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Differences What are the advantages of each

Front view of GeForce GTX 860M

Reasons to consider the
Nvidia GeForce GTX 860M

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Significantly higher clock speed 797 MHz vs 500 MHz Around 60% higher clock speed
Better floating-point performance 1,836.3 GFLOPS vs 240 GFLOPS Around 7.8x better floating-point performance
Higher effective memory clock speed 5,000 MHz vs 3,200 MHz More than 55% higher effective memory clock speed
Significantly higher texture rate 76.5 GTexel/s vs 16 GTexel/s More than 4.8x higher texture rate
More memory 2,048 MB vs 1,024 MB 2x more memory
Significantly more shading units 1,152 vs 96 1056 more shading units
Significantly more texture mapping units 96 vs 32 Three times as many texture mapping units
Higher pixel rate 19.13 GPixel/s vs 4 GPixel/s More than 4.8x higher pixel rate
Higher memory bandwidth 80 GB/s vs 51.2 GB/s More than 55% higher memory bandwidth
Significantly higher memory clock speed 1,250 MHz vs 800 MHz More than 55% higher memory clock speed
More render output processors 16 vs 8 Twice as many render output processors
Front view of GeForce GTS 250M

Reasons to consider the
Nvidia GeForce GTS 250M

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Lower TDP 28W vs 75W 2.7x lower TDP

Benchmarks Real world tests of GeForce GTX 860M vs GTS 250M

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Features Key features of the GeForce GTX 860M  vs GTS 250M 

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 860M
19.13 GPixel/s
GeForce GTS 250M
4 GPixel/s

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

GeForce GTX 860M
76.5 GTexel/s
GeForce GTS 250M
16 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTX 860M
1,836.3 GFLOPS
GeForce GTS 250M
240 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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