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GeForce GTX 780 Ti vs Radeon HD 7990

Intro

The GeForce GTX 780 Ti makes use of a 28 nm design. nVidia has clocked the core frequency at 875 MHz. The GDDR5 memory is set to run at a speed of 1750 MHz on this specific card. It features 2880 SPUs as well as 240 Texture Address Units and 48 ROPs.

Compare those specifications to the Radeon HD 7990, which features a GPU core clock speed of 950 MHz, and 3072 MB of GDDR5 RAM set to run at 1500 MHz through a 384-bit bus. It also features 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 7990 15520 points
GeForce GTX 780 Ti 10900 points
Difference: 4620 (42%)

Ethereum Mining Hash Rate

Radeon HD 7990 32 Mh/s
GeForce GTX 780 Ti 19 Mh/s
Difference: 13 (68%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 780 Ti 250 Watts
Radeon HD 7990 375 Watts
Difference: 125 Watts (50%)

Memory Bandwidth

The Radeon HD 7990, in theory, should be quite a bit faster than the GeForce GTX 780 Ti overall. (explain)

Radeon HD 7990 576000 MB/sec
GeForce GTX 780 Ti 336000 MB/sec
Difference: 240000 (71%)

Texel Rate

The Radeon HD 7990 is a bit (approximately 16%) better at AF than the GeForce GTX 780 Ti. (explain)

Radeon HD 7990 243200 Mtexels/sec
GeForce GTX 780 Ti 210000 Mtexels/sec
Difference: 33200 (16%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 7990 is a better choice, by a large margin. (explain)

Radeon HD 7990 60800 Mpixels/sec
GeForce GTX 780 Ti 42000 Mpixels/sec
Difference: 18800 (45%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce GTX 780 Ti

Amazon.com

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Radeon HD 7990

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 780 Ti Radeon HD 7990
Manufacturer nVidia AMD
Year November 2013 April 2013
Code Name GK110 Malta
Memory 3072 MB 3072 MB (x2)
Core Speed 875 MHz 950 MHz (x2)
Memory Speed 7000 MHz 6000 MHz (x2)
Power (Max TDP) 250 watts 375 watts
Bandwidth 336000 MB/sec 576000 MB/sec
Texel Rate 210000 Mtexels/sec 243200 Mtexels/sec
Pixel Rate 42000 Mpixels/sec 60800 Mpixels/sec
Unified Shaders 2880 2048 (x2)
Texture Mapping Units 240 128 (x2)
Render Output Units 48 32 (x2)
Bus Type GDDR5 GDDR5
Bus Width 384-bit 384-bit (x2)
Fab Process 28 nm 28 nm
Transistors 7080 million 4313 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.1
OpenGL Version OpenGL 4.4 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GTX 780 Ti

Amazon.com

Check prices at:

Radeon HD 7990

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Comments

22 Responses to “GeForce GTX 780 Ti vs Radeon HD 7990”
GustaCz says:

Lol. Thats why is HD 7990 Best Grphics Card

Steve says:

Yeah but its a dual chip card soooo...

Jorge says:

So, the 7990 still remaining the king of the video cards, even with dual chip

Jan says:

The Radion HD 7990 card makes a lot of noice compared to the Nvidia GTX 780 Ti

actully sold my HD 7990 to a friend because the noice was too much for me.

Ed says:

The 7990 at full load runs at 39 dba which is actually quieter that the 780ti reference card (by 2 dba). So I have no idea what Jan is talking about. The 780ti is a great card but it still won't beat the 7990 and the 7990 has recently dropped in price (in the UK at least) so it's really a compelling option.

Jan says:

I have water cooling in my tower and not the best air flow, so think that was the reason since there are no noise problem on my friend's pc.

It's okay to laugh at my stupidity/ignorance and i am not the best to such things, so just said what i self felt

Connor says:

its still a dual chip card to really make it fair you would have to sli two 780ti's to make it equal, although it would still be under performing than being a dual chip it would still crush the 7990

Nigga says:

Nigga nigga nigga, you're 100% nigga

Nigga2 says:

Nigga nigga nigga, im 200% nigga

sam says:

the best card in the world is a HD 7990

sam says:

i have a hd 7990 no regret

Nigga3 says:

Nigga nigga nigga, im 300% nigga

Nigga4 says:

Nigga nigga nigaa, im 400% nigga

Nigga5 says:

Nigga nigga nigga, im 500% nigga

Nigga6 says:

I don't care what these previous niggas had to say BUT THE 7990 IS THE BEST GPU OF ALL TIME!!!!1

Theblackrain says:

The dual GPU argument is very overblown, I don't have any problems with my 7990 since 13.10 drivers. Frame pacing issues are sorted and most games have CF profiles available before launch. It destroys any game I throw at it and liquid cooling solves the heat and noise issue (not that it was that bad anyway).

volja says:

You guys are nuts. How possible 7990 can be the best card if it really suck on power consumption, heat and price. 780Ti in SLI outperform it easily and the price will not be higher. AMD will never be able to get even close to NVIDA on graphics and Intel on processors they sucked!

Blooddrunk says:

@Volja
780ti in SLI max power consumption would be around 500W
and thats alot more than 7990 Power C.
It would outperform 7990 but only by 15% MAX at the cost of more power drain and 2x780ti cost around 400$ more than 7990.
When it comes to dualchip GPUs AMD is a fucking beast.

徐晶昊 says:

780ti in SLI max power consumption would be around 500W
and thats alot more than 7990 Power C.
It would outperform 7990 but only by 15% MAX at the cost of more power drain and 2x780ti cost around 400$ more than 7990.
When it comes to dualchip GPUs AMD is a fucking beast.

Artur says:

No it wouldnt be fair to comere it with 2x 780ti.
becouse an 7990 are tow full 7970.
And you cant compare an gtx 7970 with and gtx 780ti

Azis says:

Dem nvidia fanboys be mad!

#14 Scb says:

All Radeon Graphics Cards are mainly known for their poor reliability to maintain steady and fixed greatly-presented graphics. In other words, if you were to install the Radeon 7990 in your in pc and launch a very powerful game like GTA V, compared to the GTX 780Ti or any other Nvidia card in general, the difference will be oblivious. Sound levels from the Radeon's fan(s), the heat conduction that it produces is twice as much than a GTX which would require you to spend even more moeny on possibly another case fan or a coolant fan or just setting the whole damn thing in front of an ac. Nvidia cards do make some noise when overclocked and ran during beefy games, but are certainly much more quiet than any Radeon card, and most definitely more reliable and lesa likely to fry when overclocked, leaving me to claim that financially and theorectically, the GTX 780Ti is a more compelling option than the Radeon 7990.

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