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Differences What are the advantages of each

Front view of Radeon HD 6570

Reasons to consider the
Sapphire Radeon HD 6570

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Significantly more memory 4,096 MB vs 512 MB 8x more memory
More shading units 480 vs 120 360 more shading units
More texture mapping units 24 vs 8 Three times as many texture mapping units
Front view of Radeon HD 4580

Reasons to consider the
ATi Radeon HD 4580

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Higher clock speed 796 MHz vs 650 MHz More than 20% higher clock speed

Features Key features of the Radeon HD 6570  vs 4580 

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

Radeon HD 6570
21.34 GB/s
Radeon HD 4580
22.18 GB/s

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

Radeon HD 6570
5.2 GPixel/s
Radeon HD 4580
3.18 GPixel/s

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

Radeon HD 6570
15.6 GTexel/s
Radeon HD 4580
6.37 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 6570
624 GFLOPS
Radeon HD 4580
191.04 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 6570  vs
4580 
GPU brand AMD ATI
GPU name Turks PRO RV635
Market Desktop Desktop
Clock speed 650 MHz 796 MHz
Is dual GPU No No
Reference card AMD Radeon HD 6570 650 MHz 2 GB None

raw performance

Shading units 480 120
Texture mapping units 24 8
Render output processors 8 4
Compute units 6 3
Pixel rate 5.2 GPixel/s 3.18 GPixel/s
Texture rate 15.6 GTexel/s 6.37 GTexel/s
Floating-point performance 624 GFLOPS 191.04 GFLOPS

memory

Radeon HD 6570  vs
4580 
Memory clock speed 667 MHz 693 MHz
Effective memory clock speed 1,334 MHz 1,386 MHz
Memory bus 128 bit 128 bit
Memory 4,096 MB 512 MB
Memory type DDR3 GDDR3
Memory bandwidth 21.34 GB/s 22.18 GB/s

noise and power

TDP 60W 65W

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