Radeon R9 390X 8G vs Radeon RX 6750 XT

Intro

Compare those specs to the Radeon RX 6750 XT, which features a GPU core clock speed of 2150 MHz, and 12288 MB of GDDR6 memory running at 2250 MHz through a 192-bit bus. It also is comprised of 2560 SPUs, 160 TAUs, and 64 ROPs.

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

Performance-wise, the Radeon RX 6750 XT should in theory be just a bit superior to 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 will be quite a bit (approximately 86%) better at AF 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

If running with a high screen resolution is important to you, then the Radeon RX 6750 XT is superior to the Radeon R9 390X 8G, by far. (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 largest amount of information (measured in MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number is calculated 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.