GeForce 8800 GTS (G92) vs Geforce GTX 780

Intro

Compare that to the Geforce GTX 780, which has a core clock speed 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 comprised of 2304 SPUs, 192 TAUs, and 48 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G92)		135 Watts
Geforce GTX 780		250 Watts
	Difference: 115 Watts (85%)

Memory Bandwidth

In theory, the Geforce GTX 780 should be 365% faster than the GeForce 8800 GTS (G92) in general, due to its higher bandwidth. (explain)

Geforce GTX 780		288384 MB/sec
GeForce 8800 GTS (G92)		62080 MB/sec
	Difference: 226304 (365%)

Texel Rate

The Geforce GTX 780 should be much (about 298%) more effective at AF than the GeForce 8800 GTS (G92). (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce 8800 GTS (G92)		41600 Mtexels/sec
	Difference: 124096 (298%)

Pixel Rate

The Geforce GTX 780 should be a lot (approximately 298%) better at AA than the GeForce 8800 GTS (G92), and able to handle higher resolutions while still performing well. (explain)

Geforce GTX 780		41424 Mpixels/sec
GeForce 8800 GTS (G92)		10400 Mpixels/sec
	Difference: 31024 (298%)

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 megabytes per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR memory, it must 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, 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 maximum number of pixels that the graphics chip 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 amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called 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 of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.