GeForce 8800 GTX vs GeForce GTX 465

Intro

Compare all that to the GeForce GTX 465, which has core clock speeds of 607 MHz on the GPU, and 802 MHz on the 1024 MB of GDDR5 RAM. It features 352 SPUs as well as 44 TAUs and 32 ROPs.

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

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

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

Texel Rate

The GeForce 8800 GTX will be a lot (approximately 38%) better at anisotropic filtering than the GeForce GTX 465. (explain)

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

Pixel Rate

The GeForce GTX 465 is much (approximately 41%) more effective at AA than the GeForce 8800 GTX, and also will be capable of handling higher screen resolutions more effectively. (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: Bandwidth is the max amount of data (in units of MB per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the card will be at 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 graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core 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, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.