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Differences What are the advantages of each

Front view of Mobility Radeon HD 4850 X2

Reasons to consider the
ATi Mobility Radeon HD 4850 X2

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Is dual GPU Yes vs No About half of graphics cards are dual GPU
Higher memory bandwidth 179.2 GB/s vs 73.6 GB/s Around 2.5x higher memory bandwidth
Significantly more shading units 1,600 vs 128 1472 more shading units
Better floating-point performance 1,600 GFLOPS vs 483.8 GFLOPS More than 3.2x better floating-point performance
Slightly more memory 2,048 MB vs 1,024 MB 2x more memory
More render output processors 32 vs 16 Twice as many render output processors
Wider memory bus 512 bit vs 256 bit 2x wider memory bus
Front view of GeForce GTS 250

Reasons to consider the
ZOTAC GeForce GTS 250

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Higher clock speed 750 MHz vs 500 MHz 50% higher clock speed
Higher memory clock speed 1,150 MHz vs 700 MHz Around 65% higher memory clock speed

Features Key features of the Mobility Radeon HD 4850 X2  vs GeForce GTS 250 

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

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

floating point performance How fast the gpu can crunch numbers

GeForce GTS 250
483.8 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

Specifications Full list of technical specs

gpu

Mobility Radeon HD 4850 X2  vs
GeForce GTS 250 
GPU brand ATI Nvidia
GPU name M98 G92 B1
Market Laptop Desktop
Clock speed 500 MHz 750 MHz
Is dual GPU Yes No
Reference card None Nvidia GeForce GTS 250 702 MHz 1 GB

raw performance

Shading units 1,600 128
Texture mapping units 80 64
Render output processors 32 16
Pixel rate 16 GPixel/s 12 GPixel/s
Texture rate 40 GTexel/s 48 GTexel/s
Floating-point performance 1,600 GFLOPS 483.8 GFLOPS

memory

Mobility Radeon HD 4850 X2  vs
GeForce GTS 250 
Memory clock speed 700 MHz 1,150 MHz
Effective memory clock speed 2,800 MHz 2,300 MHz
Memory bus 512 bit 256 bit
Memory 2,048 MB 1,024 MB
Memory type GDDR5 GDDR3
Memory bandwidth 179.2 GB/s 73.6 GB/s

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