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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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Much higher effective memory clock speed 4,500 MHz vs 800 MHz Around 5.8x higher effective memory clock speed
Higher clock speed 800 MHz vs 600 MHz Around 35% higher clock speed
Significantly higher memory bandwidth 72 GB/s vs 6.4 GB/s Around 11.2x higher memory bandwidth
Much higher memory clock speed 1,125 MHz vs 400 MHz More than 2.8x higher memory clock speed
Better floating-point performance 819.2 GFLOPS vs 96 GFLOPS More than 8.5x better floating-point performance
Higher pixel rate 12.8 GPixel/s vs 2.4 GPixel/s More than 5.2x higher pixel rate
Higher texture rate 25.6 GTexel/s vs 4.8 GTexel/s More than 5.2x higher texture rate
More render output processors 16 vs 4 12 more render output processors
More shading units 512 vs 80 432 more shading units
More texture mapping units 32 vs 8 24 more texture mapping units
More compute units 8 vs 1 7 more compute units
Wider memory bus 128 bit vs 64 bit 2x wider memory bus
Front view of Radeon HD 4520

Reasons to consider the
ATi Radeon HD 4520

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Lower TDP 25W vs 55W 2.2x lower TDP

Features Key features of the Radeon HD 7750  vs 4520 

memory bandwidth Rate at which data can be read from or stored in onboard memory

Radeon HD 7750
72 GB/s
Radeon HD 4520
6.4 GB/s

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

Radeon HD 7750
12.8 GPixel/s
Radeon HD 4520
2.4 GPixel/s

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

Radeon HD 7750
25.6 GTexel/s
Radeon HD 4520
4.8 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 7750
819.2 GFLOPS
Radeon HD 4520
96 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
4520 
GPU brand AMD ATI
GPU name Cape Verde PRO RV710
Market Desktop Desktop
Clock speed 800 MHz 600 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 512 80
Texture mapping units 32 8
Render output processors 16 4
Compute units 8 1
Pixel rate 12.8 GPixel/s 2.4 GPixel/s
Texture rate 25.6 GTexel/s 4.8 GTexel/s
Floating-point performance 819.2 GFLOPS 96 GFLOPS

memory

Radeon HD 7750  vs
4520 
Memory clock speed 1,125 MHz 400 MHz
Effective memory clock speed 4,500 MHz 800 MHz
Memory bus 128 bit 64 bit
Memory 1,024 MB 512 MB
Memory type GDDR5 DDR2
Memory bandwidth 72 GB/s 6.4 GB/s

noise and power

TDP 55W 25W

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