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Differences What are the advantages of each

Front view of Radeon HD 8870

Reasons to consider the
AMD Radeon HD 8870

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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
Better floating-point performance 3,789 GFLOPS vs 2,720 GFLOPS Around 40% better floating-point performance
Higher texture rate 118.4 GTexel/s vs 68 GTexel/s Around 75% higher texture rate
Slightly higher clock speed 925 MHz vs 850 MHz Around 10% higher clock speed
More texture mapping units 128 vs 80 48 more texture mapping units
More compute units 32 vs 20 12 more compute units
More shading units 2,048 vs 1,600 448 more shading units
Higher memory clock speed 1,500 MHz vs 1,200 MHz 25% higher memory clock speed
Lower TDP 185W vs 228W Around 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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GPUBoss is not aware of any important advantages of the ATi Radeon HD 5870 Eyefinity 6 vs the AMD Radeon HD 8870.

Features Key features of the Radeon HD 8870  vs 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 HD 8870
29.6 GPixel/s

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

Radeon HD 8870
118.4 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 8870
3,789 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

gpu

Radeon HD 8870  vs
5870 Eyefinity 6 
GPU brand AMD ATI
GPU name Hainan XT Cypress
Market Desktop Desktop
Clock speed 925 MHz 850 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 2,048 1,600
Texture mapping units 128 80
Render output processors 32 32
Compute units 32 20
Pixel rate 29.6 GPixel/s 27.2 GPixel/s
Texture rate 118.4 GTexel/s 68 GTexel/s
Floating-point performance 3,789 GFLOPS 2,720 GFLOPS

memory

Radeon HD 8870  vs
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
Memory bandwidth 192 GB/s 153.6 GB/s

noise and power

TDP 185W 228W

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