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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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Significantly higher memory bandwidth 159 GB/s vs 57.6 GB/s More than 2.8x higher memory bandwidth
Higher effective memory clock speed 2,484 MHz vs 1,800 MHz Around 40% higher effective memory clock speed
Much wider memory bus 512 bit vs 256 bit 2x wider memory bus
More render output processors 32 vs 16 Twice as many render output processors
Higher pixel rate 20.74 GPixel/s vs 9.6 GPixel/s Around 2.2x higher pixel rate
Higher texture rate 51.84 GTexel/s vs 33.6 GTexel/s Around 55% higher texture rate
Significantly higher memory clock speed 1,242 MHz vs 900 MHz Around 40% higher memory clock speed
More texture mapping units 80 vs 56 24 more texture mapping units
Front view of GeForce GT 8800 Mac

Reasons to consider the
Nvidia GeForce GT 8800 Mac

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Lower TDP 125W vs 204W Around 40% lower TDP

Features Key features of the GeForce GTX 285 Mac  vs GT 8800 Mac 

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 8800 Mac
9.6 GPixel/s

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

GeForce GTX 285 Mac
51.84 GTexel/s
GeForce GT 8800 Mac
33.6 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTX 285 Mac
708.5 GFLOPS
GeForce GT 8800 Mac
336 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 8800 Mac 
GPU brand Nvidia Nvidia
GPU name GT200 B3 G92
Market Desktop Desktop
Clock speed 648 MHz 600 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 240 112
Texture mapping units 80 56
Render output processors 32 16
Pixel rate 20.74 GPixel/s 9.6 GPixel/s
Texture rate 51.84 GTexel/s 33.6 GTexel/s
Floating-point performance 708.5 GFLOPS 336 GFLOPS

memory

GeForce GTX 285 Mac  vs
GT 8800 Mac 
Memory clock speed 1,242 MHz 900 MHz
Effective memory clock speed 2,484 MHz 1,800 MHz
Memory bus 512 bit 256 bit
Memory 1,024 MB 512 MB
Memory type GDDR3 GDDR3
Memory bandwidth 159 GB/s 57.6 GB/s

noise and power

TDP 204W 125W

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