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Differences What are the advantages of each

Front view of GeForce GTX 980

Reasons to consider the
Nvidia GeForce GTX 980

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Significantly higher pixel rate 77.82 GPixel/s vs 32.2 GPixel/s Around 2.5x higher pixel rate
Better floating-point performance 4,981 GFLOPS vs 3,090.4 GFLOPS More than 60% better floating-point performance
More memory 4,096 MB vs 2,048 MB 2x more memory
Higher effective memory clock speed 7,012 MHz vs 6,008 MHz More than 15% higher effective memory clock speed
Higher clock speed 1,127 MHz vs 1,006 MHz More than 10% higher clock speed
Significantly more render output processors 64 vs 32 Twice as many render output processors
Higher memory bandwidth 224.4 GB/s vs 192.3 GB/s More than 15% higher memory bandwidth
Higher texture rate 155.6 GTexel/s vs 128.8 GTexel/s More than 20% higher texture rate
More shading units 2,048 vs 1,536 512 more shading units
Higher turbo clock speed 1,216 MHz vs 1,058 MHz Around 15% higher turbo clock speed
Higher memory clock speed 1,753 MHz vs 1,502 MHz More than 15% higher memory clock speed
Lower TDP 165W vs 195W More than 15% lower TDP
Front view of GeForce GTX 680 Mac

Reasons to consider the
EVGA GeForce GTX 680 Mac

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GPUBoss is not aware of any important advantages of the EVGA GeForce GTX 680 Mac vs the Nvidia GeForce GTX 980.

Features Key features of the GeForce GTX 980  vs 680 Mac 

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

GeForce GTX 980
224.4 GB/s
GeForce GTX 680 Mac
192.3 GB/s

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

GeForce GTX 980
77.82 GPixel/s
GeForce GTX 680 Mac
32.2 GPixel/s

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

GeForce GTX 980
155.6 GTexel/s
GeForce GTX 680 Mac
128.8 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTX 980
4,981 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

GeForce GTX 980  vs
680 Mac 
GPU brand Nvidia Nvidia
GPU name GM204 GK104
Market Desktop Desktop
Clock speed 1,127 MHz 1,006 MHz
Turbo clock speed 1,216 MHz 1,058 MHz
Is dual GPU No No
Reference card None Nvidia GeForce GTX 680 Mac Edition 1 GHz 2 GB

raw performance

Shading units 2,048 1,536
Texture mapping units 128 128
Render output processors 64 32
Pixel rate 77.82 GPixel/s 32.2 GPixel/s
Texture rate 155.6 GTexel/s 128.8 GTexel/s
Floating-point performance 4,981 GFLOPS 3,090.4 GFLOPS

memory

GeForce GTX 980  vs
680 Mac 
Memory clock speed 1,753 MHz 1,502 MHz
Effective memory clock speed 7,012 MHz 6,008 MHz
Memory bus 256 bit 256 bit
Memory 4,096 MB 2,048 MB
Memory type GDDR5 GDDR5
Memory bandwidth 224.4 GB/s 192.3 GB/s

noise and power

TDP 165W 195W

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