Radeon R9 390X 8G vs Radeon RX 6750 XT

Intro

Compare those specifications to the Radeon RX 6750 XT, which comes with a clock speed of 2150 MHz and a GDDR6 memory speed of 2250 MHz. It also features a 192-bit bus, and makes use of a 7 nm design. It is comprised of 2560 SPUs, 160 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6750 XT		250 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 25 Watts (10%)

Memory Bandwidth

In theory, the Radeon RX 6750 XT should perform a little bit faster than the Radeon R9 390X 8G in general. (explain)

Radeon RX 6750 XT		442368 MB/sec
Radeon R9 390X 8G		384000 MB/sec
	Difference: 58368 (15%)

Texel Rate

The Radeon RX 6750 XT is quite a bit (approximately 86%) better at texture filtering than the Radeon R9 390X 8G. (explain)

Radeon RX 6750 XT		344000 Mtexels/sec
Radeon R9 390X 8G		184800 Mtexels/sec
	Difference: 159200 (86%)

Pixel Rate

The Radeon RX 6750 XT will be quite a bit (more or less 105%) better at FSAA than the Radeon R9 390X 8G, and will be capable of handling higher resolutions while still performing well. (explain)

Radeon RX 6750 XT		137600 Mpixels/sec
Radeon R9 390X 8G		67200 Mpixels/sec
	Difference: 70400 (105%)

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 information (measured in megabytes per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, 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 amount of texture map elements (texels) that can be processed per second. This figure 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 graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.