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Differences What are the advantages of each

Front view of GeForce GTX 960

Reasons to consider the
Nvidia GeForce GTX 960

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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
Higher memory clock speed 1,753 MHz vs 1,502 MHz More than 15% higher memory clock speed
Higher turbo clock speed 1,178 MHz vs 1,058 MHz More than 10% higher turbo clock speed
Lower TDP 120W vs 195W Around 40% lower TDP
Front view of GeForce GTX 680 Mac

Reasons to consider the
EVGA GeForce GTX 680 Mac

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Significantly higher memory bandwidth 192.3 GB/s vs 112.2 GB/s More than 70% higher memory bandwidth
Higher texture rate 128.8 GTexel/s vs 72.1 GTexel/s Around 80% higher texture rate
Significantly more texture mapping units 128 vs 64 Twice as many texture mapping units
Better floating-point performance 3,090.4 GFLOPS vs 2,308.1 GFLOPS Around 35% better floating-point performance
More shading units 1,536 vs 1,024 512 more shading units
Wider memory bus 256 bit vs 128 bit 2x wider memory bus

Features Key features of the GeForce GTX 960  vs 680 Mac 

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

GeForce GTX 960
112.2 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 960
36.1 GPixel/s
GeForce GTX 680 Mac
32.2 GPixel/s

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

GeForce GTX 960
72.1 GTexel/s
GeForce GTX 680 Mac
128.8 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTX 960
2,308.1 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 960  vs
680 Mac 
GPU brand Nvidia Nvidia
GPU name GM206 GK104
Market Desktop Desktop
Clock speed 1,127 MHz 1,006 MHz
Turbo clock speed 1,178 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 1,024 1,536
Texture mapping units 64 128
Render output processors 32 32
Pixel rate 36.1 GPixel/s 32.2 GPixel/s
Texture rate 72.1 GTexel/s 128.8 GTexel/s
Floating-point performance 2,308.1 GFLOPS 3,090.4 GFLOPS

memory

GeForce GTX 960  vs
680 Mac 
Memory clock speed 1,753 MHz 1,502 MHz
Effective memory clock speed 7,012 MHz 6,008 MHz
Memory bus 128 bit 256 bit
Memory 2,048 MB 2,048 MB
Memory type GDDR5 GDDR5
Memory bandwidth 112.2 GB/s 192.3 GB/s

noise and power

TDP 120W 195W

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