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GeForce GTX 780 Ti vs Geforce GTX 690

Intro

The GeForce GTX 780 Ti features a core clock frequency of 875 MHz and a GDDR5 memory frequency of 1750 MHz. It also makes use of a 384-bit bus, and uses a 28 nm design. It features 2880 SPUs, 240 TAUs, and 48 Raster Operation Units.

Compare that to the Geforce GTX 690, which comes with core clock speeds of 915 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 780 Ti 250 Watts
Geforce GTX 690 300 Watts
Difference: 50 Watts (20%)

Memory Bandwidth

In theory, the Geforce GTX 690 should be 14% faster than the GeForce GTX 780 Ti in general, due to its higher data rate. (explain)

Geforce GTX 690 384512 MB/sec
GeForce GTX 780 Ti 336000 MB/sec
Difference: 48512 (14%)

Texel Rate

The Geforce GTX 690 is just a bit (more or less 12%) faster with regards to AF than the GeForce GTX 780 Ti. (explain)

Geforce GTX 690 234240 Mtexels/sec
GeForce GTX 780 Ti 210000 Mtexels/sec
Difference: 24240 (12%)

Pixel Rate

If running with a high resolution is important to you, then the Geforce GTX 690 is a better choice, by far. (explain)

Geforce GTX 690 58560 Mpixels/sec
GeForce GTX 780 Ti 42000 Mpixels/sec
Difference: 16560 (39%)

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

GeForce GTX 780 Ti

Amazon.com

Geforce GTX 690

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

Model GeForce GTX 780 Ti Geforce GTX 690
Manufacturer nVidia nVidia
Year November 2013 April 2012
Code Name GK110 GK104
Fab Process 28 nm 28 nm
Bus PCIe 3.0 x16 PCIe 3.0 x16
Memory 3072 MB 2048 MB (x2)
Core Speed 875 MHz 915 MHz (x2)
Shader Speed N/A MHz 915 MHz (x2)
Memory Speed 1750 MHz (7000 MHz effective) 1502 MHz (6008 MHz effective) (x2)
Unified Shaders 2880 1536 (x2)
Texture Mapping Units 240 128 (x2)
Render Output Units 48 32 (x2)
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit (x2)
DirectX Version DirectX 11.0 DirectX 11.0
OpenGL Version OpenGL 4.4 OpenGL 4.2
Power (Max TDP) 250 watts 300 watts
Shader Model 5.0 5.0
Bandwidth 336000 MB/sec 384512 MB/sec
Texel Rate 210000 Mtexels/sec 234240 Mtexels/sec
Pixel Rate 42000 Mpixels/sec 58560 Mpixels/sec

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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

Comments

8 Responses to “GeForce GTX 780 Ti vs Geforce GTX 690”
KRisz says:
LOL everyone says GTX 780Ti is the best GPU on the planet well if the would make a dualcore GTX 690 or they would put GTX 690 cores in GTX 780Ti than that would be the best and it's not 'that' hard to do...
KRisz says:
And GTX 690 is cheaper a lot
Thom says:
Nvidia said that the GTX 780 TI is the fastes SINGLE gpu on the planet.And also the 690 is a DUAL gpu card.The 960 also costs 300-400 more...
Thom says:
Sorry in the last sentence i wrote 960 but i ment 690
Mehran says:
I wanna Purchase this card , but How much money i have to purchase this!
Robert James Rindik says:
People, you must understand that the GeForce GTX 780 Ti is a single GPU graphics card where the GeForce GTX 690 is dual GPU graphics card.
The GeForce GTX 790 will also be dual GPU graphics card, and it will outlast any graphic cards by a lot.
Bob Stones says:
How much is the 690.
pepe says:
Look on ebay, gtx 690 awesome, 2 kepler gpu's :D

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