GeForce 8800 GS vs GeForce 8800 GTS (G80) 320MB

Intro

Compare that to the GeForce 8800 GTS (G80) 320MB, which uses a 90 nm design. nVidia has clocked the core frequency at 513 MHz. The GDDR3 memory works at a frequency of 792 MHz on this particular model. It features 96 SPUs along with 48 Texture Address Units and 20 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GS		105 Watts
GeForce 8800 GTS (G80) 320MB		143 Watts
	Difference: 38 Watts (36%)

Memory Bandwidth

Theoretically, the GeForce 8800 GTS (G80) 320MB should perform a lot faster than the GeForce 8800 GS overall. (explain)

GeForce 8800 GTS (G80) 320MB		63360 MB/sec
GeForce 8800 GS		38400 MB/sec
	Difference: 24960 (65%)

Texel Rate

The GeForce 8800 GS is a bit (about 7%) more effective at anisotropic filtering than the GeForce 8800 GTS (G80) 320MB. (explain)

GeForce 8800 GS		26400 Mtexels/sec
GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
	Difference: 1776 (7%)

Pixel Rate

The GeForce 8800 GTS (G80) 320MB should be a lot (approximately 55%) better at full screen anti-aliasing than the GeForce 8800 GS, and also should be able to handle higher resolutions better. (explain)

GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
GeForce 8800 GS		6600 Mpixels/sec
	Difference: 3660 (55%)

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 information (in units of megabytes per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher 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 number of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the card will be at 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 the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core speed of the card. 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 rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.