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Differences What are the advantages of each

Front view of Radeon HD 6490M

Reasons to consider the
AMD Radeon HD 6490M

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Better 3DMark 11 graphics score 5,571 vs 2,111.5 Around 2.8x better 3DMark 11 graphics score
Higher effective memory clock speed 3,200 MHz vs 1,800 MHz Around 80% higher effective memory clock speed
Front view of GeForce GT 650M

Reasons to consider the
Nvidia GeForce GT 650M

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Much better 3DMark06 score 13,514 vs 601 Around 22.5x better 3DMark06 score
Much higher dirt3 framerate 26 vs 9 Around 3x higher dirt3 framerate
Better 3DMark vantage graphics score 8,338 vs 2,000.5 Around 4.2x better 3DMark vantage graphics score
Higher texture rate 27.2 GTexel/s vs 6.4 GTexel/s Around 4.2x higher texture rate
More render output processors 16 vs 4 12 more render output processors
More texture mapping units 32 vs 8 24 more texture mapping units
Better particle simulation score 124.09 mInteraction/s vs 41.01 mInteraction/s More than 3x better particle simulation score
Wider memory bus 128 bit vs 64 bit 2x wider memory bus
More shading units 384 vs 160 224 more shading units
Higher memory clock speed 900 MHz vs 800 MHz Around 15% higher memory clock speed

Benchmarks Real world tests of Radeon HD 6490M vs GeForce GT 650M

3DMark 11 Graphics Industry standard benchmark that tests DirectX 11 GPU performance

Bitcoin mining Data courtesy CompuBench

Radeon HD 6490M
10.81 mHash/s
GeForce GT 650M
22.46 mHash/s

Face detection Data courtesy CompuBench

Radeon HD 6490M
2.55 mPixels/s
GeForce GT 650M
9.87 mPixels/s

Ocean surface simulation Data courtesy CompuBench

Radeon HD 6490M
96.4 frames/s
GeForce GT 650M
341.05 frames/s

Particle simulation Data courtesy CompuBench

Radeon HD 6490M
41.01 mInteraction/s
GeForce GT 650M
124.09 mInteraction/s

T-Rex (Compubench 1.5) Data courtesy CompuBench

Radeon HD 6490M
-1 frames/s
GeForce GT 650M
0.98 frames/s

Video composition Data courtesy CompuBench

Radeon HD 6490M
6 frames/s
GeForce GT 650M
18.57 frames/s

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