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Differences What are the advantages of each

Front view of Radeon HD 4670

Reasons to consider the
ATi Radeon HD 4670

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Higher clock speed 750 MHz vs 600 MHz 25% higher clock speed
Higher effective memory clock speed 1,600 MHz vs 800 MHz 2x higher effective memory clock speed
Significantly higher memory clock speed 800 MHz vs 400 MHz 2x higher memory clock speed
Front view of Radeon HD 4650 AGP

Reasons to consider the
ATi Radeon HD 4650 AGP

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Slightly lower TDP 48W vs 59W Around 20% lower TDP

Benchmarks Real world tests of Radeon HD 4670 vs 4650 AGP

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Features Key features of the Radeon HD 4670  vs 4650 AGP 

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

Radeon HD 4670
25.6 GB/s
Radeon HD 4650 AGP
12.8 GB/s

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

Radeon HD 4670
6 GPixel/s
Radeon HD 4650 AGP
4.8 GPixel/s

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

Radeon HD 4670
24 GTexel/s
Radeon HD 4650 AGP
19.2 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 4670
480 GFLOPS
Radeon HD 4650 AGP
384 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

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