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Differences What are the advantages of each

Front view of GeForce GTX 285 Mac

Reasons to consider the
Nvidia GeForce GTX 285 Mac

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Higher memory bandwidth 159 GB/s vs 64 GB/s Around 2.5x higher memory bandwidth
Higher pixel rate 20.74 GPixel/s vs 7.53 GPixel/s More than 2.8x higher pixel rate
More texture mapping units 80 vs 32 48 more texture mapping units
More render output processors 32 vs 16 Twice as many render output processors
Wider memory bus 512 bit vs 128 bit 4x wider memory bus
Higher memory clock speed 1,242 MHz vs 1,000 MHz Around 25% higher memory clock speed
Front view of GeForce GT 750M

Reasons to consider the
Nvidia GeForce GT 750M

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Higher clock speed 941 MHz vs 648 MHz More than 45% higher clock speed
Higher effective memory clock speed 4,000 MHz vs 2,484 MHz More than 60% higher effective memory clock speed
Slightly more memory 2,048 MB vs 1,024 MB 2x more memory
Significantly lower TDP 50W vs 204W 4.1x lower TDP

Features Key features of the GeForce GTX 285 Mac  vs GT 750M 

memory bandwidth Rate at which data can be read from or stored in onboard memory

pixel rate Number of pixels a graphics card can render to the screen every second

GeForce GTX 285 Mac
20.74 GPixel/s
GeForce GT 750M
7.53 GPixel/s

texture rate Speed at which a graphics card can perform texture mapping

GeForce GTX 285 Mac
51.84 GTexel/s
GeForce GT 750M
30.11 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTX 285 Mac
708.5 GFLOPS
GeForce GT 750M
722.7 GFLOPS

shading units Subcomponents of the gpu, these run in parallel to enable fast pixel shading

texture mapping units Built into each gpu, these resize and rotate bitmaps for texturing scenes

Specifications Full list of technical specs

gpu

GeForce GTX 285 Mac  vs
GT 750M 
GPU brand Nvidia Nvidia
GPU name GT200 B3 GK107
Market Desktop Laptop
Clock speed 648 MHz 941 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 240 384
Texture mapping units 80 32
Render output processors 32 16
Pixel rate 20.74 GPixel/s 7.53 GPixel/s
Texture rate 51.84 GTexel/s 30.11 GTexel/s
Floating-point performance 708.5 GFLOPS 722.7 GFLOPS

memory

GeForce GTX 285 Mac  vs
GT 750M 
Memory clock speed 1,242 MHz 1,000 MHz
Effective memory clock speed 2,484 MHz 4,000 MHz
Memory bus 512 bit 128 bit
Memory 1,024 MB 2,048 MB
Memory type GDDR3 GDDR5
Memory bandwidth 159 GB/s 64 GB/s

noise and power

TDP 204W 50W

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