GeForce 8800 GTX vs GeForce GTX 465

Intro

Compare those specifications to the GeForce GTX 465, which features GPU clock speed of 607 MHz, and 1024 MB of GDDR5 memory set to run at 802 MHz through a 256-bit bus. It also is comprised of 352 Stream Processors, 44 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTX		155 Watts
GeForce GTX 465		200 Watts
	Difference: 45 Watts (29%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 465 should in theory be a bit superior to the GeForce 8800 GTX overall. (explain)

GeForce GTX 465		102592 MB/sec
GeForce 8800 GTX		86400 MB/sec
	Difference: 16192 (19%)

Texel Rate

The GeForce 8800 GTX should be a lot (more or less 38%) better at texture filtering than the GeForce GTX 465. (explain)

GeForce 8800 GTX		36800 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 10092 (38%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 465 is a better choice, and very much so. (explain)

GeForce GTX 465		19424 Mpixels/sec
GeForce 8800 GTX		13800 Mpixels/sec
	Difference: 5624 (41%)

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 (measured in megabytes per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR memory, it must 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 AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total number of texture units of the card by the core 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 applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units 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 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.