GeForce GTX 465 vs GeForce GTX 660 Ti

Intro

Compare those specifications to the GeForce GTX 660 Ti, which has a core clock speed of 915 MHz and a GDDR5 memory frequency of 1500 MHz. It also makes use of a 192-bit memory bus, and uses a 28 nm design. It features 1344 SPUs, 112 Texture Address Units, 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

In theory, the GeForce GTX 660 Ti should perform a lot faster than the GeForce GTX 465 in general. (explain)

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

Texel Rate

The GeForce GTX 660 Ti is much (more or less 284%) faster with regards to anisotropic 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 is a small bit (approximately 13%) better at FSAA than the GeForce GTX 465, and should be able to handle higher resolutions without losing too much performance. (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 megabytes per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 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 anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better 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 most pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines 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 rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.