Radeon HD 7790 vs Radeon RX 6500 XT

Intro

Compare that to the Radeon RX 6500 XT, which uses a 6 nm design. AMD has set the core speed at 2200 MHz. The GDDR6 memory is set to run at a frequency of 2250 MHz on this particular model. It features 1024 SPUs as well as 64 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
Radeon RX 6500 XT		107 Watts
	Difference: 22 Watts (26%)

Memory Bandwidth

As far as performance goes, the Radeon RX 6500 XT should theoretically be much superior to the Radeon HD 7790 overall. (explain)

Radeon RX 6500 XT		147456 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 51456 (54%)

Texel Rate

The Radeon RX 6500 XT should be quite a bit (more or less 151%) faster with regards to anisotropic filtering than the Radeon HD 7790. (explain)

Radeon RX 6500 XT		140800 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 84800 (151%)

Pixel Rate

The Radeon RX 6500 XT is quite a bit (about 340%) faster with regards to full screen anti-aliasing than the Radeon HD 7790, and will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 54400 (340%)

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 largest amount of information (in units of MB per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. 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 can be applied per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling 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 chip could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.