GeForce 8800 Ultra vs GeForce GTX 465

Intro

Compare those specs to the GeForce GTX 465, which comes with a core clock frequency of 607 MHz and a GDDR5 memory frequency of 802 MHz. It also features a 256-bit memory bus, and makes use of a 40 nm design. It is comprised of 352 SPUs, 44 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 Ultra		171 Watts
GeForce GTX 465		200 Watts
	Difference: 29 Watts (17%)

Memory Bandwidth

The GeForce 8800 Ultra, in theory, should be just a bit faster than the GeForce GTX 465 in general. (explain)

GeForce 8800 Ultra		103680 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 1088 (1%)

Texel Rate

The GeForce 8800 Ultra will be a lot (about 47%) faster with regards to anisotropic filtering than the GeForce GTX 465. (explain)

GeForce 8800 Ultra		39168 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 12460 (47%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 465 is superior to the GeForce 8800 Ultra, and very much so. (explain)

GeForce GTX 465		19424 Mpixels/sec
GeForce 8800 Ultra		14688 Mpixels/sec
	Difference: 4736 (32%)

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 maximum amount of information (in units of megabytes per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, 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 number of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the card's clock speed. 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 rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.