GeForce 8800 GT 1GB vs GeForce 8800 GTS (G80) 640MB

Intro

Compare those specs to the GeForce 8800 GTS (G80) 640MB, which has a clock frequency of 513 MHz and a GDDR3 memory speed of 792 MHz. It also makes use of a 320-bit memory bus, and makes use of a 90 nm design. It is comprised of 96 SPUs, 48 TAUs, and 20 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 1GB		105 Watts
GeForce 8800 GTS (G80) 640MB		143 Watts
	Difference: 38 Watts (36%)

Memory Bandwidth

The GeForce 8800 GTS (G80) 640MB should theoretically be a bit faster than the GeForce 8800 GT 1GB in general. (explain)

GeForce 8800 GTS (G80) 640MB		63360 MB/sec
GeForce 8800 GT 1GB		57600 MB/sec
	Difference: 5760 (10%)

Texel Rate

The GeForce 8800 GT 1GB is much (about 36%) more effective at anisotropic filtering than the GeForce 8800 GTS (G80) 640MB. (explain)

GeForce 8800 GT 1GB		33600 Mtexels/sec
GeForce 8800 GTS (G80) 640MB		24624 Mtexels/sec
	Difference: 8976 (36%)

Pixel Rate

The GeForce 8800 GTS (G80) 640MB is a little bit (more or less 7%) more effective at anti-aliasing than the GeForce 8800 GT 1GB, and should be capable of handling higher screen resolutions while still performing well. (explain)

GeForce 8800 GTS (G80) 640MB		10260 Mpixels/sec
GeForce 8800 GT 1GB		9600 Mpixels/sec
	Difference: 660 (7%)

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 max amount of data (in units of megabytes per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the interface width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher 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 amount of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour 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 rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.