GeForce 8800 GTX vs GeForce GTX 460 1GB

Intro

Compare those specs to the GeForce GTX 460 1GB, which makes use of a 40 nm design. nVidia has clocked the core frequency at 675 MHz. The GDDR5 memory runs at a frequency 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 GTX		155 Watts
GeForce GTX 460 1GB		160 Watts
	Difference: 5 Watts (3%)

Memory Bandwidth

In theory, the GeForce GTX 460 1GB should be 33% faster than the GeForce 8800 GTX overall, due to its higher data rate. (explain)

GeForce GTX 460 1GB		115200 MB/sec
GeForce 8800 GTX		86400 MB/sec
	Difference: 28800 (33%)

Texel Rate

The GeForce GTX 460 1GB will be a small bit (approximately 3%) faster with regards to texture filtering than the GeForce 8800 GTX. (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
GeForce 8800 GTX		36800 Mtexels/sec
	Difference: 1000 (3%)

Pixel Rate

The GeForce GTX 460 1GB should be a lot (approximately 57%) faster with regards to FSAA than the GeForce 8800 GTX, and should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
GeForce 8800 GTX		13800 Mpixels/sec
	Difference: 7800 (57%)

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 largest amount of information (in units of MB per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on 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 ability to reach the maximum fill rate.