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Differences What are the advantages of each

Front view of Radeon HD 7990

Reasons to consider the
Generic Radeon HD 7990

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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
Much better floating-point performance 8,192 GFLOPS vs 3,977 GFLOPS More than 2x better floating-point performance
More memory 6,144 MB vs 3,072 MB 2x more memory
Better 3DMark 11 graphics score 18,190 vs 14,020 Around 30% better 3DMark 11 graphics score
Significantly higher texture rate 256 GTexel/s vs 165.7 GTexel/s Around 55% higher texture rate
Many more shading units 4,096 vs 2,304 1792 more shading units
Higher pixel rate 64 GPixel/s vs 41.4 GPixel/s Around 55% higher pixel rate
Higher clock speed 950 MHz vs 863 MHz More than 10% higher clock speed
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
Higher turbo clock speed 1,000 MHz vs 902 MHz More than 10% higher turbo clock speed
Front view of GeForce GTX 780

Reasons to consider the
Nvidia GeForce GTX 780

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Better PassMark score 7,976 vs 5,471 More than 45% better PassMark score
Significantly better 3DMark06 score 35,080 vs 29,050 More than 20% better 3DMark06 score
Significantly better particle simulation score 966.29 mInteraction/s vs 555.42 mInteraction/s Around 75% better particle simulation score
Better PassMark direct compute score 3,971 vs 2,911 More than 35% better PassMark direct compute score
Significantly lower TDP 250W vs 375W Around 35% lower TDP

Benchmarks Real world tests of Radeon HD 7990 vs GeForce GTX 780

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

3DMark Vantage (Texture Fill) Industry standard benchmark that tests DirectX performance

Bitcoin mining Data courtesy CompuBench

Radeon HD 7990
458.53 mHash/s
GeForce GTX 780
255.31 mHash/s

Face detection Data courtesy CompuBench

Radeon HD 7990
90.43 mPixels/s
GeForce GTX 780
57.69 mPixels/s

Ocean surface simulation Data courtesy CompuBench

Radeon HD 7990
1,833.02 frames/s
GeForce GTX 780
1,928.62 frames/s

Particle simulation Data courtesy CompuBench

Radeon HD 7990
555.42 mInteraction/s
GeForce GTX 780
966.29 mInteraction/s

T-Rex (Compubench 1.5) Data courtesy CompuBench

Radeon HD 7990
9.04 frames/s
GeForce GTX 780
5.49 frames/s

Video composition Data courtesy CompuBench

Radeon HD 7990
96.42 frames/s
GeForce GTX 780
91.16 frames/s

Reviews Word on the street


Showing 15 comments.
its 2x 7970 in 1 card basically which is old tech (1-2 years) 780 is relatively new, The 6GB of Vram will only help when gaming in higher resolutions...1920x1080 only needs 2-3GB which is perfect for the 780..but as soon as you go 4k... FPS gain from that 780 will drop big time
also Everyone forgets about those Reference coolers...they die very quickly, clog up with dust very quickly, they get much louder as time goes on. So Automatically for the small price difference the triple fans 7990 wins by default.
where? i JUST was on there site, a computer with a 7970 costs $422 to upgrade to a 7990 and thats with a supposed $700 off going on right now just for november. so if you buy a computer right now from them you have $290 cost for the base 7970 plus $422 upgrade fee to the 7990 resulting in a final cost of $712, and if you buy after november thats $1412 for a 7990...................................... so no you cant get a 7990 in a build for $300 from them only a 7970
You can get a 7990 in a build on ibuypower for 300
a 7990? it must be used then since the cheapest online right now is $700, that or you actually have a 7970 which is $300 and scores under the gtx780 a little. that puts the gtx $200 cheaper. or you can get two 770's for the price of the 7990 and destroy it.
That's wrong because it depends on where you buy it, just got mine for 300$
that's wrong because it is only $20 more
Or if you don't want to start a fire. Personally, I would only consider a 7990 if I had a water block on it.
HD7990 crossfired??
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Still depends. If you are going for a quite rig it would still be better to go for the 780. You will see a decrease in price relatively soon once the next line of AMD cards are out. The reason for the price decrease was for the release of their next line.
now prices are almost same $ 659 and $ 649 . $10 different makes 7990 way better.
as of now, the 7990 is the obvios choice because its much better in most ways and only $80 more
Yes it's but the Price is the subject, to use dual SLI GTX 780 it will cost $1320 and single Radeon 7990 cost $1020.
Isn't the 7990 dual core? Then 6GB / 2 = 3GB = _same_ amount of money. This is pretty basic folks... :p
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