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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 pixel rate 12.8 GPixel/s vs 6.4 GPixel/s 2x higher pixel rate
More render output processors 16 vs 8 Twice as many render output processors
Better CLBenchmark raytrace score 87,085 vs 56,993 Around 55% better CLBenchmark raytrace score
Front view of Radeon HD 7730

Reasons to consider the
AMD Radeon HD 7730

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GPUBoss is not aware of any important advantages of the 7730 vs the 7750.

Benchmarks Real world tests of Radeon HD 7750 vs 7730

CLBenchmark Raytrace Measures compute performance using OpenCL to do raytracing

Features Key features of the Radeon HD 7750  vs 7730 

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

Radeon HD 7750
72 GB/s
Radeon HD 7730
72 GB/s
GPU Temperature ComparisonIdleLoadHIS HD 7750 IceQ X Turbo29°C50°CHIS HD 7750 iCooler34°C65°CASUS HD 775029°C58°CClub3D HD 775046°C76°C Important: GPU temperature will vary depending on clock speed, voltage settings, cooler design, and production variances.
Radeon HD 7750 | by techPowerUp! (Nov, 2012)

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

Radeon HD 7750
12.8 GPixel/s
Radeon HD 7730
6.4 GPixel/s
You may combine up to two HD 7750 cards from any vendor in a multi-GPU CrossFire configuration for higher framerates or better image quality settings.
Radeon HD 7750 | by techPowerUp! (Feb, 2012)

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

Radeon HD 7750
25.6 GTexel/s
Radeon HD 7730
19.2 GTexel/s
G HL225DBB 21.5" 1920x1080 Benchmark scores in other reviews are only comparable whenever this exact same configuration is used.
Radeon HD 7750 | by techPowerUp! (Nov, 2012)

floating point performance How fast the gpu can crunch numbers

Radeon HD 7750
819.2 GFLOPS
Radeon HD 7730
614.4 GFLOPS

shading units Subcomponents of the gpu, these run in parallel to enable fast pixel shading

AMD's Cape Verde graphics processor uses the GCN shader architecture, it is also the second GPU to be produced on a 28 nm process at TSMC.
Radeon HD 7750 | by techPowerUp! (Aug, 2012)

texture mapping units Built into each gpu, these resize and rotate bitmaps for texturing scenes

The graphic card features 384 stream processors with 16 ROPs and 24 TMUs and is essentially a cut down variant of the Cape Verde GPU hence called “Cape Verde LE.
Radeon HD 7730 | by hassan-mujtaba (Jul, 2013)

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