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Differences What are the advantages of each

Front view of Radeon HD 7970 X2

Reasons to consider the
HIS Radeon HD 7970 X2

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Is dual GPU Yes vs No About half of graphics cards are dual GPU
Much higher memory bandwidth 576 GB/s vs 288.4 GB/s Around 2x higher memory bandwidth
More memory 6,144 MB vs 3,072 MB 2x more memory
Significantly higher texture rate 268.8 GTexel/s vs 165.7 GTexel/s More than 60% higher texture rate
Higher clock speed 1,050 MHz vs 863 MHz More than 20% higher clock speed
Many more shading units 4,096 vs 2,304 1792 more shading units
Higher pixel rate 67.2 GPixel/s vs 41.4 GPixel/s More than 60% higher pixel rate
Much wider memory bus 768 bit vs 384 bit 2x wider memory bus
Significantly more texture mapping units 256 vs 192 64 more texture mapping units
More render output processors 64 vs 48 16 more render output processors
Front view of GeForce GTX 780

Reasons to consider the
Nvidia GeForce GTX 780

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Significantly lower TDP 250W vs 375W Around 35% lower TDP

Features Key features of the Radeon HD 7970 X2  vs GeForce GTX 780 

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

GeForce GTX 780
288.4 GB/s

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

Radeon HD 7970 X2
67.2 GPixel/s
GeForce GTX 780
41.4 GPixel/s

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

Radeon HD 7970 X2
268.8 GTexel/s
GeForce GTX 780
165.7 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 7970 X2
4,300.8 GFLOPS
GeForce GTX 780
3,977 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


Radeon HD 7970 X2  vs
GeForce GTX 780 
GPU brand AMD Nvidia
GPU name New Zealand GK110
Market Desktop Desktop
Clock speed 1,050 MHz 863 MHz
Is dual GPU Yes No
Reference card AMD Radeon HD 7970 X2 925 MHz 6 GB None

raw performance

Shading units 4,096 2,304
Texture mapping units 256 192
Render output processors 64 48
Pixel rate 67.2 GPixel/s 41.4 GPixel/s
Texture rate 268.8 GTexel/s 165.7 GTexel/s
Floating-point performance 4,300.8 GFLOPS 3,977 GFLOPS


Radeon HD 7970 X2  vs
GeForce GTX 780 
Memory clock speed 1,500 MHz 1,502 MHz
Effective memory clock speed 6,000 MHz 6,008 MHz
Memory bus 768 bit 384 bit
Memory 6,144 MB 3,072 MB
Memory type GDDR5 GDDR5
Memory bandwidth 576 GB/s 288.4 GB/s

noise and power

TDP 375W 250W


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