GeForce 9800 GX2 vs GeForce GTX Titan X

Intro

Compare those specs to the GeForce GTX Titan X, which makes use of a 28 nm design. nVidia has set the core speed at 1000 MHz. The GDDR5 memory works at a frequency of 1750 MHz on this card. It features 3072 SPUs as well as 192 Texture Address Units and 96 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GX2		197 Watts
GeForce GTX Titan X		250 Watts
	Difference: 53 Watts (27%)

Memory Bandwidth

In theory, the GeForce GTX Titan X should perform much faster than the GeForce 9800 GX2 in general. (explain)

GeForce GTX Titan X		336000 MB/sec
GeForce 9800 GX2		128000 MB/sec
	Difference: 208000 (163%)

Texel Rate

The GeForce GTX Titan X is a lot (about 150%) better at anisotropic filtering than the GeForce 9800 GX2. (explain)

GeForce GTX Titan X		192000 Mtexels/sec
GeForce 9800 GX2		76800 Mtexels/sec
	Difference: 115200 (150%)

Pixel Rate

The GeForce GTX Titan X is much (approximately 400%) more effective at FSAA than the GeForce 9800 GX2, and will be able to handle higher screen resolutions better. (explain)

GeForce GTX Titan X		96000 Mpixels/sec
GeForce 9800 GX2		19200 Mpixels/sec
	Difference: 76800 (400%)

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

Specifications

Memory Bandwidth: Bandwidth is the largest amount of data (measured in MB per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 texture map elements (texels) that are applied in one second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the 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 per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.