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Differences What are the advantages of each

Front view of Radeon HD 4720

Reasons to consider the
ATi Radeon HD 4720

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Slightly more memory 1,024 MB vs 256 MB 4x more memory
Front view of Radeon HD 4650

Reasons to consider the
BIOSTAR Radeon HD 4650

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Slightly higher memory clock speed 700 MHz vs 667 MHz Around 5% higher memory clock speed
Slightly lower TDP 48W vs 55W Around 15% lower TDP

Features Key features of the Radeon HD 4720  vs 4650 

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

Radeon HD 4720
21.34 GB/s
Radeon HD 4650
22.4 GB/s

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

Radeon HD 4720
4.8 GPixel/s
Radeon HD 4650
4.8 GPixel/s

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

Radeon HD 4720
19.2 GTexel/s
Radeon HD 4650
19.2 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 4720
384 GFLOPS
Radeon HD 4650
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

Specifications Full list of technical specs

gpu

Radeon HD 4720  vs
4650 
GPU brand ATI ATI
GPU name RV730 RV730
Market Desktop Desktop
Clock speed 600 MHz 600 MHz
Is dual GPU No No
Reference card None ATi Radeon HD 4650 600 MHz 256 MB

raw performance

Shading units 320 320
Texture mapping units 32 32
Render output processors 8 8
Compute units 4 4
Pixel rate 4.8 GPixel/s 4.8 GPixel/s
Texture rate 19.2 GTexel/s 19.2 GTexel/s
Floating-point performance 384 GFLOPS 384 GFLOPS

memory

Radeon HD 4720  vs
4650 
Memory clock speed 667 MHz 700 MHz
Effective memory clock speed 1,334 MHz 1,400 MHz
Memory bus 128 bit 128 bit
Memory 1,024 MB 256 MB
Memory type GDDR3 GDDR3
Memory bandwidth 21.34 GB/s 22.4 GB/s

noise and power

TDP 55W 48W

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