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Differences What are the advantages of each

Front view of GeForce GTX 260

Reasons to consider the
Nvidia GeForce GTX 260

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Significantly higher memory bandwidth 112.9 GB/s vs 8 GB/s More than 14x higher memory bandwidth
Higher effective memory clock speed 2,016 MHz vs 1,000 MHz More than 2x higher effective memory clock speed
More memory 1,792 MB vs 512 MB 3.5x more memory
Much wider memory bus 448 bit vs 64 bit 7x wider memory bus
Significantly more render output processors 28 vs 4 24 more render output processors
Significantly more texture mapping units 64 vs 8 56 more texture mapping units
Higher texture rate 33.15 GTexel/s vs 4.16 GTexel/s Around 8x higher texture rate
Higher pixel rate 14.5 GPixel/s vs 2.08 GPixel/s Around 7x higher pixel rate
Significantly higher memory clock speed 1,008 MHz vs 500 MHz More than 2x higher memory clock speed
Front view of GeForce 8400 GS PCI

Reasons to consider the
SPARKLE GeForce 8400 GS PCI

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Much lower TDP 40W vs 182W 4.6x lower TDP

Features Key features of the GeForce GTX 260  vs 8400 GS PCI 

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 260
14.5 GPixel/s
GeForce 8400 GS PCI
2.08 GPixel/s

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

GeForce GTX 260
33.15 GTexel/s
GeForce 8400 GS PCI
4.16 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTX 260
414.7 GFLOPS
GeForce 8400 GS PCI
39.36 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 260  vs
8400 GS PCI 
GPU brand Nvidia Nvidia
GPU name GT200B G86
Market Desktop Desktop
Clock speed 518 MHz 520 MHz
Is dual GPU No No
Reference card Nvidia GeForce GTX 260 576 MHz 896 MB Nvidia GeForce 8400 GS PCI 520 MHz 512 MB

raw performance

Shading units 192 16
Texture mapping units 64 8
Render output processors 28 4
Pixel rate 14.5 GPixel/s 2.08 GPixel/s
Texture rate 33.15 GTexel/s 4.16 GTexel/s
Floating-point performance 414.7 GFLOPS 39.36 GFLOPS

memory

GeForce GTX 260  vs
8400 GS PCI 
Memory clock speed 1,008 MHz 500 MHz
Effective memory clock speed 2,016 MHz 1,000 MHz
Memory bus 448 bit 64 bit
Memory 1,792 MB 512 MB
Memory type GDDR3 DDR3
Memory bandwidth 112.9 GB/s 8 GB/s

noise and power

TDP 182W 40W

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