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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 effective memory clock speed 1,600 MHz vs 990 MHz More than 60% higher effective memory clock speed
Higher memory bandwidth 25.6 GB/s vs 7.92 GB/s Around 3.2x higher memory bandwidth
Higher texture rate 24 GTexel/s vs 3.18 GTexel/s More than 7.5x higher texture rate
More texture mapping units 32 vs 4 28 more texture mapping units
Higher memory clock speed 800 MHz vs 495 MHz More than 60% higher memory clock speed
More shading units 320 vs 40 280 more shading units
Wider memory bus 128 bit vs 64 bit 2x wider memory bus
Front view of Radeon HD 3570

Reasons to consider the
ATi Radeon HD 3570

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Lower TDP 30W vs 59W Around 50% lower TDP

Features Key features of the Radeon HD 4670  vs 3570 

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

Radeon HD 4670
25.6 GB/s
Radeon HD 3570
7.92 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 3570
3.18 GPixel/s

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

Radeon HD 4670
24 GTexel/s
Radeon HD 3570
3.18 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 4670
Radeon HD 3570
63.68 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


Radeon HD 4670  vs
GPU name RV730 RV620
Market Desktop Desktop
Clock speed 750 MHz 796 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 320 40
Texture mapping units 32 4
Render output processors 8 4
Compute units 4 2
Pixel rate 6 GPixel/s 3.18 GPixel/s
Texture rate 24 GTexel/s 3.18 GTexel/s
Floating-point performance 480 GFLOPS 63.68 GFLOPS


Radeon HD 4670  vs
Memory clock speed 800 MHz 495 MHz
Effective memory clock speed 1,600 MHz 990 MHz
Memory bus 128 bit 64 bit
Memory 512 MB 512 MB
Memory type GDDR3 DDR2
Memory bandwidth 25.6 GB/s 7.92 GB/s

noise and power

TDP 59W 30W

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