GeForce 8800 Ultra vs GeForce GTX 295

Intro

Compare all that to the GeForce GTX 295, which has GPU clock speed of 576 MHz, and 896 MB of GDDR3 RAM set to run at 999 MHz through a 448-bit bus. It also is made up of 240 Stream Processors, 80 Texture Address Units, and 28 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 Ultra		171 Watts
GeForce GTX 295		289 Watts
	Difference: 118 Watts (69%)

Memory Bandwidth

The GeForce GTX 295 should in theory be quite a bit faster than the GeForce 8800 Ultra in general. (explain)

GeForce GTX 295		223776 MB/sec
GeForce 8800 Ultra		103680 MB/sec
	Difference: 120096 (116%)

Texel Rate

The GeForce GTX 295 will be a lot (about 135%) more effective at anisotropic filtering than the GeForce 8800 Ultra. (explain)

GeForce GTX 295		92160 Mtexels/sec
GeForce 8800 Ultra		39168 Mtexels/sec
	Difference: 52992 (135%)

Pixel Rate

The GeForce GTX 295 will be much (about 120%) faster with regards to full screen anti-aliasing than the GeForce 8800 Ultra, and also will be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 295		32256 Mpixels/sec
GeForce 8800 Ultra		14688 Mpixels/sec
	Difference: 17568 (120%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster 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 are processed in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.