GeForce 8800 GT 512MB vs GeForce 8800 GTS (G80) 320MB

Intro

Compare those specs to the GeForce 8800 GTS (G80) 320MB, which features a core clock speed of 513 MHz and a GDDR3 memory frequency of 792 MHz. It also features a 320-bit memory bus, and uses a 90 nm design. It is comprised of 96 SPUs, 48 TAUs, and 20 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 512MB		105 Watts
GeForce 8800 GTS (G80) 320MB		143 Watts
	Difference: 38 Watts (36%)

Memory Bandwidth

In theory, the GeForce 8800 GTS (G80) 320MB is 10% quicker than the GeForce 8800 GT 512MB overall, due to its greater data rate. (explain)

GeForce 8800 GTS (G80) 320MB		63360 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 5760 (10%)

Texel Rate

The GeForce 8800 GT 512MB is much (about 36%) faster with regards to anisotropic filtering than the GeForce 8800 GTS (G80) 320MB. (explain)

GeForce 8800 GT 512MB		33600 Mtexels/sec
GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
	Difference: 8976 (36%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce 8800 GTS (G80) 320MB is superior to the GeForce 8800 GT 512MB, but only just. (explain)

GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
GeForce 8800 GT 512MB		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: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 are processed per second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the 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 most pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.