GeForce 8800 GTS (G92) vs GeForce GTS 450 1GB

Intro

Compare those specs to the GeForce GTS 450 1GB, which uses a 40 nm design. nVidia has clocked the core frequency at 783 MHz. The GDDR5 memory runs at a frequency of 902 MHz on this specific model. It features 192 SPUs as well as 32 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB		106 Watts
GeForce 8800 GTS (G92)		135 Watts
	Difference: 29 Watts (27%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 GTS (G92) is 8% faster than the GeForce GTS 450 1GB in general, because of its greater bandwidth. (explain)

GeForce 8800 GTS (G92)		62080 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 4352 (8%)

Texel Rate

The GeForce 8800 GTS (G92) should be a lot (more or less 66%) more effective at AF than the GeForce GTS 450 1GB. (explain)

GeForce 8800 GTS (G92)		41600 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 16544 (66%)

Pixel Rate

The GeForce GTS 450 1GB will be just a bit (more or less 20%) better at full screen anti-aliasing than the GeForce 8800 GTS (G92), and should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTS 450 1GB		12528 Mpixels/sec
GeForce 8800 GTS (G92)		10400 Mpixels/sec
	Difference: 2128 (20%)

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 (in units of megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at handling 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 that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number 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 outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.