NVIDIA GeForce GT 640 vs AMD Radeon HD 6490M

Comparative analysis of NVIDIA GeForce GT 640 and AMD Radeon HD 6490M videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory. 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), 3DMark Fire Strike - Graphics Score.

NVIDIA GeForce GT 640

AMD Radeon HD 6490M

Differences

Reasons to consider the NVIDIA GeForce GT 640

Videocard is newer: launch date 1 year(s) 5 month(s) later
Around 13% higher core clock speed: 902 MHz vs 800 MHz
4.5x more texture fill rate: 28.86 GTexel / s vs 6.4 GTexel / s
2.4x more pipelines: 384 vs 160
2.7x better floating-point performance: 692.7 gflops vs 256 gflops
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 28 nm vs 40 nm
4x more maximum memory size: 2 GB vs 512 MB
3.1x better performance in PassMark - G3D Mark: 1177 vs 378
4.5x better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 11.448 vs 2.554
2.1x better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 206.777 vs 96.344
2.4x better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 14.637 vs 6.001
Around 93% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 20.86 vs 10.814
Around 69% better performance in GFXBench 4.0 - Manhattan (Frames): 2375 vs 1405
Around 31% better performance in GFXBench 4.0 - T-Rex (Frames): 3328 vs 2543
Around 69% better performance in GFXBench 4.0 - Manhattan (Fps): 2375 vs 1405
Around 31% better performance in GFXBench 4.0 - T-Rex (Fps): 3328 vs 2543

Specifications (specs)
Launch date	5 June 2012 vs 4 January 2011
Core clock speed	902 MHz vs 800 MHz
Texture fill rate	28.86 GTexel / s vs 6.4 GTexel / s
Pipelines	384 vs 160
Floating-point performance	692.7 gflops vs 256 gflops
Manufacturing process technology	28 nm vs 40 nm
Maximum memory size	2 GB vs 512 MB
Benchmarks
PassMark - G3D Mark	1177 vs 378
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	11.448 vs 2.554
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	206.777 vs 96.344
CompuBench 1.5 Desktop - Video Composition (Frames/s)	14.637 vs 6.001
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	20.86 vs 10.814
GFXBench 4.0 - Manhattan (Frames)	2375 vs 1405
GFXBench 4.0 - T-Rex (Frames)	3328 vs 2543
GFXBench 4.0 - Manhattan (Fps)	2375 vs 1405
GFXBench 4.0 - T-Rex (Fps)	3328 vs 2543

Reasons to consider the AMD Radeon HD 6490M

Around 80% higher memory clock speed: 3200 MHz vs 1782 MHz
Around 76% better performance in PassMark - G2D Mark: 514 vs 292
Around 30% better performance in Geekbench - OpenCL: 4866 vs 3754

Specifications (specs)
Memory clock speed	3200 MHz vs 1782 MHz
Benchmarks
PassMark - G2D Mark	514 vs 292
Geekbench - OpenCL	4866 vs 3754

Compare benchmarks

GPU 1: NVIDIA GeForce GT 640
GPU 2: AMD Radeon HD 6490M

PassMark - G3D Mark

GPU 1

GPU 2

1177

378

PassMark - G2D Mark

GPU 1

GPU 2

292

514

Geekbench - OpenCL

GPU 1

GPU 2

3754

4866

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

GPU 1

GPU 2

11.448

2.554

CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)

GPU 1

GPU 2

206.777

96.344

CompuBench 1.5 Desktop - Video Composition (Frames/s)

GPU 1

GPU 2

14.637

6.001

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

GPU 1

GPU 2

20.86

10.814

GFXBench 4.0 - Manhattan (Frames)

GPU 1

GPU 2

2375

1405

GFXBench 4.0 - T-Rex (Frames)

GPU 1

GPU 2

3328

2543

GFXBench 4.0 - Manhattan (Fps)

GPU 1

GPU 2

2375

1405

GFXBench 4.0 - T-Rex (Fps)

GPU 1

GPU 2

3328

2543

Name	NVIDIA GeForce GT 640	AMD Radeon HD 6490M
PassMark - G3D Mark	1177	378
PassMark - G2D Mark	292	514
Geekbench - OpenCL	3754	4866
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	11.448	2.554
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	206.777	96.344
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.792	0
CompuBench 1.5 Desktop - Video Composition (Frames/s)	14.637	6.001
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	20.86	10.814
GFXBench 4.0 - Car Chase Offscreen (Frames)	2134
GFXBench 4.0 - Manhattan (Frames)	2375	1405
GFXBench 4.0 - T-Rex (Frames)	3328	2543
GFXBench 4.0 - Car Chase Offscreen (Fps)	2134
GFXBench 4.0 - Manhattan (Fps)	2375	1405
GFXBench 4.0 - T-Rex (Fps)	3328	2543
3DMark Fire Strike - Graphics Score	1565

Compare specifications (specs)

	NVIDIA GeForce GT 640	AMD Radeon HD 6490M
Essentials
Architecture	Kepler	TeraScale 2
Code name	GK107	Seymour
Launch date	5 June 2012	4 January 2011
Launch price (MSRP)	$99	$1,193.03
Place in performance rating	1192	1193
Price now	$59.99	$1,193.03
Type	Desktop	Laptop
Value for money (0-100)	25.25	0.39
Technical info
Core clock speed	902 MHz	800 MHz
Floating-point performance	692.7 gflops	256 gflops
Manufacturing process technology	28 nm	40 nm
Pipelines	384	160
Texture fill rate	28.86 GTexel / s	6.4 GTexel / s
Thermal Design Power (TDP)	65 Watt
Transistor count	1,270 million	370 million
Video outputs and ports
Display Connectors	1x DVI, 1x HDMI, 1x DisplayPort	No outputs
Compatibility, dimensions and requirements
Interface	PCIe 3.0 x16	PCIe 2.0 x16
Length	145 mm
Supplementary power connectors	None
API support
DirectX	12.0 (11_0)	11.2 (11_0)
OpenGL	4.6	4.4
Memory
Maximum RAM amount	2 GB	512 MB
Memory bandwidth	28.51 GB / s	25.6 GB / s
Memory bus width	128 Bit	64 Bit
Memory clock speed	1782 MHz	3200 MHz
Memory type	DDR3	DDR3 / GDDR5
Shared memory		0