Cast your vote Do you agree or disagree with GPUBoss?

Thanks for adding your opinion. Follow us on Facebook to stay up to date with the latest news!

Differences What are the advantages of each

Front view of Radeon R9 270X

Reasons to consider the
Sapphire Radeon R9 270X

Report a correction
Much higher clock speed 1,100 MHz vs 550 MHz 2x higher clock speed
Significantly higher effective memory clock speed 6,000 MHz vs 2,800 MHz Around 2.2x higher effective memory clock speed
Higher pixel rate 36.8 GPixel/s vs 17.6 GPixel/s More than 2x higher pixel rate
Better floating-point performance 2,944 GFLOPS vs 1,760 GFLOPS More than 65% better floating-point performance
Higher texture rate 92 GTexel/s vs 44 GTexel/s More than 2x higher texture rate
Much higher memory clock speed 1,500 MHz vs 700 MHz Around 2.2x higher memory clock speed
Front view of Mobility Radeon HD 4870 X2

Reasons to consider the
ATi Mobility Radeon HD 4870 X2

Report a correction
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
Wider memory bus 512 bit vs 256 bit 2x wider memory bus

Features Key features of the Radeon R9 270X  vs Mobility Radeon HD 4870 X2 

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 R9 270X
36.8 GPixel/s

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

Radeon R9 270X
92 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon R9 270X
2,944 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
Mobility Radeon HD 4870 X2 
GPU name Curacao M98
Market Desktop Laptop
Clock speed 1,100 MHz 550 MHz
Is dual GPU No Yes
Reference card AMD Radeon R9 270X 1 GHz 2 GB None

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 17.6 GPixel/s
Texture rate 92 GTexel/s 44 GTexel/s
Floating-point performance 2,944 GFLOPS 1,760 GFLOPS


Radeon R9 270X  vs
Mobility Radeon HD 4870 X2 
Memory clock speed 1,500 MHz 700 MHz
Effective memory clock speed 6,000 MHz 2,800 MHz
Memory bus 256 bit 512 bit
Memory 2,048 MB 2,048 MB
Memory type GDDR5 GDDR5
Memory bandwidth 192 GB/s 179.2 GB/s


comments powered by Disqus