GeForce RTX 3090 vs Geforce GTX 690

Intro

Compare those specs to the Geforce GTX 690, which features GPU clock speed of 915 MHz, and 2048 MB of GDDR5 RAM set to run at 1502 MHz through a 256-bit bus. It also is made up of 1536 Stream Processors, 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 3090		350 Watts
	Difference: 50 Watts (17%)

Memory Bandwidth

As far as performance goes, the GeForce RTX 3090 should theoretically be a lot superior to the Geforce GTX 690 in general. (explain)

GeForce RTX 3090		958668 MB/sec
Geforce GTX 690		384512 MB/sec
	Difference: 574156 (149%)

Texel Rate

The GeForce RTX 3090 will be much (about 95%) more effective at AF than the Geforce GTX 690. (explain)

GeForce RTX 3090		457560 Mtexels/sec
Geforce GTX 690		234240 Mtexels/sec
	Difference: 223320 (95%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce RTX 3090 is a better choice, by a large margin. (explain)

GeForce RTX 3090		156240 Mpixels/sec
Geforce GTX 690		58560 Mpixels/sec
	Difference: 97680 (167%)

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 max amount of information (in units of MB per second) that can be moved over the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.