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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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Much higher clock speed 1,020 MHz vs 500 MHz More than 2x higher clock speed
Higher effective memory clock speed 5,012 MHz vs 3,200 MHz More than 55% higher effective memory clock speed
Better floating-point performance 1,305.6 GFLOPS vs 240 GFLOPS Around 5.5x better floating-point performance
More memory 2,048 MB vs 1,024 MB 2x more memory
Higher memory bandwidth 80.2 GB/s vs 51.2 GB/s More than 55% higher memory bandwidth
Higher pixel rate 16.32 GPixel/s vs 4 GPixel/s More than 4x higher pixel rate
Higher texture rate 40.8 GTexel/s vs 16 GTexel/s More than 2.5x higher texture rate
Significantly higher memory clock speed 1,253 MHz vs 800 MHz More than 55% higher memory clock speed
More shading units 640 vs 96 544 more shading units
More render output processors 16 vs 8 Twice as many render output processors
Slightly better T-Rex score 3,363.28 vs 3,354.5 Almost the same
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

GeForce GTX 860M
80.2 GB/s
GeForce GTS 250M
51.2 GB/s

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

GeForce GTX 860M
16.32 GPixel/s
GeForce GTS 250M
4 GPixel/s

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

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

floating point performance How fast the gpu can crunch numbers

GeForce GTX 860M
1,305.6 GFLOPS
GeForce GTS 250M

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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