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Differences What are the advantages of each

Front view of Radeon HD 4650

Reasons to consider the
BIOSTAR Radeon HD 4650

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Higher effective memory clock speed 1,400 MHz vs 792 MHz More than 75% higher effective memory clock speed
Higher memory clock speed 700 MHz vs 396 MHz More than 75% higher memory clock speed
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 3730

Reasons to consider the
ATi Radeon HD 3730

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Higher clock speed 722 MHz vs 600 MHz More than 20% higher clock speed

Features Key features of the Radeon HD 4650  vs 3730 

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

Radeon HD 4650
22.4 GB/s
Radeon HD 3730
12.67 GB/s

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

Radeon HD 4650
4.8 GPixel/s
Radeon HD 3730
2.89 GPixel/s

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

Radeon HD 4650
19.2 GTexel/s
Radeon HD 3730
5.78 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 4650
384 GFLOPS
Radeon HD 3730
173.3 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 4650  vs
3730 
GPU brand ATI ATI
GPU name RV730 RV635
Market Desktop Desktop
Clock speed 600 MHz 722 MHz
Is dual GPU No No
Reference card ATi Radeon HD 4650 600 MHz 256 MB None

raw performance

Shading units 320 120
Texture mapping units 32 8
Render output processors 8 4
Compute units 4 3
Pixel rate 4.8 GPixel/s 2.89 GPixel/s
Texture rate 19.2 GTexel/s 5.78 GTexel/s
Floating-point performance 384 GFLOPS 173.3 GFLOPS

memory

Radeon HD 4650  vs
3730 
Memory clock speed 700 MHz 396 MHz
Effective memory clock speed 1,400 MHz 792 MHz
Memory bus 128 bit 128 bit
Memory 256 MB 512 MB
Memory type GDDR3 DDR2
Memory bandwidth 22.4 GB/s 12.67 GB/s

noise and power

TDP 48W 65W

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