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Differences What are the advantages of each

Front view of Radeon R9 M370X Mac

Reasons to consider the
AMD Radeon R9 M370X Mac

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Significantly higher clock speed 775 MHz vs 503 MHz Around 55% higher clock speed
Significantly higher effective memory clock speed 4,500 MHz vs 1,700 MHz Around 2.8x higher effective memory clock speed
More memory 2,048 MB vs 512 MB 4x more memory
Slightly higher memory bandwidth 72 GB/s vs 54.4 GB/s More than 30% higher memory bandwidth
Slightly higher texture rate 32 GTexel/s vs 20.12 GTexel/s Around 60% higher texture rate
Higher memory clock speed 1,125 MHz vs 850 MHz More than 30% higher memory clock speed
Front view of Mobility Radeon HD 4850 Mac

Reasons to consider the
ATi Mobility Radeon HD 4850 Mac

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Significantly wider memory bus 256 bit vs 128 bit 2x wider memory bus

Features Key features of the Radeon R9 M370X Mac  vs Mobility Radeon HD 4850 Mac 

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 M370X Mac
12.8 GPixel/s

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

floating point performance How fast the gpu can crunch numbers

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 R9 M370X Mac  vs
Mobility Radeon HD 4850 Mac 
GPU brand AMD ATI
GPU name Tropo M98
Market Laptop Laptop
Clock speed 775 MHz 503 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 640 800
Texture mapping units 40 40
Render output processors 16 16
Compute units 10 10
Pixel rate 12.8 GPixel/s 8.05 GPixel/s
Texture rate 32 GTexel/s 20.12 GTexel/s
Floating-point performance 1,024 GFLOPS 804.8 GFLOPS

memory

Radeon R9 M370X Mac  vs
Mobility Radeon HD 4850 Mac 
Memory clock speed 1,125 MHz 850 MHz
Effective memory clock speed 4,500 MHz 1,700 MHz
Memory bus 128 bit 256 bit
Memory 2,048 MB 512 MB
Memory type GDDR5 GDDR3
Memory bandwidth 72 GB/s 54.4 GB/s

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