NVIDIA GeForce GT 640M LE vs AMD Radeon HD 6620G

Comparative analysis of NVIDIA GeForce GT 640M LE and AMD Radeon HD 6620G videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory, Technologies. Benchmark videocards performance analysis: PassMark - G3D Mark, PassMark - G2D Mark, Geekbench - OpenCL, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Fps).

NVIDIA GeForce GT 640M LE

AMD Radeon HD 6620G

Differences

Reasons to consider the NVIDIA GeForce GT 640M LE

Videocard is newer: launch date 10 month(s) later
2.1x better performance in PassMark - G3D Mark: 707 vs 341
Around 67% better performance in PassMark - G2D Mark: 172 vs 103
2.4x better performance in Geekbench - OpenCL: 2344 vs 962
2x better performance in GFXBench 4.0 - Car Chase Offscreen (Frames): 1583 vs 790
Around 30% better performance in GFXBench 4.0 - Manhattan (Frames): 2289 vs 1755
2x better performance in GFXBench 4.0 - Car Chase Offscreen (Fps): 1583 vs 790
Around 30% better performance in GFXBench 4.0 - Manhattan (Fps): 2289 vs 1755

Specifications (specs)
Launch date	4 May 2012 vs 15 June 2011
Benchmarks
PassMark - G3D Mark	707 vs 341
PassMark - G2D Mark	172 vs 103
Geekbench - OpenCL	2344 vs 962
GFXBench 4.0 - Car Chase Offscreen (Frames)	1583 vs 790
GFXBench 4.0 - Manhattan (Frames)	2289 vs 1755
GFXBench 4.0 - Car Chase Offscreen (Fps)	1583 vs 790
GFXBench 4.0 - Manhattan (Fps)	2289 vs 1755

Reasons to consider the AMD Radeon HD 6620G

Around 4% higher pipelines: 400 vs 384
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 32 nm vs 40 nm
Around 6% better performance in GFXBench 4.0 - T-Rex (Frames): 3310 vs 3127
Around 6% better performance in GFXBench 4.0 - T-Rex (Fps): 3310 vs 3127

Specifications (specs)
Pipelines	400 vs 384
Manufacturing process technology	32 nm vs 40 nm
Benchmarks
GFXBench 4.0 - T-Rex (Frames)	3310 vs 3127
GFXBench 4.0 - T-Rex (Fps)	3310 vs 3127

Compare benchmarks

GPU 1: NVIDIA GeForce GT 640M LE
GPU 2: AMD Radeon HD 6620G

PassMark - G3D Mark

GPU 1

GPU 2

707

341

PassMark - G2D Mark

GPU 1

GPU 2

172

103

Geekbench - OpenCL

GPU 1

GPU 2

2344

962

GFXBench 4.0 - Car Chase Offscreen (Frames)

GPU 1

GPU 2

1583

790

GFXBench 4.0 - Manhattan (Frames)

GPU 1

GPU 2

2289

1755

GFXBench 4.0 - T-Rex (Frames)

GPU 1

GPU 2

3127

3310

GFXBench 4.0 - Car Chase Offscreen (Fps)

GPU 1

GPU 2

1583

790

GFXBench 4.0 - Manhattan (Fps)

GPU 1

GPU 2

2289

1755

GFXBench 4.0 - T-Rex (Fps)

GPU 1

GPU 2

3127

3310

Name	NVIDIA GeForce GT 640M LE	AMD Radeon HD 6620G
PassMark - G3D Mark	707	341
PassMark - G2D Mark	172	103
Geekbench - OpenCL	2344	962
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	6.495
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	251.012
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.649
CompuBench 1.5 Desktop - Video Composition (Frames/s)	13.333
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	13.954
GFXBench 4.0 - Car Chase Offscreen (Frames)	1583	790
GFXBench 4.0 - Manhattan (Frames)	2289	1755
GFXBench 4.0 - T-Rex (Frames)	3127	3310
GFXBench 4.0 - Car Chase Offscreen (Fps)	1583	790
GFXBench 4.0 - Manhattan (Fps)	2289	1755
GFXBench 4.0 - T-Rex (Fps)	3127	3310

Compare specifications (specs)

	NVIDIA GeForce GT 640M LE	AMD Radeon HD 6620G
Essentials
Architecture	Fermi	Terascale 2
Code name	GF108	Llano
Launch date	4 May 2012	15 June 2011
Launch price (MSRP)	$849.99
Place in performance rating	1350	1353
Price now	$849.99
Type	Laptop	Laptop
Value for money (0-100)	1.17
Technical info
CUDA cores	Up to 384
Floating-point performance	384.0 gflops
Manufacturing process technology	40 nm	32 nm
Pipelines	384	400
Thermal Design Power (TDP)	20 Watt
Transistor count	585 million	1000 Million
Core clock speed		400 MHz
Video outputs and ports
Display Connectors	No outputs
HDCP
HDMI
Maximum VGA resolution	Up to 2048x1536
Compatibility, dimensions and requirements
Bus support	PCI Express 2.0, PCI Express 3.0
Interface	PCIe 2.0 x16
Laptop size	medium sized	medium sized
API support
DirectX	12 API	11
OpenCL	1.1
OpenGL	4.5
Memory
Maximum RAM amount	1 GB
Memory bus width	128bit
Memory clock speed	3140 MHz
Memory type	DDR3\DDR5
Shared memory	0	1
Technologies
3D Blu-Ray
3D Vision
3D Vision / 3DTV Play
CUDA
DirectCompute
DirectX 11	DirectX 11
Optimus
Verde Drivers