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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 clock speed 900 MHz vs 602 MHz Around 50% higher clock speed
Higher effective memory clock speed 4,104 MHz vs 2,214 MHz More than 85% higher effective memory clock speed
Significantly lower TDP 116W vs 236W 2x lower TDP
Front view of GeForce GTX 280

Reasons to consider the
Nvidia GeForce GTX 280

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Higher memory bandwidth 141.7 GB/s vs 98.5 GB/s Around 45% higher memory bandwidth
Higher pixel rate 19.3 GPixel/s vs 7.2 GPixel/s Around 2.8x higher pixel rate
Higher texture rate 48.2 GTexel/s vs 28.8 GTexel/s More than 65% higher texture rate
More texture mapping units 80 vs 32 48 more texture mapping units
Slightly more render output processors 32 vs 24 8 more render output processors
Wider memory bus 512 bit vs 192 bit Around 2.8x wider memory bus

Benchmarks Real world tests of GeForce GTX 550 Ti vs 280

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Features Key features of the GeForce GTX 550 Ti  vs 280 

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

GeForce GTX 550 Ti
98.5 GB/s
GeForce GTX 280
141.7 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 GTX 280
19.3 GPixel/s

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

GeForce GTX 550 Ti
28.8 GTexel/s
GeForce GTX 280
48.2 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTX 550 Ti
691.2 GFLOPS
GeForce GTX 280
622.1 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

Reviews Word on the street

GeForce GTX 550 Ti  vs 280 

2D IdleVideo Playback3D PerformanceCore Clock300 MHz400 MHz700 MHzMemory Clock100 MHz300 MHz1150 MHzShader Clock600 MHz800 MHz1400 MHzGPU Voltage1.03 V1.06 V1.18 VThe load detection is not dependant on 3D fullscreen, but on actual GPU usage.
GeForce GTX 280


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