Geforce GTX 690 vs Radeon RX 6600 XT

Intro

Compare all of that to the Radeon RX 6600 XT, which comes with a GPU core clock speed of 1968 MHz, and 8192 MB of GDDR6 RAM running at 2000 MHz through a 128-bit bus. It also is made up of 2048 SPUs, 128 TAUs, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 XT		160 Watts
Geforce GTX 690		300 Watts
	Difference: 140 Watts (88%)

Memory Bandwidth

In theory, the Geforce GTX 690 will be 47% quicker than the Radeon RX 6600 XT overall, because of its greater bandwidth. (explain)

Geforce GTX 690		384512 MB/sec
Radeon RX 6600 XT		262144 MB/sec
	Difference: 122368 (47%)

Texel Rate

The Radeon RX 6600 XT will be a bit (more or less 8%) faster with regards to AF than the Geforce GTX 690. (explain)

Radeon RX 6600 XT		251904 Mtexels/sec
Geforce GTX 690		234240 Mtexels/sec
	Difference: 17664 (8%)

Pixel Rate

The Radeon RX 6600 XT should be much (about 115%) more effective at FSAA than the Geforce GTX 690, and also should be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon RX 6600 XT		125952 Mpixels/sec
Geforce GTX 690		58560 Mpixels/sec
	Difference: 67392 (115%)

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: Memory bandwidth is the max amount of data (in units of MB per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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