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GeForce GTX Titan vs Radeon HD 7990

Intro

The GeForce GTX Titan uses a 28 nm design. nVidia has clocked the core frequency at 837 MHz. The GDDR5 RAM is set to run at a speed of 1502 MHz on this card. It features 2688 SPUs as well as 224 TAUs and 48 Rasterization Operator Units.

Compare those specifications to the Radeon HD 7990, which has a GPU core clock speed of 950 MHz, and 3072 MB of GDDR5 memory running at 1500 MHz through a 384-bit bus. It also is comprised of 2048 Stream Processors, 128 TAUs, and 32 ROPs.

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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 Titan 10162 points
Difference: 5358 (53%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

The Radeon HD 7990 should in theory be a lot faster than the GeForce GTX Titan in general. (explain)

Radeon HD 7990 576000 MB/sec
GeForce GTX Titan 288384 MB/sec
Difference: 287616 (100%)

Texel Rate

The Radeon HD 7990 is a lot (more or less 30%) more effective at texture filtering than the GeForce GTX Titan. (explain)

Radeon HD 7990 243200 Mtexels/sec
GeForce GTX Titan 187488 Mtexels/sec
Difference: 55712 (30%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 7990 is superior to the GeForce GTX Titan, and very much so. (explain)

Radeon HD 7990 60800 Mpixels/sec
GeForce GTX Titan 40176 Mpixels/sec
Difference: 20624 (51%)

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 Titan

Amazon.com

Radeon HD 7990

Amazon.com

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 Titan Radeon HD 7990
Manufacturer nVidia AMD
Year February 2013 April 2013
Code Name GK110 Malta
Memory 6144 MB 3072 MB (x2)
Core Speed 837 MHz 950 MHz (x2)
Memory Speed 6008 MHz 6000 MHz (x2)
Power (Max TDP) 250 watts 375 watts
Bandwidth 288384 MB/sec 576000 MB/sec
Texel Rate 187488 Mtexels/sec 243200 Mtexels/sec
Pixel Rate 40176 Mpixels/sec 60800 Mpixels/sec
Unified Shaders 2688 2048 (x2)
Texture Mapping Units 224 128 (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 4.3 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GTX Titan

Amazon.com

Radeon HD 7990

Amazon.com

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

13 Responses to “GeForce GTX Titan vs Radeon HD 7990”
Gareth says:

The Titan is a strong card on paper but with only one GPU core that is so strong it’s not as strong as a 7990. 7990 features 6GB GDDR5 memory the same as the Titan so I ask why and how can it be faster than the Titan? It’s very simple. The Titan has only one GPU running at 384 bit and its amazing how fast It can process information, but the 7990 has a Dual Core GPU each running at 384 bit’s of bandwidth splitting the work and easing the tension on the cores. If they brought out the Titan x2 I.E the Titan with Dual Core GPU each at 384bit’s it would be a mach for the 7990, but for now the 7990 is the superior card. Also a card to look at is the GTX 690!!!

edson says:

so compara 7990 with 690 gtx that is a dual gpu too and close your mouth

Anonymous says:

Or compare a gtx Titan sli to the 7990. That's 2 gpus.

Tommy says:

Compare price of 2x titan to 7990 😉

Anonymous says:

If you compare the Titan in sli you also have to compare the costs of both. 2 Titans will run you around 2 grand without tax and for that cost you can also get 2 7990s with a few hundred bucks left over, So make your pick.

Sovak says:

Just wait for GTX 790 will be double titan, and you are comparing SINGLE graphic card to a dual - which is retarded ...

Helel says:

LOL 7990 is a way STRONGER then titan.

....and the price of 7990 is like half of titan.

So, why I have to pick titan? LOL. I'll pick 7990 of course XDD

John Cock says:

I Wipe My Ass With Titans

Solomeo says:

yeah idiots wait for titan x2 and compare the price xD at least they will sell that card for 1.800 USD

D00ms0ldier says:

In all logical terms the 7970 may have more power but it still comes down to drivers, nvidia drivers have always been more stable and draw out more and more performance with each consecutive update where as the drivers for AMD cards always play up and throw 40% of the cards performance out the window before its even doing anything. So when it comes right down practical application instead of theoretical performance, nvidia cards will always come out on top until good solid drivers come out for AMD

dd says:

gtx titan is suck!!

Anonymous says:

7990 is essentially 2 7970s on one card ,so instead of looking at this compare the titan to two 7970s in crossfire and, honestly both "suck" as two 7970s cost less than the 7990 and the 780ti costs less than a titan and is equally, if not more, powerfull.

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