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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 800 MHz Around 40% higher clock speed
Significantly higher effective memory clock speed 7,000 MHz vs 4,200 MHz More than 65% higher effective memory clock speed
Better PassMark score 3,684 vs 2,534 More than 45% better PassMark score
Significantly higher memory clock speed 1,750 MHz vs 1,050 MHz More than 65% higher memory clock speed
Much lower TDP 50W vs 254W 5.1x lower TDP
Front view of Radeon HD 6850 X2

Reasons to consider the
Generic Radeon HD 6850 X2

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Is dual GPU Yes vs No About half of graphics cards are dual GPU
Significantly higher memory bandwidth 268.8 GB/s vs 112 GB/s Around 2.5x higher memory bandwidth
Many more render output processors 64 vs 16 48 more render output processors
Higher pixel rate 51.2 GPixel/s vs 18.93 GPixel/s Around 2.8x higher pixel rate
More memory 4,096 MB vs 2,048 MB 2x more memory
Better floating-point performance 3,072 GFLOPS vs 1,211 GFLOPS More than 2.5x better floating-point performance
Significantly more shading units 1,920 vs 512 1408 more shading units
More texture mapping units 96 vs 32 Three times as many texture mapping units
Higher texture rate 76.8 GTexel/s vs 37.86 GTexel/s More than 2x higher texture rate
More compute units 24 vs 8 Three times as many compute units
Wider memory bus 512 bit vs 128 bit 4x wider memory bus

Benchmarks Real world tests of Radeon RX 550 vs HD 6850 X2

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Features Key features of the Radeon RX 550  vs HD 6850 X2 

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

Radeon RX 550
112 GB/s
Radeon HD 6850 X2
268.8 GB/s

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

Radeon RX 550
18.93 GPixel/s
Radeon HD 6850 X2
51.2 GPixel/s

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

Radeon RX 550
37.86 GTexel/s
Radeon HD 6850 X2
76.8 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon RX 550
1,211 GFLOPS
Radeon HD 6850 X2
3,072 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


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