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Differences What are the advantages of each

Front view of Radeon HD 5870 Mac

Reasons to consider the
ATi Radeon HD 5870 Mac

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GPUBoss is not aware of any important advantages of the ATi Radeon HD 5870 Mac vs the EVGA GeForce GTX 680 Mac.

Front view of GeForce GTX 680 Mac

Reasons to consider the
EVGA GeForce GTX 680 Mac

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Higher clock speed 1,006 MHz vs 850 MHz Around 20% higher clock speed
Higher effective memory clock speed 6,008 MHz vs 4,780 MHz More than 25% higher effective memory clock speed
Higher memory bandwidth 192.3 GB/s vs 153 GB/s More than 25% higher memory bandwidth
Higher texture rate 128.8 GTexel/s vs 68 GTexel/s Around 90% higher texture rate
More memory 2,048 MB vs 1,024 MB 2x more memory
More texture mapping units 128 vs 80 48 more texture mapping units
Higher memory clock speed 1,502 MHz vs 1,195 MHz More than 25% higher memory clock speed
Lower TDP 195W vs 228W Around 15% lower TDP

Features Key features of the Radeon HD 5870 Mac  vs GeForce GTX 680 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 HD 5870 Mac
27.2 GPixel/s
GeForce GTX 680 Mac
32.2 GPixel/s

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

Radeon HD 5870 Mac
68 GTexel/s
GeForce GTX 680 Mac
128.8 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 5870 Mac
2,720 GFLOPS
GeForce GTX 680 Mac
3,090.4 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 5870 Mac  vs
GeForce GTX 680 Mac 
GPU brand ATI Nvidia
GPU name Cypress GK104
Market Desktop Desktop
Clock speed 850 MHz 1,006 MHz
Is dual GPU No No
Reference card None Nvidia GeForce GTX 680 Mac Edition 1 GHz 2 GB

raw performance

Shading units 1,600 1,536
Texture mapping units 80 128
Render output processors 32 32
Pixel rate 27.2 GPixel/s 32.2 GPixel/s
Texture rate 68 GTexel/s 128.8 GTexel/s
Floating-point performance 2,720 GFLOPS 3,090.4 GFLOPS

memory

Radeon HD 5870 Mac  vs
GeForce GTX 680 Mac 
Memory clock speed 1,195 MHz 1,502 MHz
Effective memory clock speed 4,780 MHz 6,008 MHz
Memory bus 256 bit 256 bit
Memory 1,024 MB 2,048 MB
Memory type GDDR5 GDDR5
Memory bandwidth 153 GB/s 192.3 GB/s

noise and power

TDP 228W 195W

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