Radeon R9 270X vs Radeon RX 6500 XT

Intro

Compare all of that to the Radeon RX 6500 XT, which has core clock speeds of 2200 MHz on the GPU, and 2250 MHz on the 4096 MB of GDDR6 RAM. It features 1024 SPUs along with 64 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
Radeon R9 270X		180 Watts
	Difference: 73 Watts (68%)

Memory Bandwidth

Theoretically, the Radeon R9 270X should be quite a bit faster than the Radeon RX 6500 XT overall. (explain)

Radeon R9 270X		179200 MB/sec
Radeon RX 6500 XT		147456 MB/sec
	Difference: 31744 (22%)

Texel Rate

The Radeon RX 6500 XT will be a lot (more or less 76%) faster with regards to anisotropic filtering than the Radeon R9 270X. (explain)

Radeon RX 6500 XT		140800 Mtexels/sec
Radeon R9 270X		80000 Mtexels/sec
	Difference: 60800 (76%)

Pixel Rate

The Radeon RX 6500 XT should be much (more or less 120%) more effective at full screen anti-aliasing than the Radeon R9 270X, and also able to handle higher screen resolutions better. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
Radeon R9 270X		32000 Mpixels/sec
	Difference: 38400 (120%)

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 (counted in MB per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate 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 filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.