GeForce 8800 GT 1GB vs GeForce GTX 285 1GB

Intro

Compare those specs to the GeForce GTX 285 1GB, which has GPU core speed of 648 MHz, and 1024 MB of GDDR3 memory running at 1242 MHz through a 512-bit bus. It also features 240 SPUs, 80 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 1GB		105 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 99 Watts (94%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 285 1GB should perform much faster than the GeForce 8800 GT 1GB in general. (explain)

GeForce GTX 285 1GB		158976 MB/sec
GeForce 8800 GT 1GB		57600 MB/sec
	Difference: 101376 (176%)

Texel Rate

The GeForce GTX 285 1GB will be much (approximately 54%) faster with regards to texture filtering than the GeForce 8800 GT 1GB. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
GeForce 8800 GT 1GB		33600 Mtexels/sec
	Difference: 18240 (54%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 285 1GB is a better choice, and very much so. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
GeForce 8800 GT 1GB		9600 Mpixels/sec
	Difference: 11136 (116%)

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 MB per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units 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 a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.