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Differences What are the advantages of each

Front view of GeForce GT 8800

Reasons to consider the
ASUS GeForce GT 8800

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Lower TDP 125W vs 197W More than 35% lower TDP
Front view of GeForce 9800 GX2

Reasons to consider the
XFX GeForce 9800 GX2

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Is dual GPU Yes vs No About half of graphics cards are dual GPU
Significantly higher memory bandwidth 134.4 GB/s vs 64.6 GB/s More than 2x higher memory bandwidth
Higher texture rate 89.6 GTexel/s vs 39.2 GTexel/s More than 2.2x higher texture rate
Significantly more texture mapping units 128 vs 56 72 more texture mapping units
Much wider memory bus 512 bit vs 256 bit 2x wider memory bus
More render output processors 32 vs 16 Twice as many render output processors
Higher pixel rate 22.4 GPixel/s vs 11.2 GPixel/s 2x higher pixel rate
Slightly better floating-point performance 870.4 GFLOPS vs 392 GFLOPS Around 2.2x better floating-point performance

Benchmarks Real world tests of GeForce GT 8800 vs 9800 GX2

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Features Key features of the GeForce GT 8800  vs 9800 GX2 

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

GeForce GT 8800
64.6 GB/s
GeForce 9800 GX2
134.4 GB/s

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

GeForce GT 8800
11.2 GPixel/s
GeForce 9800 GX2
22.4 GPixel/s

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

GeForce GT 8800
39.2 GTexel/s
GeForce 9800 GX2
89.6 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GT 8800
392 GFLOPS
GeForce 9800 GX2
870.4 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

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