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Differences What are the advantages of each

Front view of Radeon R9 M280X

Reasons to consider the
AMD Radeon R9 M280X

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Better 3DMark 11 graphics score 11,618 vs 5,645 More than 2x better 3DMark 11 graphics score
More memory 4,096 MB vs 2,048 MB 2x more memory
Higher effective memory clock speed 5,500 MHz vs 4,800 MHz Around 15% higher effective memory clock speed
Higher memory clock speed 1,375 MHz vs 1,200 MHz Around 15% higher memory clock speed
Front view of Radeon HD 7970M

Reasons to consider the
AMD Radeon HD 7970M

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Much better 3DMark06 score 22,370.5 vs 4,698 More than 4.8x better 3DMark06 score
Significantly better 3DMark vantage graphics score 21,507 vs 11,255 More than 90% better 3DMark vantage graphics score
Higher memory bandwidth 153.6 GB/s vs 88 GB/s Around 75% higher memory bandwidth
Much higher crysis 3 framerate 20.3 fps vs 13.1 fps Around 55% higher crysis 3 framerate
Higher pixel rate 27.2 GPixel/s vs 16 GPixel/s 70% higher pixel rate
More render output processors 32 vs 16 Twice as many render output processors
Significantly wider memory bus 256 bit vs 128 bit 2x wider memory bus
Higher metro: last light framerate 31 vs 19 Around 65% higher metro: last light framerate
More shading units 1,280 vs 896 384 more shading units
More texture mapping units 80 vs 56 24 more texture mapping units
Higher BioShock infinite framerate 43.7 fps vs 26.5 fps Around 65% higher BioShock infinite framerate
More compute units 20 vs 14 6 more compute units

Benchmarks Real world tests of Radeon R9 M280X vs HD 7970M

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

Battlefield 4

Bioshock Infinite

Crysis 3

Metro: Last Light

BioShock Infinite 1920 x 1080 - Ultra preset + DX11 (DDOF)

Radeon R9 M280X
26.5 fps
Radeon HD 7970M
43.7 fps

Crysis 3 1920 x 1080 - Very High preset + 16xAF + 2xSMAA

Radeon R9 M280X
13.1 fps
Radeon HD 7970M
20.3 fps

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