GeForce 8800 GT 1GB vs Geforce GTX 780

Intro

Compare those specs to the Geforce GTX 780, which features clock speeds of 863 MHz on the GPU, and 1502 MHz on the 3072 MB of GDDR5 RAM. It features 2304 SPUs as well as 192 TAUs and 48 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 1GB		105 Watts
Geforce GTX 780		250 Watts
	Difference: 145 Watts (138%)

Memory Bandwidth

The Geforce GTX 780 should theoretically perform much faster than the GeForce 8800 GT 1GB overall. (explain)

Geforce GTX 780		288384 MB/sec
GeForce 8800 GT 1GB		57600 MB/sec
	Difference: 230784 (401%)

Texel Rate

The Geforce GTX 780 is much (more or less 393%) faster with regards to AF than the GeForce 8800 GT 1GB. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce 8800 GT 1GB		33600 Mtexels/sec
	Difference: 132096 (393%)

Pixel Rate

The Geforce GTX 780 will be quite a bit (about 332%) better at FSAA than the GeForce 8800 GT 1GB, and also should be capable of handling higher resolutions without slowing down too much. (explain)

Geforce GTX 780		41424 Mpixels/sec
GeForce 8800 GT 1GB		9600 Mpixels/sec
	Difference: 31824 (332%)

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 max amount of data (in units of MB per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the 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 clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. 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.