GeForce 8800 GS vs Geforce GTX 680

Intro

Compare all of that to the Geforce GTX 680, which makes use of a 28 nm design. nVidia has clocked the core speed at 1006 MHz. The GDDR5 memory is set to run at a speed of 1502 MHz on this card. It features 1536 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GS		105 Watts
Geforce GTX 680		195 Watts
	Difference: 90 Watts (86%)

Memory Bandwidth

Performance-wise, the Geforce GTX 680 should theoretically be quite a bit better than the GeForce 8800 GS in general. (explain)

Geforce GTX 680		192256 MB/sec
GeForce 8800 GS		38400 MB/sec
	Difference: 153856 (401%)

Texel Rate

The Geforce GTX 680 is much (more or less 388%) better at texture filtering than the GeForce 8800 GS. (explain)

Geforce GTX 680		128768 Mtexels/sec
GeForce 8800 GS		26400 Mtexels/sec
	Difference: 102368 (388%)

Pixel Rate

The Geforce GTX 680 will be quite a bit (more or less 388%) more effective at AA than the GeForce 8800 GS, and will be able to handle higher screen resolutions without slowing down too much. (explain)

Geforce GTX 680		32192 Mpixels/sec
GeForce 8800 GS		6600 Mpixels/sec
	Difference: 25592 (388%)

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 largest amount of data (measured in MB per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total number of texture units of the card by the core 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated 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 filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.