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Differences What are the advantages of each

Front view of Radeon R9 270X

Reasons to consider the
Sapphire Radeon R9 270X

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Higher clock speed 1,100 MHz vs 850 MHz Around 30% higher clock speed
Higher effective memory clock speed 6,000 MHz vs 4,800 MHz 25% higher effective memory clock speed
Higher memory bandwidth 192 GB/s vs 153.6 GB/s More than 25% higher memory bandwidth
Higher texture rate 92 GTexel/s vs 68 GTexel/s More than 35% higher texture rate
Higher pixel rate 36.8 GPixel/s vs 27.2 GPixel/s More than 35% higher pixel rate
Higher memory clock speed 1,500 MHz vs 1,200 MHz 25% higher memory clock speed
Front view of Radeon HD 5770 X2

Reasons to consider the
Generic Radeon HD 5770 X2

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Is dual GPU Yes vs No About half of graphics cards are dual GPU
More shading units 1,600 vs 1,280 320 more shading units

Features Key features of the Radeon R9 270X  vs HD 5770 X2 

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

Radeon R9 270X
192 GB/s
Radeon HD 5770 X2
153.6 GB/s

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

Radeon R9 270X
36.8 GPixel/s
Radeon HD 5770 X2
27.2 GPixel/s

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

Radeon R9 270X
92 GTexel/s
Radeon HD 5770 X2
68 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon R9 270X
2,944 GFLOPS
Radeon HD 5770 X2
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


Radeon R9 270X  vs
HD 5770 X2 
GPU name Curacao Juniper
Market Desktop Desktop
Clock speed 1,100 MHz 850 MHz
Is dual GPU No Yes
Reference card AMD Radeon R9 270X 1 GHz 2 GB ATi Radeon HD 5770 X2 850 MHz 2 GB

raw performance

Shading units 1,280 1,600
Texture mapping units 80 80
Render output processors 32 32
Compute units 20 20
Pixel rate 36.8 GPixel/s 27.2 GPixel/s
Texture rate 92 GTexel/s 68 GTexel/s
Floating-point performance 2,944 GFLOPS 2,720 GFLOPS


Radeon R9 270X  vs
HD 5770 X2 
Memory clock speed 1,500 MHz 1,200 MHz
Effective memory clock speed 6,000 MHz 4,800 MHz
Memory bus 256 bit 256 bit
Memory 2,048 MB 2,048 MB
Memory type GDDR5 GDDR5
Memory bandwidth 192 GB/s 153.6 GB/s


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