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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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Much higher memory bandwidth 159 GB/s vs 28.8 GB/s More than 5.5x higher memory bandwidth
Higher effective memory clock speed 2,484 MHz vs 1,800 MHz Around 40% higher effective memory clock speed
Significantly more render output processors 32 vs 4 28 more render output processors
Much wider memory bus 512 bit vs 128 bit 4x wider memory bus
Significantly more texture mapping units 80 vs 16 64 more texture mapping units
Higher texture rate 51.84 GTexel/s vs 12.96 GTexel/s 4x higher texture rate
Higher pixel rate 20.74 GPixel/s vs 3.24 GPixel/s Around 6.5x higher pixel rate
Significantly higher memory clock speed 1,242 MHz vs 900 MHz Around 40% higher memory clock speed
Front view of GeForce GT 440

Reasons to consider the
Nvidia GeForce GT 440

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Higher clock speed 810 MHz vs 648 MHz 25% higher clock speed
Much lower TDP 65W vs 204W 3.1x lower TDP

Features Key features of the GeForce GTX 285 Mac  vs GT 440 

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

GeForce GT 440
28.8 GB/s

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 440
3.24 GPixel/s

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

GeForce GTX 285 Mac
51.84 GTexel/s
GeForce GT 440
12.96 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTX 285 Mac
708.5 GFLOPS
GeForce GT 440
311.04 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 440 
GPU brand Nvidia Nvidia
GPU name GT200 B3 GF108
Market Desktop Desktop
Clock speed 648 MHz 810 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 240 96
Texture mapping units 80 16
Render output processors 32 4
Pixel rate 20.74 GPixel/s 3.24 GPixel/s
Texture rate 51.84 GTexel/s 12.96 GTexel/s
Floating-point performance 708.5 GFLOPS 311.04 GFLOPS

memory

GeForce GTX 285 Mac  vs
GT 440 
Memory clock speed 1,242 MHz 900 MHz
Effective memory clock speed 2,484 MHz 1,800 MHz
Memory bus 512 bit 128 bit
Memory 1,024 MB 1,024 MB
Memory type GDDR3 DDR3
Memory bandwidth 159 GB/s 28.8 GB/s

noise and power

TDP 204W 65W

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