GeForce RTX 3060 vs Radeon HD 6990

Intro

Compare those specs to the Radeon HD 6990, which features a GPU core clock speed of 830 MHz, and 2048 MB of GDDR5 memory set to run at 1250 MHz through a 256-bit bus. It also features 1536 SPUs, 96 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 3060		170 Watts
Radeon HD 6990		375 Watts
	Difference: 205 Watts (121%)

Memory Bandwidth

Theoretically, the GeForce RTX 3060 should perform a small bit faster than the Radeon HD 6990 overall. (explain)

GeForce RTX 3060		368640 MB/sec
Radeon HD 6990		320000 MB/sec
	Difference: 48640 (15%)

Texel Rate

The Radeon HD 6990 will be a bit (more or less 8%) better at texture filtering than the GeForce RTX 3060. (explain)

Radeon HD 6990		159360 Mtexels/sec
GeForce RTX 3060		147840 Mtexels/sec
	Difference: 11520 (8%)

Pixel Rate

The GeForce RTX 3060 will be just a bit (more or less 19%) better at full screen anti-aliasing than the Radeon HD 6990, and also able to handle higher screen resolutions without slowing down too much. (explain)

GeForce RTX 3060		63360 Mpixels/sec
Radeon HD 6990		53120 Mpixels/sec
	Difference: 10240 (19%)

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 in one second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR 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 texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.