AMD Radeon R6 M255DX vs AMD Radeon HD 6490M

Comparative analysis of AMD Radeon R6 M255DX 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, Technologies. Benchmark videocards performance analysis: Geekbench - OpenCL, GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - T-Rex (Fps), PassMark - G2D Mark, PassMark - G3D Mark, 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).

AMD Radeon R6 M255DX

AMD Radeon HD 6490M

Differences

Reasons to consider the AMD Radeon R6 M255DX

Videocard is newer: launch date 3 year(s) 0 month(s) later
3.6x more pipelines: 576 vs 160
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 28 nm vs 40 nm
3.5x better performance in Geekbench - OpenCL: 17123 vs 4866
Around 37% better performance in GFXBench 4.0 - Manhattan (Frames): 1927 vs 1405
Around 37% better performance in GFXBench 4.0 - Manhattan (Fps): 1927 vs 1405
Around 40% better performance in GFXBench 4.0 - T-Rex (Frames): 3563 vs 2543
Around 40% better performance in GFXBench 4.0 - T-Rex (Fps): 3563 vs 2543
Around 60% better performance in PassMark - G3D Mark: 605 vs 378

Specifications (specs)
Launch date	7 January 2014 vs 4 January 2011
Pipelines	576 vs 160
Manufacturing process technology	28 nm vs 40 nm
Benchmarks
Geekbench - OpenCL	17123 vs 4866
GFXBench 4.0 - Manhattan (Frames)	1927 vs 1405
GFXBench 4.0 - Manhattan (Fps)	1927 vs 1405
GFXBench 4.0 - T-Rex (Frames)	3563 vs 2543
GFXBench 4.0 - T-Rex (Fps)	3563 vs 2543
PassMark - G3D Mark	605 vs 378

Reasons to consider the AMD Radeon HD 6490M

Around 3% higher core clock speed: 800 MHz vs 780 MHz
4.4x better performance in PassMark - G2D Mark: 514 vs 116

Specifications (specs)
Core clock speed	800 MHz vs 780 MHz
Benchmarks
PassMark - G2D Mark	514 vs 116

Compare benchmarks

GPU 1: AMD Radeon R6 M255DX
GPU 2: AMD Radeon HD 6490M

Geekbench - OpenCL

GPU 1

GPU 2

17123

4866

GFXBench 4.0 - Manhattan (Frames)

GPU 1

GPU 2

1927

1405

GFXBench 4.0 - Manhattan (Fps)

GPU 1

GPU 2

1927

1405

GFXBench 4.0 - T-Rex (Frames)

GPU 1

GPU 2

3563

2543

GFXBench 4.0 - T-Rex (Fps)

GPU 1

GPU 2

3563

2543

PassMark - G2D Mark

GPU 1

GPU 2

116

514

PassMark - G3D Mark

GPU 1

GPU 2

605

378

Name	AMD Radeon R6 M255DX	AMD Radeon HD 6490M
Geekbench - OpenCL	17123	4866
GFXBench 4.0 - Car Chase Offscreen (Frames)	1055
GFXBench 4.0 - Car Chase Offscreen (Fps)	1055
GFXBench 4.0 - Manhattan (Frames)	1927	1405
GFXBench 4.0 - Manhattan (Fps)	1927	1405
GFXBench 4.0 - T-Rex (Frames)	3563	2543
GFXBench 4.0 - T-Rex (Fps)	3563	2543
PassMark - G2D Mark	116	514
PassMark - G3D Mark	605	378
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

Compare specifications (specs)

	AMD Radeon R6 M255DX	AMD Radeon HD 6490M
Essentials
Architecture	GCN 1.0	TeraScale 2
Code name	Jet	Seymour
Launch date	7 January 2014	4 January 2011
Place in performance rating	1191	1194
Type	Laptop	Laptop
Launch price (MSRP)		$1,193.03
Price now		$1,193.03
Value for money (0-100)		0.39
Technical info
Boost clock speed	855 MHz
Core clock speed	780 MHz	800 MHz
Manufacturing process technology	28 nm	40 nm
Pipelines	576	160
Transistor count	1,040 million	370 million
Floating-point performance		256 gflops
Texture fill rate		6.4 GTexel / s
Video outputs and ports
Display Connectors	No outputs	No outputs
Compatibility, dimensions and requirements
Interface	IGP	PCIe 2.0 x16
Laptop size	medium sized
API support
DirectX	12.0 (11_1)	11.2 (11_0)
OpenGL	4.5	4.4
Memory
Memory type	DDR3	DDR3 / GDDR5
Shared memory	1	0
Maximum RAM amount		512 MB
Memory bandwidth		25.6 GB / s
Memory bus width		64 Bit
Memory clock speed		3200 MHz
Technologies
AMD Eyefinity
AppAcceleration
Enduro
Powerplay