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Differences What are the advantages of each

Front view of GeForce GT 330M Mac

Reasons to consider the
Nvidia GeForce GT 330M Mac

Report a correction
Slightly more texture mapping units 16 vs 8 Twice as many texture mapping units
Front view of GeForce GT 320M

Reasons to consider the
Nvidia GeForce GT 320M

Report a correction
Slightly more memory 1,024 MB vs 512 MB 2x more memory

Features Key features of the GeForce GT 330M Mac  vs 320M 

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

GeForce GT 330M Mac
25.28 GB/s
GeForce GT 320M
25.28 GB/s

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

GeForce GT 330M Mac
4 GPixel/s
GeForce GT 320M
4 GPixel/s

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

GeForce GT 330M Mac
8 GTexel/s
GeForce GT 320M
4 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GT 330M Mac
105.6 GFLOPS
GeForce GT 320M
52.8 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 GT 330M Mac  vs
320M 
GPU brand Nvidia Nvidia
GPU name GT216 GT216
Market Laptop Laptop
Clock speed 500 MHz 500 MHz
Is dual GPU No No
Reference card None Nvidia GeForce GT 320M 500 MHz 512 MB

raw performance

Shading units 48 24
Texture mapping units 16 8
Render output processors 8 8
Pixel rate 4 GPixel/s 4 GPixel/s
Texture rate 8 GTexel/s 4 GTexel/s
Floating-point performance 105.6 GFLOPS 52.8 GFLOPS

memory

GeForce GT 330M Mac  vs
320M 
Memory clock speed 790 MHz 790 MHz
Effective memory clock speed 1,580 MHz 1,580 MHz
Memory bus 128 bit 128 bit
Memory 512 MB 1,024 MB
Memory type GDDR3 DDR3
Memory bandwidth 25.28 GB/s 25.28 GB/s

noise and power

TDP 23W 23W

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