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

Intro

Compare those specs to the GeForce GTX Titan Black, which features GPU core speed of 889 MHz, and 6144 MB of GDDR5 RAM running at 1750 MHz through a 384-bit bus. It also is comprised of 2880 SPUs, 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

As far as performance goes, the GeForce GTX Titan Black should in theory be a lot better 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 is a lot (more or less 766%) better at AF 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 much (about 316%) more effective at AA than the GeForce 8800 GTS (G80) 640MB, and will be capable of handling higher resolutions more effectively. (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 maximum amount of information (measured in megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster 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 are processed in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.