GeForce GTX 465 vs GeForce GTX 560

Intro

Compare those specifications to the GeForce GTX 560, which features GPU core speed of 810 MHz, and 1024 MB of GDDR5 memory set to run at 1001 MHz through a 256-bit bus. It also features 336 Stream Processors, 56 Texture Address Units, 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

As far as performance goes, the GeForce GTX 560 should theoretically be quite a bit better than the GeForce GTX 465 overall. (explain)

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

Texel Rate

The GeForce GTX 560 should be a lot (about 70%) faster with regards to AF than the GeForce GTX 465. (explain)

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

Pixel Rate

The GeForce GTX 560 will be a lot (about 33%) more effective at full screen anti-aliasing than the GeForce GTX 465, and will be able to handle higher screen resolutions more effectively. (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: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at 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 record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.