GeForce 8800 GTS (G80) 320MB vs Geforce GTX 780

Intro

Compare all that to the Geforce GTX 780, which comes with a clock frequency of 863 MHz and a GDDR5 memory speed of 1502 MHz. It also uses a 384-bit bus, and makes use of a 28 nm design. It is made up of 2304 SPUs, 192 TAUs, and 48 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G80) 320MB		143 Watts
Geforce GTX 780		250 Watts
	Difference: 107 Watts (75%)

Memory Bandwidth

Theoretically, the Geforce GTX 780 should be much faster than the GeForce 8800 GTS (G80) 320MB in general. (explain)

Geforce GTX 780		288384 MB/sec
GeForce 8800 GTS (G80) 320MB		63360 MB/sec
	Difference: 225024 (355%)

Texel Rate

The Geforce GTX 780 should be much (approximately 573%) better at anisotropic filtering than the GeForce 8800 GTS (G80) 320MB. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
	Difference: 141072 (573%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Geforce GTX 780 is superior to the GeForce 8800 GTS (G80) 320MB, by far. (explain)

Geforce GTX 780		41424 Mpixels/sec
GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
	Difference: 31164 (304%)

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 information (measured in MB per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen 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 by the core clock speed of the chip. The higher this number, the better the graphics 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 graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.