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Differences What are the advantages of each

Front view of Radeon HD 7750

Reasons to consider the
AMD Radeon HD 7750

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Higher clock speed 800 MHz vs 500 MHz 60% higher clock speed
Higher effective memory clock speed 4,500 MHz vs 2,800 MHz More than 60% higher effective memory clock speed
Higher memory clock speed 1,125 MHz vs 700 MHz More than 60% higher memory clock speed
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 72 GB/s Around 2.5x higher memory bandwidth
More shading units 1,600 vs 512 1088 more shading units
Slightly more memory 2,048 MB vs 1,024 MB 2x more memory
Slightly better floating-point performance 1,600 GFLOPS vs 819.2 GFLOPS More than 95% better floating-point performance
More texture mapping units 80 vs 32 48 more texture mapping units
More render output processors 32 vs 16 Twice as many render output processors
More compute units 20 vs 8 12 more compute units
Wider memory bus 512 bit vs 128 bit 4x wider memory bus

Features Key features of the Radeon HD 7750  vs Mobility Radeon HD 4850 X2 

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

Radeon HD 7750
12.8 GPixel/s

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

Radeon HD 7750
25.6 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 7750
819.2 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

Radeon HD 7750  vs
Mobility Radeon HD 4850 X2 
GPU brand AMD ATI
GPU name Cape Verde PRO M98
Market Desktop Laptop
Clock speed 800 MHz 500 MHz
Is dual GPU No Yes
Reference card None None

raw performance

Shading units 512 1,600
Texture mapping units 32 80
Render output processors 16 32
Compute units 8 20
Pixel rate 12.8 GPixel/s 16 GPixel/s
Texture rate 25.6 GTexel/s 40 GTexel/s
Floating-point performance 819.2 GFLOPS 1,600 GFLOPS

memory

Radeon HD 7750  vs
Mobility Radeon HD 4850 X2 
Memory clock speed 1,125 MHz 700 MHz
Effective memory clock speed 4,500 MHz 2,800 MHz
Memory bus 128 bit 512 bit
Memory 1,024 MB 2,048 MB
Memory type GDDR5 GDDR5
Memory bandwidth 72 GB/s 179.2 GB/s

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