AMD Radeon HD 6490M vs ATI Radeon HD 3870 X2

Comparative analysis of AMD Radeon HD 6490M and ATI Radeon HD 3870 X2 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 - Manhattan (Frames), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Fps).

AMD Radeon HD 6490M

ATI Radeon HD 3870 X2

Differences

Reasons to consider the AMD Radeon HD 6490M

Videocard is newer: launch date 2 year(s) 11 month(s) later
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 40 nm vs 55 nm
Around 78% higher memory clock speed: 3200 MHz vs 1802 MHz
4.4x better performance in PassMark - G2D Mark: 514 vs 117

Specifications (specs)
Launch date	4 January 2011 vs 26 January 2008
Manufacturing process technology	40 nm vs 55 nm
Memory clock speed	3200 MHz vs 1802 MHz
Benchmarks
PassMark - G2D Mark	514 vs 117

Reasons to consider the ATI Radeon HD 3870 X2

Around 3% higher core clock speed: 825 MHz vs 800 MHz
33.3x more texture fill rate: 2x 13.2 GTexel / s billion / sec vs 6.4 GTexel / s
4x more pipelines: 2x 320 vs 160
4.1x better floating-point performance: 2x 528.0 gflops vs 256 gflops
2x more maximum memory size: 2x 512 MB vs 512 MB
Around 55% better performance in PassMark - G3D Mark: 587 vs 378
Around 31% better performance in GFXBench 4.0 - T-Rex (Frames): 3336 vs 2543
Around 31% better performance in GFXBench 4.0 - T-Rex (Fps): 3336 vs 2543

Specifications (specs)
Core clock speed	825 MHz vs 800 MHz
Texture fill rate	2x 13.2 GTexel / s billion / sec vs 6.4 GTexel / s
Pipelines	2x 320 vs 160
Floating-point performance	2x 528.0 gflops vs 256 gflops
Maximum memory size	2x 512 MB vs 512 MB
Benchmarks
PassMark - G3D Mark	587 vs 378
GFXBench 4.0 - T-Rex (Frames)	3336 vs 2543
GFXBench 4.0 - T-Rex (Fps)	3336 vs 2543

Compare benchmarks

GPU 1: AMD Radeon HD 6490M
GPU 2: ATI Radeon HD 3870 X2

PassMark - G3D Mark

GPU 1

GPU 2

378

587

PassMark - G2D Mark

GPU 1

GPU 2

514

117

GFXBench 4.0 - T-Rex (Frames)

GPU 1

GPU 2

2543

3336

GFXBench 4.0 - T-Rex (Fps)

GPU 1

GPU 2

2543

3336

Name	AMD Radeon HD 6490M	ATI Radeon HD 3870 X2
PassMark - G3D Mark	378	587
PassMark - G2D Mark	514	117
Geekbench - OpenCL	4866
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	2.554
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	96.344
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0
CompuBench 1.5 Desktop - Video Composition (Frames/s)	6.001
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	10.814
GFXBench 4.0 - Manhattan (Frames)	1405
GFXBench 4.0 - T-Rex (Frames)	2543	3336
GFXBench 4.0 - Manhattan (Fps)	1405
GFXBench 4.0 - T-Rex (Fps)	2543	3336

Compare specifications (specs)

	AMD Radeon HD 6490M	ATI Radeon HD 3870 X2
Essentials
Architecture	TeraScale 2	TeraScale
Code name	Seymour	R680
Launch date	4 January 2011	26 January 2008
Launch price (MSRP)	$1,193.03	$449
Place in performance rating	1208	1211
Price now	$1,193.03
Type	Laptop	Desktop
Value for money (0-100)	0.39
Technical info
Core clock speed	800 MHz	825 MHz
Floating-point performance	256 gflops	2x 528.0 gflops
Manufacturing process technology	40 nm	55 nm
Pipelines	160	2x 320
Texture fill rate	6.4 GTexel / s	2x 13.2 GTexel / s billion / sec
Transistor count	370 million	666 million
Thermal Design Power (TDP)		165 Watt
Video outputs and ports
Display Connectors	No outputs	2x DVI, 1x S-Video
Compatibility, dimensions and requirements
Interface	PCIe 2.0 x16	PCIe 2.0 x16
Length		267 mm
Supplementary power connectors		1x 6-pin + 1x 8-pin
API support
DirectX	11.2 (11_0)	10.1
OpenGL	4.4	3.3
Memory
Maximum RAM amount	512 MB	2x 512 MB
Memory bandwidth	25.6 GB / s	2x 57.7 GB / s
Memory bus width	64 Bit	2x 256 Bit
Memory clock speed	3200 MHz	1802 MHz
Memory type	DDR3 / GDDR5	GDDR3
Shared memory	0