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

Intro

Compare all of that to the GeForce GTX Titan Black, which comes with GPU clock 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 Raster Operation Units.

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

Performance-wise, the GeForce GTX Titan Black should in theory be quite a bit 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 much (about 766%) faster with regards to 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 should be a lot (approximately 316%) more effective at FSAA than the GeForce 8800 GTS (G80) 640MB, and also should be capable of handling higher screen resolutions without losing too much performance. (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: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of texture units of the card 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 processed per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.