GeForce 8800 GT 256MB vs GeForce GTX 460 1GB

Intro

Compare those specifications to the GeForce GTX 460 1GB, which makes use of a 40 nm design. nVidia has set the core speed at 675 MHz. The GDDR5 RAM runs at a speed of 900 MHz on this specific card. It features 336 SPUs as well as 56 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 256MB		105 Watts
GeForce GTX 460 1GB		160 Watts
	Difference: 55 Watts (52%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 1GB will be 157% faster than the GeForce 8800 GT 256MB in general, because of its greater bandwidth. (explain)

GeForce GTX 460 1GB		115200 MB/sec
GeForce 8800 GT 256MB		44800 MB/sec
	Difference: 70400 (157%)

Texel Rate

The GeForce GTX 460 1GB should be a bit (more or less 13%) faster with regards to AF than the GeForce 8800 GT 256MB. (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
GeForce 8800 GT 256MB		33600 Mtexels/sec
	Difference: 4200 (13%)

Pixel Rate

The GeForce GTX 460 1GB will be much (approximately 125%) faster with regards to anti-aliasing than the GeForce 8800 GT 256MB, and also should be able to handle higher screen resolutions better. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
GeForce 8800 GT 256MB		9600 Mpixels/sec
	Difference: 12000 (125%)

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 largest amount of data (counted in MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 once 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 amount of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's 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 rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.