GeForce 8800 GT 512MB vs Geforce GTX 770

Intro

Compare those specs to the Geforce GTX 770, which features GPU clock speed of 1046 MHz, and 2048 MB of GDDR5 RAM running at 1753 MHz through a 256-bit bus. It also is comprised of 1536 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 512MB		105 Watts
Geforce GTX 770		230 Watts
	Difference: 125 Watts (119%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 770 will be 290% faster than the GeForce 8800 GT 512MB overall, due to its higher bandwidth. (explain)

Geforce GTX 770		224384 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 166784 (290%)

Texel Rate

The Geforce GTX 770 will be quite a bit (more or less 298%) more effective at AF than the GeForce 8800 GT 512MB. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce 8800 GT 512MB		33600 Mtexels/sec
	Difference: 100288 (298%)

Pixel Rate

The Geforce GTX 770 will be much (about 249%) faster with regards to anti-aliasing than the GeForce 8800 GT 512MB, and should be able to handle higher screen resolutions better. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce 8800 GT 512MB		9600 Mpixels/sec
	Difference: 23872 (249%)

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 max amount of data (counted in MB per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines 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 output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.