Radeon HD 6990 vs Radeon RX 5700 XT 50th Anniversary Edition

Intro

Compare those specifications to the Radeon RX 5700 XT 50th Anniversary Edition, which uses a 7 nm design. AMD has set the core speed at 1680 MHz. The GDDR6 memory runs at a speed of 1750 MHz on this model. It features 2560 SPUs along with 160 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5700 XT 50th Anniversary Edition		235 Watts
Radeon HD 6990		375 Watts
	Difference: 140 Watts (60%)

Memory Bandwidth

The Radeon RX 5700 XT 50th Anniversary Edition should in theory perform a lot faster than the Radeon HD 6990 overall. (explain)

Radeon RX 5700 XT 50th Anniversary Edition		458752 MB/sec
Radeon HD 6990		320000 MB/sec
	Difference: 138752 (43%)

Texel Rate

The Radeon RX 5700 XT 50th Anniversary Edition should be much (more or less 69%) better at AF than the Radeon HD 6990. (explain)

Radeon RX 5700 XT 50th Anniversary Edition		268800 Mtexels/sec
Radeon HD 6990		159360 Mtexels/sec
	Difference: 109440 (69%)

Pixel Rate

The Radeon RX 5700 XT 50th Anniversary Edition is quite a bit (approximately 102%) faster with regards to AA than the Radeon HD 6990, and also able to handle higher resolutions without losing too much performance. (explain)

Radeon RX 5700 XT 50th Anniversary Edition		107520 Mpixels/sec
Radeon HD 6990		53120 Mpixels/sec
	Difference: 54400 (102%)

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 largest amount of information (measured in MB per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units by the core clock 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 processed in a second.

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