GeForce 8800 GTS (G80) 320MB vs GeForce GTX 465

Intro

Compare those specifications to the GeForce GTX 465, which features a clock frequency of 607 MHz and a GDDR5 memory speed of 802 MHz. It also uses a 256-bit bus, and uses a 40 nm design. It features 352 SPUs, 44 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G80) 320MB		143 Watts
GeForce GTX 465		200 Watts
	Difference: 57 Watts (40%)

Memory Bandwidth

Theoretically, the GeForce GTX 465 should perform much faster than the GeForce 8800 GTS (G80) 320MB overall. (explain)

GeForce GTX 465		102592 MB/sec
GeForce 8800 GTS (G80) 320MB		63360 MB/sec
	Difference: 39232 (62%)

Texel Rate

The GeForce GTX 465 will be just a bit (more or less 8%) faster with regards to AF than the GeForce 8800 GTS (G80) 320MB. (explain)

GeForce GTX 465		26708 Mtexels/sec
GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
	Difference: 2084 (8%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 465 is the winner, by a large margin. (explain)

GeForce GTX 465		19424 Mpixels/sec
GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
	Difference: 9164 (89%)

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 max amount of information (in units of MB per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock 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 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 is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at handling 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 could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel 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 ability to get to the max fill rate.