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Differences What are the advantages of each

Front view of GeForce GTX 675MX Mac

Reasons to consider the
Nvidia GeForce GTX 675MX Mac

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Higher memory bandwidth 160 GB/s vs 86.4 GB/s More than 85% higher memory bandwidth
Better floating-point performance 1,932.7 GFLOPS vs 752.6 GFLOPS More than 2.5x better floating-point performance
Higher texture rate 80.5 GTexel/s vs 31.36 GTexel/s More than 2.5x higher texture rate
Significantly more texture mapping units 112 vs 32 80 more texture mapping units
Significantly more shading units 1,344 vs 384 960 more shading units
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
Better T-Rex score 2.1 frames/s vs 1.29 frames/s More than 60% better T-Rex score
Front view of GeForce GT 755M

Reasons to consider the
Nvidia GeForce GT 755M

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Significantly higher clock speed 980 MHz vs 719 MHz More than 35% higher clock speed
More memory 2,048 MB vs 1,024 MB 2x more memory
Higher memory clock speed 1,350 MHz vs 1,250 MHz Around 10% higher memory clock speed
Lower TDP 50W vs 100W 2x lower TDP

Benchmarks Real world tests of GeForce GTX 675MX Mac vs GT 755M

Face detection Data courtesy CompuBench

GeForce GTX 675MX Mac
22.66 mPixels/s
GeForce GT 755M
12.45 mPixels/s

Ocean surface simulation Data courtesy CompuBench

GeForce GTX 675MX Mac
-1 frames/s
GeForce GT 755M
455.8 frames/s

T-Rex (Compubench 1.5) Data courtesy CompuBench

GeForce GTX 675MX Mac
2.1 frames/s
GeForce GT 755M
1.29 frames/s

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