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Differences What are the advantages of each

Front view of Radeon HD 4650 AGP

Reasons to consider the
ATi Radeon HD 4650 AGP

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More texture mapping units 32 vs 8 24 more texture mapping units
Slightly more shading units 320 vs 120 200 more shading units
Slightly lower TDP 48W vs 65W More than 25% lower TDP
Front view of Radeon HD 3650 AGP

Reasons to consider the
ATi Radeon HD 3650 AGP

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Higher clock speed 725 MHz vs 600 MHz More than 20% higher clock speed
Higher memory clock speed 500 MHz vs 400 MHz 25% higher memory clock speed

Benchmarks Real world tests of Radeon HD 4650 AGP vs 3650 AGP

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Features Key features of the Radeon HD 4650 AGP  vs 3650 AGP 

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 4650 AGP
4.8 GPixel/s
Radeon HD 3650 AGP
2.9 GPixel/s

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

Radeon HD 4650 AGP
19.2 GTexel/s
Radeon HD 3650 AGP
5.8 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 4650 AGP
384 GFLOPS
Radeon HD 3650 AGP
174 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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