GeForce 8800 GTS (G92) vs Geforce GTX 780

Intro

Compare that to the Geforce GTX 780, which comes with a core clock frequency of 863 MHz and a GDDR5 memory speed of 1502 MHz. It also uses a 384-bit memory bus, and uses a 28 nm design. It features 2304 SPUs, 192 Texture Address Units, and 48 ROPs.

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

As far as performance goes, the Geforce GTX 780 should theoretically be quite a bit better than the GeForce 8800 GTS (G92) in general. (explain)

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

Texel Rate

The Geforce GTX 780 will be quite a bit (about 298%) faster with regards to texture filtering 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

If running with lots of anti-aliasing is important to you, then the Geforce GTX 780 is the winner, by a large margin. (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: Bandwidth is the maximum amount of data (counted in MB per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.