Radeon R9 270 vs Radeon RX 6500 XT

Intro

Compare those specs to the Radeon RX 6500 XT, which has GPU core speed of 2200 MHz, and 4096 MB of GDDR6 RAM running at 2250 MHz through a 64-bit bus. It also is comprised of 1024 Stream Processors, 64 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
Radeon R9 270		150 Watts
	Difference: 43 Watts (40%)

Memory Bandwidth

Performance-wise, the Radeon R9 270 should in theory be much superior to the Radeon RX 6500 XT overall. (explain)

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

Texel Rate

The Radeon RX 6500 XT will be much (more or less 96%) better at anisotropic filtering than the Radeon R9 270. (explain)

Radeon RX 6500 XT		140800 Mtexels/sec
Radeon R9 270		72000 Mtexels/sec
	Difference: 68800 (96%)

Pixel Rate

The Radeon RX 6500 XT is quite a bit (more or less 144%) more effective at full screen anti-aliasing than the Radeon R9 270, and able to handle higher screen resolutions more effectively. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
Radeon R9 270		28800 Mpixels/sec
	Difference: 41600 (144%)

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 (counted in MB per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.