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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
Significantly higher memory bandwidth 179.2 GB/s vs 40.1 GB/s Around 4.5x higher memory bandwidth
More shading units 1,600 vs 384 1216 more shading units
More render output processors 32 vs 8 24 more render output processors
Slightly more memory 2,048 MB vs 1,024 MB 2x more memory
More texture mapping units 80 vs 16 64 more texture mapping units
Better floating-point performance 1,600 GFLOPS vs 692.7 GFLOPS More than 2.2x better floating-point performance
Slightly higher pixel rate 16 GPixel/s vs 7.22 GPixel/s Around 2.2x higher pixel rate
Slightly higher texture rate 40 GTexel/s vs 14.43 GTexel/s More than 2.8x higher texture rate
Wider memory bus 512 bit vs 64 bit 8x wider memory bus
Front view of GeForce GT 730

Reasons to consider the
Nvidia GeForce GT 730

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Significantly higher clock speed 902 MHz vs 500 MHz More than 80% higher clock speed
Higher effective memory clock speed 5,012 MHz vs 2,800 MHz Around 80% higher effective memory clock speed
Significantly higher memory clock speed 1,253 MHz vs 700 MHz Around 80% higher memory clock speed

Features Key features of the Mobility Radeon HD 4850 X2  vs GeForce GT 730 

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 GT 730
7.22 GPixel/s

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

GeForce GT 730
14.43 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GT 730
692.7 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 GT 730 
GPU brand ATI Nvidia
GPU name M98 GK117
Market Laptop Desktop
Clock speed 500 MHz 902 MHz
Is dual GPU Yes No
Reference card None Nvidia GeForce GT 730 700 MHz 1 GB

raw performance

Shading units 1,600 384
Texture mapping units 80 16
Render output processors 32 8
Pixel rate 16 GPixel/s 7.22 GPixel/s
Texture rate 40 GTexel/s 14.43 GTexel/s
Floating-point performance 1,600 GFLOPS 692.7 GFLOPS

memory

Mobility Radeon HD 4850 X2  vs
GeForce GT 730 
Memory clock speed 700 MHz 1,253 MHz
Effective memory clock speed 2,800 MHz 5,012 MHz
Memory bus 512 bit 64 bit
Memory 2,048 MB 1,024 MB
Memory type GDDR5 GDDR5
Memory bandwidth 179.2 GB/s 40.1 GB/s

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