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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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More memory 2,048 MB vs 256 MB 8x more memory
Higher memory bandwidth 72 GB/s vs 25.41 GB/s More than 2.8x higher memory bandwidth
Higher effective memory clock speed 4,500 MHz vs 3,176 MHz More than 40% higher effective memory clock speed
Better floating-point performance 1,024 GFLOPS vs 240 GFLOPS More than 4.2x better floating-point performance
Higher texture rate 32 GTexel/s vs 6 GTexel/s More than 5.2x higher texture rate
Higher pixel rate 12.8 GPixel/s vs 3 GPixel/s More than 4.2x higher pixel rate
More texture mapping units 40 vs 8 32 more texture mapping units
More shading units 640 vs 160 480 more shading units
More render output processors 16 vs 4 12 more render output processors
More compute units 10 vs 2 8 more compute units
Higher memory clock speed 1,125 MHz vs 794 MHz More than 40% higher memory clock speed
Wider memory bus 128 bit vs 64 bit 2x wider memory bus
Front view of Radeon HD 6490M Mac

Reasons to consider the
AMD Radeon HD 6490M Mac

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GPUBoss is not aware of any important advantages of the Radeon HD 6490M Mac vs the Radeon R9 M370X Mac.

Features Key features of the Radeon R9 M370X Mac  vs HD 6490M 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
Radeon HD 6490M Mac
3 GPixel/s

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

Radeon R9 M370X Mac
32 GTexel/s
Radeon HD 6490M Mac
6 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon R9 M370X Mac
1,024 GFLOPS
Radeon HD 6490M Mac

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 M370X Mac  vs
HD 6490M Mac 
GPU name Tropo Seymour
Market Laptop Laptop
Clock speed 775 MHz 750 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 640 160
Texture mapping units 40 8
Render output processors 16 4
Compute units 10 2
Pixel rate 12.8 GPixel/s 3 GPixel/s
Texture rate 32 GTexel/s 6 GTexel/s
Floating-point performance 1,024 GFLOPS 240 GFLOPS


Radeon R9 M370X Mac  vs
HD 6490M Mac 
Memory clock speed 1,125 MHz 794 MHz
Effective memory clock speed 4,500 MHz 3,176 MHz
Memory bus 128 bit 64 bit
Memory 2,048 MB 256 MB
Memory type GDDR5 GDDR5
Memory bandwidth 72 GB/s 25.41 GB/s


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