August 2013
Bus support
PCI Express 2.0, PCI Express 3.0
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Interface
PCIe 2.0 x16
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Core clock speed
Up to 500 MHz
720 / 975 MHz
CUDA cores
Up to 384
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Floating-point performance
384.0 gflops
-
Manufacturing process technology
28 nm
28 nm
Number of transistors
585 million
-
Pipelines / CUDA cores
384
640
Power consumption (TDP)
20 Watt
-
Texture fill rate
Up to 16.0 billion/sec
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Memory type
DDR3\DDR5
DDR3
Maximum RAM amount
2 GB
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Memory bus width
128bit
64 Bit
Memory clock speed
1800 - 4000 MHz
2000 MHz
Memory bandwidth
Up to 28.8 GB/s
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Shared memory
-
-
Display Connectors
No outputs
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HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
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DirectX
12 API
11
CUDA
+
-
OpenCL
1.1
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OpenGL
4.5
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Shader Model
5.1
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Vulkan
N/A
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3D Blu-Ray
+
-
Optimus
+
-