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Differences What are the advantages of each

Front view of Radeon RX 480

Reasons to consider the
AMD Radeon RX 480

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Much more memory 8,192 MB vs 1,024 MB 8x more memory
Much higher effective memory clock speed 8,000 MHz vs 4,780 MHz More than 65% higher effective memory clock speed
Significantly higher memory bandwidth 256 GB/s vs 153 GB/s More than 65% higher memory bandwidth
Higher clock speed 1,120 MHz vs 850 MHz More than 30% higher clock speed
Significantly better floating-point performance 5,834 GFLOPS vs 2,720 GFLOPS Around 2.2x better floating-point performance
Much higher texture rate 182.3 GTexel/s vs 68 GTexel/s Around 2.8x higher texture rate
Much higher memory clock speed 2,000 MHz vs 1,195 MHz More than 65% higher memory clock speed
Significantly more texture mapping units 144 vs 80 64 more texture mapping units
Higher pixel rate 40.5 GPixel/s vs 27.2 GPixel/s Around 50% higher pixel rate
More shading units 2,304 vs 1,600 704 more shading units
More compute units 36 vs 20 16 more compute units
Lower TDP 150W vs 228W Around 35% lower TDP
Front view of Radeon HD 5870 Mac

Reasons to consider the
ATi Radeon HD 5870 Mac

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GPUBoss is not aware of any important advantages of the ATi Radeon HD 5870 Mac vs the AMD Radeon RX 480.

Features Key features of the Radeon RX 480  vs HD 5870 Mac 

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

Radeon RX 480
256 GB/s

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

Radeon RX 480
40.5 GPixel/s
Radeon HD 5870 Mac
27.2 GPixel/s

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

Radeon RX 480
182.3 GTexel/s
Radeon HD 5870 Mac
68 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon RX 480
5,834 GFLOPS
Radeon HD 5870 Mac
2,720 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 RX 480  vs
HD 5870 Mac 
GPU brand AMD ATI
GPU name Ellesmere Cypress
Market Desktop Desktop
Clock speed 1,120 MHz 850 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 2,304 1,600
Texture mapping units 144 80
Render output processors 32 32
Compute units 36 20
Pixel rate 40.5 GPixel/s 27.2 GPixel/s
Texture rate 182.3 GTexel/s 68 GTexel/s
Floating-point performance 5,834 GFLOPS 2,720 GFLOPS

memory

Radeon RX 480  vs
HD 5870 Mac 
Memory clock speed 2,000 MHz 1,195 MHz
Effective memory clock speed 8,000 MHz 4,780 MHz
Memory bus 256 bit 256 bit
Memory 8,192 MB 1,024 MB
Memory type GDDR5 GDDR5
Memory bandwidth 256 GB/s 153 GB/s

noise and power

TDP 150W 228W

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