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Differences What are the advantages of each

Front view of Radeon RX 550

Reasons to consider the
AMD Radeon RX 550

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Higher clock speed 1,100 MHz vs 850 MHz Around 30% higher clock speed
Higher effective memory clock speed 7,000 MHz vs 4,800 MHz More than 45% higher effective memory clock speed
Significantly higher memory clock speed 1,750 MHz vs 1,200 MHz More than 45% higher memory clock speed
Much lower TDP 50W vs 228W 4.6x lower TDP
Front view of Radeon HD 5870 Eyefinity 6

Reasons to consider the
ATi Radeon HD 5870 Eyefinity 6

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Better floating-point performance 2,720 GFLOPS vs 1,211 GFLOPS Around 2.2x better floating-point performance
Higher memory bandwidth 153.6 GB/s vs 112 GB/s More than 35% higher memory bandwidth
More shading units 1,600 vs 512 1088 more shading units
More texture mapping units 80 vs 32 48 more texture mapping units
More render output processors 32 vs 16 Twice as many render output processors
Higher texture rate 68 GTexel/s vs 37.86 GTexel/s Around 80% higher texture rate
Slightly higher pixel rate 27.2 GPixel/s vs 18.93 GPixel/s Around 45% higher pixel rate
More compute units 20 vs 8 12 more compute units

Features Key features of the Radeon RX 550  vs HD 5870 Eyefinity 6 

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

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

Radeon RX 550
18.93 GPixel/s

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

Radeon RX 550
37.86 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon RX 550
1,211 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 RX 550  vs
HD 5870 Eyefinity 6 
GPU name Lexa Cypress
Clock speed 1,100 MHz 850 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 512 1,600
Texture mapping units 32 80
Render output processors 16 32
Compute units 8 20
Pixel rate 18.93 GPixel/s 27.2 GPixel/s
Texture rate 37.86 GTexel/s 68 GTexel/s
Floating-point performance 1,211 GFLOPS 2,720 GFLOPS


Radeon RX 550  vs
HD 5870 Eyefinity 6 
Memory clock speed 1,750 MHz 1,200 MHz
Effective memory clock speed 7,000 MHz 4,800 MHz
Memory bus 128 bit 256 bit
Memory 2,048 MB 2,048 MB
Memory type GDDR5 GDDR5
Memory bandwidth 112 GB/s 153.6 GB/s

noise and power

TDP 50W 228W


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