Radeon HD 6990 vs Radeon RX 5600

Intro

Compare all that to the Radeon RX 5600, which has core speeds of 1375 MHz on the GPU, and 1500 MHz on the 6144 MB of GDDR6 memory. It features 2048 SPUs along with 128 Texture Address Units and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5600		150 Watts
Radeon HD 6990		375 Watts
	Difference: 225 Watts (150%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6990 should in theory be just a bit superior to the Radeon RX 5600 in general. (explain)

Radeon HD 6990		320000 MB/sec
Radeon RX 5600		294912 MB/sec
	Difference: 25088 (9%)

Texel Rate

The Radeon RX 5600 should be a little bit (more or less 10%) better at texture filtering than the Radeon HD 6990. (explain)

Radeon RX 5600		176000 Mtexels/sec
Radeon HD 6990		159360 Mtexels/sec
	Difference: 16640 (10%)

Pixel Rate

The Radeon RX 5600 should be a lot (more or less 66%) better at AA than the Radeon HD 6990, and should be capable of handling higher resolutions more effectively. (explain)

Radeon RX 5600		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: Bandwidth is the max amount of data (in units of MB per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

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