GeForce RTX 3080 12 GB vs Geforce GTX 690

Intro

Compare those specs to the Geforce GTX 690, which comes with a GPU core clock speed of 915 MHz, and 2048 MB of GDDR5 RAM running at 1502 MHz through a 256-bit bus. It also is made up of 1536 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 690		300 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 50 Watts (17%)

Memory Bandwidth

Theoretically, the GeForce RTX 3080 12 GB should be quite a bit faster than the Geforce GTX 690 in general. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Geforce GTX 690		384512 MB/sec
	Difference: 549786 (143%)

Texel Rate

The GeForce RTX 3080 12 GB is a lot (approximately 51%) better at AF than the Geforce GTX 690. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Geforce GTX 690		234240 Mtexels/sec
	Difference: 118560 (51%)

Pixel Rate

The GeForce RTX 3080 12 GB will be much (about 141%) faster with regards to FSAA than the Geforce GTX 690, and also will be capable of handling higher resolutions better. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Geforce GTX 690		58560 Mpixels/sec
	Difference: 82560 (141%)

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 information (counted in MB per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.