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Differences What are the advantages of each

Front view of Radeon HD 3870 Mac

Reasons to consider the
ATi Radeon HD 3870 Mac

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Higher clock speed 777 MHz vs 672 MHz More than 15% higher clock speed
Higher memory bandwidth 72.06 GB/s vs 12.8 GB/s Around 5.8x higher memory bandwidth
Higher effective memory clock speed 2,252 MHz vs 1,600 MHz More than 40% higher effective memory clock speed
Higher pixel rate 12.43 GPixel/s vs 1.34 GPixel/s Around 9.2x higher pixel rate
More render output processors 16 vs 2 14 more render output processors
Higher memory clock speed 1,126 MHz vs 800 MHz More than 40% higher memory clock speed
Slightly more shading units 320 vs 48 272 more shading units
Wider memory bus 256 bit vs 64 bit 4x wider memory bus
Front view of GeForce 610M

Reasons to consider the
Nvidia GeForce 610M

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Significantly lower TDP 12W vs 106W 8.8x lower TDP

Features Key features of the Radeon HD 3870 Mac  vs GeForce 610M 

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

Radeon HD 3870 Mac
72.06 GB/s
GeForce 610M
12.8 GB/s

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

Radeon HD 3870 Mac
12.43 GPixel/s
GeForce 610M
1.34 GPixel/s

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

Radeon HD 3870 Mac
12.43 GTexel/s
GeForce 610M
5.38 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 3870 Mac
497.3 GFLOPS
GeForce 610M
129.02 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


Radeon HD 3870 Mac  vs
GeForce 610M 
GPU brand ATI Nvidia
GPU name RV670 GF108
Market Desktop Laptop
Clock speed 777 MHz 672 MHz
Is dual GPU No No
Reference card None Nvidia GeForce 610M 625 MHz 1 GB

raw performance

Shading units 320 48
Texture mapping units 16 8
Render output processors 16 2
Pixel rate 12.43 GPixel/s 1.34 GPixel/s
Texture rate 12.43 GTexel/s 5.38 GTexel/s
Floating-point performance 497.3 GFLOPS 129.02 GFLOPS


Radeon HD 3870 Mac  vs
GeForce 610M 
Memory clock speed 1,126 MHz 800 MHz
Effective memory clock speed 2,252 MHz 1,600 MHz
Memory bus 256 bit 64 bit
Memory 512 MB 1,024 MB
Memory type GDDR4 DDR3
Memory bandwidth 72.06 GB/s 12.8 GB/s

noise and power

TDP 106W 12W


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