GeForce GTX 465 vs GeForce GTX 560

Intro

Compare those specs to the GeForce GTX 560, which comes with GPU core speed of 810 MHz, and 1024 MB of GDDR5 memory running at 1001 MHz through a 256-bit bus. It also features 336 SPUs, 56 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560		150 Watts
GeForce GTX 465		200 Watts
	Difference: 50 Watts (33%)

Memory Bandwidth

In theory, the GeForce GTX 560 should be 25% faster than the GeForce GTX 465 in general, because of its greater data rate. (explain)

GeForce GTX 560		128128 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 25536 (25%)

Texel Rate

The GeForce GTX 560 will be quite a bit (more or less 70%) better at texture filtering than the GeForce GTX 465. (explain)

GeForce GTX 560		45360 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 18652 (70%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 560 is superior to the GeForce GTX 465, by a large margin. (explain)

GeForce GTX 560		25920 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 6496 (33%)

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 information (counted in MB per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.