GeForce 8800 GTS (G80) 640MB vs GeForce GTX Titan Black

Intro

Compare those specs to the GeForce GTX Titan Black, which features a GPU core clock speed of 889 MHz, and 6144 MB of GDDR5 RAM set to run at 1750 MHz through a 384-bit bus. It also features 2880 Stream Processors, 240 TAUs, and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G80) 640MB		143 Watts
GeForce GTX Titan Black		250 Watts
	Difference: 107 Watts (75%)

Memory Bandwidth

The GeForce GTX Titan Black, in theory, should perform quite a bit faster than the GeForce 8800 GTS (G80) 640MB in general. (explain)

GeForce GTX Titan Black		336000 MB/sec
GeForce 8800 GTS (G80) 640MB		63360 MB/sec
	Difference: 272640 (430%)

Texel Rate

The GeForce GTX Titan Black will be much (about 766%) faster with regards to texture filtering than the GeForce 8800 GTS (G80) 640MB. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
GeForce 8800 GTS (G80) 640MB		24624 Mtexels/sec
	Difference: 188736 (766%)

Pixel Rate

The GeForce GTX Titan Black will be quite a bit (more or less 316%) better at AA than the GeForce 8800 GTS (G80) 640MB, and able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX Titan Black		42672 Mpixels/sec
GeForce 8800 GTS (G80) 640MB		10260 Mpixels/sec
	Difference: 32412 (316%)

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.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of information (measured in megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 processed per second. This is worked out by multiplying the total texture units of the card by the core clock 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.