GeForce 8800 Ultra vs GeForce GTX 460

Intro

Compare those specs to the GeForce GTX 460, which comes with GPU core speed of 675 MHz, and 768 MB of GDDR5 memory set to run at 900 MHz through a 192-bit bus. It also is made up of 336 Stream Processors, 56 Texture Address Units, and 24 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460		150 Watts
GeForce 8800 Ultra		171 Watts
	Difference: 21 Watts (14%)

Memory Bandwidth

As far as performance goes, the GeForce 8800 Ultra should theoretically be just a bit better than the GeForce GTX 460 overall. (explain)

GeForce 8800 Ultra		103680 MB/sec
GeForce GTX 460		86400 MB/sec
	Difference: 17280 (20%)

Texel Rate

The GeForce 8800 Ultra will be a small bit (approximately 4%) faster with regards to AF than the GeForce GTX 460. (explain)

GeForce 8800 Ultra		39168 Mtexels/sec
GeForce GTX 460		37800 Mtexels/sec
	Difference: 1368 (4%)

Pixel Rate

The GeForce GTX 460 will be a small bit (more or less 10%) more effective at anti-aliasing than the GeForce 8800 Ultra, and should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 460		16200 Mpixels/sec
GeForce 8800 Ultra		14688 Mpixels/sec
	Difference: 1512 (10%)

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

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

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