GeForce GTX 465 vs GeForce GTX 660 Ti

Intro

Compare those specs to the GeForce GTX 660 Ti, which comes with GPU core speed of 915 MHz, and 2048 MB of GDDR5 RAM set to run at 1500 MHz through a 192-bit bus. It also is made up of 1344 Stream Processors, 112 TAUs, and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti		150 Watts
GeForce GTX 465		200 Watts
	Difference: 50 Watts (33%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 660 Ti should be 40% quicker than the GeForce GTX 465 overall, because of its higher bandwidth. (explain)

GeForce GTX 660 Ti		144000 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 41408 (40%)

Texel Rate

The GeForce GTX 660 Ti will be a lot (about 284%) better at texture filtering than the GeForce GTX 465. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 75772 (284%)

Pixel Rate

The GeForce GTX 660 Ti should be just a bit (about 13%) more effective at anti-aliasing than the GeForce GTX 465, and also able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 2536 (13%)

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 (measured in MB per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 is worked out by multiplying the total amount of texture units by the core 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 applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.