Radeon R9 390X 8G vs Radeon RX 6750 XT

Intro

Compare all of that to the Radeon RX 6750 XT, which features core speeds of 2150 MHz on the GPU, and 2250 MHz on the 12288 MB of GDDR6 RAM. It features 2560 SPUs along with 160 Texture Address Units 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 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 much (more or less 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

The Radeon RX 6750 XT should be quite a bit (about 105%) faster with regards to full screen anti-aliasing than the Radeon R9 390X 8G, and should be capable of handling higher screen 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: Memory bandwidth is the max amount of data (in units of MB per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. If it uses 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 anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the video 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 amount of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.