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Differences What are the advantages of each

Front view of Radeon HD 9970

Reasons to consider the
AMD Radeon HD 9970

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Much better floating-point performance 8,192 GFLOPS vs 3,494 GFLOPS More than 2.2x better floating-point performance
Significantly higher memory bandwidth 307 GB/s vs 224.4 GB/s More than 35% higher memory bandwidth
Many more shading units 4,096 vs 1,664 2432 more shading units
Many more texture mapping units 256 vs 104 152 more texture mapping units
Higher texture rate 168 GTexel/s vs 109.2 GTexel/s Around 55% higher texture rate
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
Front view of GeForce GTX 970

Reasons to consider the
Nvidia GeForce GTX 970

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Significantly higher effective memory clock speed 7,012 MHz vs 5,000 MHz More than 40% higher effective memory clock speed
Significantly higher memory clock speed 1,753 MHz vs 1,250 MHz More than 40% higher memory clock speed
Significantly lower TDP 148W vs 255W More than 40% lower TDP

Features Key features of the Radeon HD 9970  vs GeForce GTX 970 

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

Radeon HD 9970
307 GB/s
GeForce GTX 970
224.4 GB/s

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

Radeon HD 9970
64 GPixel/s
GeForce GTX 970
58.8 GPixel/s

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

Radeon HD 9970
168 GTexel/s
GeForce GTX 970
109.2 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 9970
8,192 GFLOPS
GeForce GTX 970
3,494 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 9970  vs
GeForce GTX 970 
GPU brand AMD Nvidia
GPU name Hawaii XT GM204
Market Desktop Desktop
Clock speed 1,000 MHz 1,050 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 4,096 1,664
Texture mapping units 256 104
Render output processors 64 56
Pixel rate 64 GPixel/s 58.8 GPixel/s
Texture rate 168 GTexel/s 109.2 GTexel/s
Floating-point performance 8,192 GFLOPS 3,494 GFLOPS

memory

Radeon HD 9970  vs
GeForce GTX 970 
Memory clock speed 1,250 MHz 1,753 MHz
Effective memory clock speed 5,000 MHz 7,012 MHz
Memory bus 512 bit 256 bit
Memory 4,096 MB 4,096 MB
Memory type GDDR5 GDDR5
Memory bandwidth 307 GB/s 224.4 GB/s

noise and power

TDP 255W 148W

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