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Differences What are the advantages of each

Front view of GeForce GT 9400

Reasons to consider the
Nvidia GeForce GT 9400

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Lower TDP 50W vs 75W Around 35% lower TDP
Front view of GeForce GT 130 Mac

Reasons to consider the
Nvidia GeForce GT 130 Mac

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Higher effective memory clock speed 1,584 MHz vs 800 MHz Around 2x higher effective memory clock speed
Higher memory bandwidth 38.02 GB/s vs 12.8 GB/s Around 3x higher memory bandwidth
Significantly higher memory clock speed 792 MHz vs 400 MHz Around 2x higher memory clock speed
More render output processors 12 vs 4 Three times as many render output processors
More texture mapping units 24 vs 8 Three times as many texture mapping units
Wider memory bus 192 bit vs 128 bit 50% wider memory bus

Features Key features of the GeForce GT 9400  vs 130 Mac 

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

GeForce GT 9400
12.8 GB/s
GeForce GT 130 Mac
38.02 GB/s

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

GeForce GT 9400
2.2 GPixel/s
GeForce GT 130 Mac
7.2 GPixel/s

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

GeForce GT 9400
4.4 GTexel/s
GeForce GT 130 Mac
14.4 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GT 9400
44.8 GFLOPS
GeForce GT 130 Mac
144 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 9400  vs
130 Mac 
GPU brand Nvidia Nvidia
GPU name G96 C1 G94 B1
Market Desktop Desktop
Clock speed 550 MHz 600 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 16 48
Texture mapping units 8 24
Render output processors 4 12
Pixel rate 2.2 GPixel/s 7.2 GPixel/s
Texture rate 4.4 GTexel/s 14.4 GTexel/s
Floating-point performance 44.8 GFLOPS 144 GFLOPS

memory

GeForce GT 9400  vs
130 Mac 
Memory clock speed 400 MHz 792 MHz
Effective memory clock speed 800 MHz 1,584 MHz
Memory bus 128 bit 192 bit
Memory 512 MB 512 MB
Memory type GDDR3 GDDR3
Memory bandwidth 12.8 GB/s 38.02 GB/s

noise and power

TDP 50W 75W

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