Radeon RX 470 4GB vs Radeon RX 7900 XT

Intro

Compare all that to the Radeon RX 7900 XT, which makes use of a 5 nm design. AMD has clocked the core speed at 1500 MHz. The GDDR6 RAM works at a speed of 2500 MHz on this card. It features 5376 SPUs along with 336 Texture Address Units and 192 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 4GB		120 Watts
Radeon RX 7900 XT		300 Watts
	Difference: 180 Watts (150%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 7900 XT is 288% faster than the Radeon RX 470 4GB overall, due to its greater bandwidth. (explain)

Radeon RX 7900 XT		819200 MB/sec
Radeon RX 470 4GB		211200 MB/sec
	Difference: 608000 (288%)

Texel Rate

The Radeon RX 7900 XT will be a lot (more or less 325%) faster with regards to anisotropic filtering than the Radeon RX 470 4GB. (explain)

Radeon RX 7900 XT		504000 Mtexels/sec
Radeon RX 470 4GB		118528 Mtexels/sec
	Difference: 385472 (325%)

Pixel Rate

The Radeon RX 7900 XT is quite a bit (approximately 872%) better at anti-aliasing than the Radeon RX 470 4GB, and able to handle higher resolutions while still performing well. (explain)

Radeon RX 7900 XT		288000 Mpixels/sec
Radeon RX 470 4GB		29632 Mpixels/sec
	Difference: 258368 (872%)

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: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is worked out by multiplying the total amount of texture units of the card by the core clock 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 processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. 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 bandwidth is, the lower the ability to get to the maximum fill rate.