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Differences What are the advantages of each

Front view of GeForce GTX 970

Reasons to consider the
Nvidia GeForce GTX 970

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Much higher effective memory clock speed 7,012 MHz vs 3,600 MHz Around 95% higher effective memory clock speed
Significantly higher clock speed 1,050 MHz vs 701 MHz Around 50% higher clock speed
More memory 4,096 MB vs 2,048 MB 2x more memory
Significantly higher pixel rate 58.8 GPixel/s vs 19.62 GPixel/s Around 3x higher pixel rate
Better floating-point performance 3,494 GFLOPS vs 1,883 GFLOPS More than 85% better floating-point performance
Much higher memory clock speed 1,753 MHz vs 900 MHz Around 95% higher memory clock speed
Significantly more shading units 1,664 vs 672 992 more shading units
Higher texture rate 109.2 GTexel/s vs 78.6 GTexel/s Around 40% higher texture rate
Front view of GeForce GTX 460 X2

Reasons to consider the
Nvidia GeForce GTX 460 X2

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Is dual GPU Yes vs No About half of graphics cards are dual GPU
Much wider memory bus 512 bit vs 256 bit 2x wider memory bus
More render output processors 64 vs 56 8 more render output processors

Features Key features of the GeForce GTX 970  vs 460 X2 

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

GeForce GTX 970
224.4 GB/s
GeForce GTX 460 X2
230.4 GB/s

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

GeForce GTX 970
58.8 GPixel/s
GeForce GTX 460 X2
19.62 GPixel/s

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

GeForce GTX 970
109.2 GTexel/s
GeForce GTX 460 X2
78.6 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTX 970
3,494 GFLOPS
GeForce GTX 460 X2
1,883 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 970  vs
460 X2 
GPU brand Nvidia Nvidia
GPU name GM204 GF104
Market Desktop Desktop
Clock speed 1,050 MHz 701 MHz
Is dual GPU No Yes
Reference card None None

raw performance

Shading units 1,664 672
Texture mapping units 104 112
Render output processors 56 64
Pixel rate 58.8 GPixel/s 19.62 GPixel/s
Texture rate 109.2 GTexel/s 78.6 GTexel/s
Floating-point performance 3,494 GFLOPS 1,883 GFLOPS

memory

GeForce GTX 970  vs
460 X2 
Memory clock speed 1,753 MHz 900 MHz
Effective memory clock speed 7,012 MHz 3,600 MHz
Memory bus 256 bit 512 bit
Memory 4,096 MB 2,048 MB
Memory type GDDR5 GDDR5
Memory bandwidth 224.4 GB/s 230.4 GB/s

noise and power

TDP 148W 160W

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