Radeon HD 6990 vs Radeon RX 5600 XT

Intro

Compare all of that to the Radeon RX 5600 XT, which features a clock frequency of 1375 MHz and a GDDR6 memory speed of 1500 MHz. It also makes use of a 192-bit memory bus, and makes use of a 7 nm design. It features 2304 SPUs, 144 TAUs, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5600 XT		160 Watts
Radeon HD 6990		375 Watts
	Difference: 215 Watts (134%)

Memory Bandwidth

As far as performance goes, the Radeon RX 5600 XT should theoretically be a little bit superior to the Radeon HD 6990 overall. (explain)

Radeon RX 5600 XT		344064 MB/sec
Radeon HD 6990		320000 MB/sec
	Difference: 24064 (8%)

Texel Rate

The Radeon RX 5600 XT should be quite a bit (about 24%) more effective at anisotropic filtering than the Radeon HD 6990. (explain)

Radeon RX 5600 XT		198000 Mtexels/sec
Radeon HD 6990		159360 Mtexels/sec
	Difference: 38640 (24%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 5600 XT is a better choice, by a large margin. (explain)

Radeon RX 5600 XT		88000 Mpixels/sec
Radeon HD 6990		53120 Mpixels/sec
	Difference: 34880 (66%)

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 maximum amount of data (counted in MB per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video 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 amount of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.