GeForce GTX 465 vs Geforce GTX 690

Intro

Compare those specs to the Geforce GTX 690, which uses a 28 nm design. nVidia has clocked the core frequency at 915 MHz. The GDDR5 RAM is set to run at a frequency of 1502 MHz on this specific card. It features 1536 SPUs along with 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 465		200 Watts
Geforce GTX 690		300 Watts
	Difference: 100 Watts (50%)

Memory Bandwidth

In theory, the Geforce GTX 690 should be 275% quicker than the GeForce GTX 465 in general, due to its greater data rate. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 281920 (275%)

Texel Rate

The Geforce GTX 690 should be a lot (more or less 777%) better at AF than the GeForce GTX 465. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 207532 (777%)

Pixel Rate

The Geforce GTX 690 should be much (more or less 201%) more effective at full screen anti-aliasing than the GeForce GTX 465, and should be able to handle higher resolutions while still performing well. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 39136 (201%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of information (counted in megabytes per second) that can be transported past the external memory interface within a second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 again. If 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 high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 most pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.