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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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Significantly 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 pixel rate 35.2 GPixel/s vs 27.2 GPixel/s Around 30% higher pixel rate
Higher texture rate 88 GTexel/s vs 68 GTexel/s Around 30% higher texture rate
Higher memory clock speed 1,500 MHz vs 1,200 MHz 25% higher memory clock speed
Lower TDP 180W vs 228W More than 20% lower TDP
Front view of Radeon HD 5870 Eyefinity 6

Reasons to consider the
ATi Radeon HD 5870 Eyefinity 6

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More shading units 1,600 vs 1,280 320 more shading units

Features Key features of the Radeon R9 270X  vs HD 5870 Eyefinity 6 

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

Radeon R9 270X
35.2 GPixel/s
But the difference is quite big, bigger than the extra performance delivered, which has the R9 270X HAWK fall behind the HD 7950 in performance per watt.
Radeon R9 270X | by techPowerUp!

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

Radeon R9 270X
88 GTexel/s
The card is overclocked out of the box, giving it a 3% performance advantage over the stock R9 270X, which matches the HD 7950 in performance and is 11% faster than the HD 7870.
Radeon R9 270X | by techPowerUp!

floating point performance How fast the gpu can crunch numbers

Radeon R9 270X
2,816 GFLOPS
It makes use of Bethesda's Creation Engine which isn't visually intensive in that it doesn't use taxing graphics features; instead, the game's presentation itself, with large open worlds, ends up taxing your hardware.
Radeon R9 270X | by techPowerUp!

shading units Subcomponents of the gpu, these run in parallel to enable fast pixel shading

AMD's Pitcairn graphics processor uses the GCN shader architecture.
Radeon R9 270X | by techPowerUp!

texture mapping units Built into each gpu, these resize and rotate bitmaps for texturing scenes

The 28 nm "Pitcairn" silicon, on which the Radeon R9 270X is based, features 1,280 stream processors based on the Graphics CoreNext micro-architecture, 80 texture memory units (TMUs), 32 raster operations units (ROPs), and a 256-bit wide GDDR5 memory interface, holding 2 GB of memory.
Radeon R9 270X | by techPowerUp!

compute units Discrete cores within the GPU

Specifications Full list of technical specs


Radeon R9 270X  vs
HD 5870 Eyefinity 6 
GPU brand AMD ATi
GPU name Curacao Cypress
Market Desktop Desktop
Clock speed 1,100 MHz 850 MHz
Is dual GPU No No
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 35.2 GPixel/s 27.2 GPixel/s
Texture rate 88 GTexel/s 68 GTexel/s
Floating-point performance 2,816 GFLOPS 2,720 GFLOPS


Radeon R9 270X  vs
HD 5870 Eyefinity 6 
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

noise and power

TDP 180W 228W


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