GeForce 8800 GTS (G92) vs GeForce 9800 GTX

Intro

Compare those specifications to the GeForce 9800 GTX, which makes use of a 65 nm design. nVidia has set the core frequency at 675 MHz. The GDDR3 RAM runs at a speed of 1100 MHz on this specific model. It features 128 SPUs along with 64 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G92)		135 Watts
GeForce 9800 GTX		140 Watts
	Difference: 5 Watts (4%)

Memory Bandwidth

As far as performance goes, the GeForce 9800 GTX should theoretically be a small bit superior to the GeForce 8800 GTS (G92) in general. (explain)

GeForce 9800 GTX		70400 MB/sec
GeForce 8800 GTS (G92)		62080 MB/sec
	Difference: 8320 (13%)

Texel Rate

The GeForce 9800 GTX will be a small bit (about 4%) better at texture filtering than the GeForce 8800 GTS (G92). (explain)

GeForce 9800 GTX		43200 Mtexels/sec
GeForce 8800 GTS (G92)		41600 Mtexels/sec
	Difference: 1600 (4%)

Pixel Rate

The GeForce 9800 GTX is a bit (approximately 4%) faster with regards to full screen anti-aliasing than the GeForce 8800 GTS (G92), and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce 9800 GTX		10800 Mpixels/sec
GeForce 8800 GTS (G92)		10400 Mpixels/sec
	Difference: 400 (4%)

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 (counted in megabytes per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip 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 number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.