GeForce 9800 GX2 vs GeForce GTX Titan Black

Intro

Compare those specs to the GeForce GTX Titan Black, which comes with a clock speed of 889 MHz and a GDDR5 memory frequency of 1750 MHz. It also makes use of a 384-bit memory bus, and uses a 28 nm design. It is made up of 2880 SPUs, 240 Texture Address Units, and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

As far as performance goes, the GeForce GTX Titan Black should theoretically be a lot better than the GeForce 9800 GX2 in general. (explain)

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

Texel Rate

The GeForce GTX Titan Black is a lot (approximately 178%) faster with regards to AF than the GeForce 9800 GX2. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
GeForce 9800 GX2		76800 Mtexels/sec
	Difference: 136560 (178%)

Pixel Rate

The GeForce GTX Titan Black is much (about 122%) more effective at FSAA than the GeForce 9800 GX2, and also able to handle higher resolutions better. (explain)

GeForce GTX Titan Black		42672 Mpixels/sec
GeForce 9800 GX2		19200 Mpixels/sec
	Difference: 23472 (122%)

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: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved over the external memory interface in 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, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better 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 number of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of 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 the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.