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Differences What are the advantages of each

Front view of Radeon R5 M445

Reasons to consider the
AMD Radeon R5 M445

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GPUBoss is not aware of any important advantages of the Radeon R5 M445 vs the Radeon HD 7870.

Front view of Radeon HD 7870

Reasons to consider the
AMD Radeon HD 7870

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Significantly higher effective memory clock speed 4,800 MHz vs 1,800 MHz Around 2.8x higher effective memory clock speed
Significantly higher memory bandwidth 153.6 GB/s vs 14.4 GB/s Around 10.8x higher memory bandwidth
Higher clock speed 1,000 MHz vs 900 MHz More than 10% higher clock speed
Better floating-point performance 2,560 GFLOPS vs 691.2 GFLOPS Around 3.8x better floating-point performance
Higher pixel rate 32 GPixel/s vs 7.2 GPixel/s Around 4.5x higher pixel rate
Higher texture rate 80 GTexel/s vs 21.6 GTexel/s Around 3.8x higher texture rate
More render output processors 32 vs 8 24 more render output processors
Slightly more memory 2,048 MB vs 1,024 MB 2x more memory
More shading units 1,280 vs 384 896 more shading units
More texture mapping units 80 vs 24 56 more texture mapping units
More compute units 20 vs 6 14 more compute units
Higher memory clock speed 1,200 MHz vs 900 MHz Around 35% higher memory clock speed
Wider memory bus 256 bit vs 64 bit 4x wider memory bus

Features Key features of the Radeon R5 M445  vs HD 7870 

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

Radeon R5 M445
14.4 GB/s
Radeon HD 7870
153.6 GB/s

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

Radeon R5 M445
7.2 GPixel/s
Radeon HD 7870
32 GPixel/s

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

Radeon R5 M445
21.6 GTexel/s
Radeon HD 7870
80 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon R5 M445
691.2 GFLOPS
Radeon HD 7870
2,560 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 R5 M445  vs
HD 7870 
GPU brand AMD AMD
GPU name Meso Pitcairn XT
Clock speed 900 MHz 1,000 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 384 1,280
Texture mapping units 24 80
Render output processors 8 32
Compute units 6 20
Pixel rate 7.2 GPixel/s 32 GPixel/s
Texture rate 21.6 GTexel/s 80 GTexel/s
Floating-point performance 691.2 GFLOPS 2,560 GFLOPS

memory

Radeon R5 M445  vs
HD 7870 
Memory clock speed 900 MHz 1,200 MHz
Effective memory clock speed 1,800 MHz 4,800 MHz
Memory bus 64 bit 256 bit
Memory 1,024 MB 2,048 MB
Memory type DDR3 GDDR5
Memory bandwidth 14.4 GB/s 153.6 GB/s

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