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Differences What are the advantages of each

Front view of GeForce GTX 550 Ti

Reasons to consider the
Nvidia GeForce GTX 550 Ti

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Much higher effective memory clock speed 4,104 MHz vs 1,200 MHz Around 3.5x higher effective memory clock speed
Higher clock speed 900 MHz vs 589 MHz Around 55% higher clock speed
Significantly higher memory bandwidth 98.5 GB/s vs 9.6 GB/s More than 10.2x higher memory bandwidth
Better PassMark score 1,926 vs 191 More than 10x better PassMark score
More render output processors 24 vs 4 20 more render output processors
Better floating-point performance 691.2 GFLOPS vs 44.86 GFLOPS Around 15.5x better floating-point performance
Higher texture rate 28.8 GTexel/s vs 4.71 GTexel/s More than 6x higher texture rate
Significantly higher memory clock speed 1,026 MHz vs 600 MHz More than 70% higher memory clock speed
Wider memory bus 192 bit vs 64 bit 3x wider memory bus
More texture mapping units 32 vs 8 24 more texture mapping units
Front view of GeForce 505

Reasons to consider the
Nvidia GeForce 505

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Significantly lower TDP 25W vs 116W 4.6x lower TDP

Benchmarks Real world tests of GeForce GTX 550 Ti vs 505

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Features Key features of the GeForce GTX 550 Ti  vs 505 

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

GeForce GTX 550 Ti
98.5 GB/s
GeForce 505
9.6 GB/s

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

GeForce GTX 550 Ti
7.2 GPixel/s
GeForce 505
2.36 GPixel/s

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

GeForce GTX 550 Ti
28.8 GTexel/s
GeForce 505
4.71 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTX 550 Ti
691.2 GFLOPS
GeForce 505
44.86 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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