Radeon HD 6790 vs Radeon RX 5500

Intro

Compare all of that to the Radeon RX 5500, which has a GPU core clock speed of 1670 MHz, and 4096 MB of GDDR6 memory set to run at 1750 MHz through a 128-bit bus. It also features 1408 SPUs, 88 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

In theory, the Radeon RX 5500 will be 71% faster than the Radeon HD 6790 overall, because of its greater bandwidth. (explain)

Radeon RX 5500		229376 MB/sec
Radeon HD 6790		134400 MB/sec
	Difference: 94976 (71%)

Texel Rate

The Radeon RX 5500 should be much (approximately 337%) faster with regards to anisotropic filtering than the Radeon HD 6790. (explain)

Radeon RX 5500		146960 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 113360 (337%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 5500 is superior to the Radeon HD 6790, by far. (explain)

Radeon RX 5500		53440 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 40000 (298%)

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.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of data (in units of megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per 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 processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.