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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
Higher clock speed 1,050 MHz vs 836 MHz More than 25% higher clock speed
Significantly higher texture rate 268.8 GTexel/s vs 187.3 GTexel/s Around 45% higher texture rate
Significantly more shading units 4,096 vs 2,688 1408 more shading units
Much wider memory bus 768 bit vs 384 bit 2x wider memory bus
Higher pixel rate 67.2 GPixel/s vs 46.8 GPixel/s Around 45% higher pixel rate
More render output processors 64 vs 48 16 more render output processors
More texture mapping units 256 vs 224 32 more texture mapping units
Front view of GeForce GTX TITAN

Reasons to consider the
Nvidia GeForce GTX TITAN

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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 TITAN 

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

GeForce GTX TITAN
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 TITAN
46.8 GPixel/s

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

Radeon HD 7970 X2
268.8 GTexel/s
GeForce GTX TITAN
187.3 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 7970 X2
4,300.8 GFLOPS
GeForce GTX TITAN
4,494 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 7970 X2  vs
GeForce GTX TITAN 
GPU brand AMD Nvidia
GPU name New Zealand GK110
Market Desktop Desktop
Clock speed 1,050 MHz 836 MHz
Is dual GPU Yes No
Reference card AMD Radeon HD 7970 X2 925 MHz 6 GB None

raw performance

Shading units 4,096 2,688
Texture mapping units 256 224
Render output processors 64 48
Pixel rate 67.2 GPixel/s 46.8 GPixel/s
Texture rate 268.8 GTexel/s 187.3 GTexel/s
Floating-point performance 4,300.8 GFLOPS 4,494 GFLOPS

memory

Radeon HD 7970 X2  vs
GeForce GTX TITAN 
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 6,144 MB
Memory type GDDR5 GDDR5
Memory bandwidth 576 GB/s 288.4 GB/s

noise and power

TDP 375W 250W

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Comments

Showing 4 comments.
now its $230, and the one minus people talk about with the tri and quad sli, whos gonna pay $3000-$4000 for dat, 1-2 7990s for $730-$1470
actually the "X2" means two 7970's in crossfire so the price they show is actually pretty accurate
God, no. The card price listed isn't even that of this card, it's the price of the PowerColor "7990", which is just two of their 7970s thrown together. The "X2" part should be "X²", since "IceQ X²" is the name of HIS's custom cooler. This is the proper Newegg link: http://www.newegg.com/Product/Product.aspx?Item=N82E16814161412 and the card costs $400. The $900 price tag is a mistake by GPUBoss, so you're beating the Titan with more than $600 less.
So for $120 less, you get far better performance than a GTX Titan. Well done AMD, well done!
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