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Differences What are the advantages of each

Front view of GeForce GTX 470

Reasons to consider the
GIGABYTE GeForce GTX 470

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Higher effective memory clock speed 3,348 MHz vs 2,484 MHz Around 35% higher effective memory clock speed
Better floating-point performance 1,254 GFLOPS vs 708.5 GFLOPS More than 75% better floating-point performance
More render output processors 40 vs 32 8 more render output processors
Slightly more shading units 448 vs 240 208 more shading units
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 133.9 GB/s Around 20% higher memory bandwidth
Significantly wider memory bus 512 bit vs 320 bit 60% wider memory bus
Significantly higher memory clock speed 1,242 MHz vs 837 MHz Around 50% higher memory clock speed
More texture mapping units 80 vs 56 24 more texture mapping units

Features Key features of the GeForce GTX 470  vs 285 Mac 

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

GeForce GTX 470
133.9 GB/s

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

GeForce GTX 470
19.6 GPixel/s
GeForce GTX 285 Mac
20.74 GPixel/s

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

GeForce GTX 470
39.2 GTexel/s
GeForce GTX 285 Mac
51.84 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTX 470
1,254 GFLOPS
GeForce GTX 285 Mac
708.5 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 470  vs
285 Mac 
GPU brand Nvidia Nvidia
GPU name GF100 GT200 B3
Market Desktop Desktop
Clock speed 700 MHz 648 MHz
Is dual GPU No No
Reference card Nvidia GeForce GTX 470 608 MHz 1.2 GB None

raw performance

Shading units 448 240
Texture mapping units 56 80
Render output processors 40 32
Pixel rate 19.6 GPixel/s 20.74 GPixel/s
Texture rate 39.2 GTexel/s 51.84 GTexel/s
Floating-point performance 1,254 GFLOPS 708.5 GFLOPS

memory

GeForce GTX 470  vs
285 Mac 
Memory clock speed 837 MHz 1,242 MHz
Effective memory clock speed 3,348 MHz 2,484 MHz
Memory bus 320 bit 512 bit
Memory 1,280 MB 1,024 MB
Memory type GDDR5 GDDR3
Memory bandwidth 133.9 GB/s 159 GB/s

noise and power

TDP 215W 204W

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