Radeon R9 270X vs Radeon RX 6600 XT

Intro

Compare those specs to the Radeon RX 6600 XT, which features GPU clock speed of 1968 MHz, and 8192 MB of GDDR6 memory set to run at 2000 MHz through a 128-bit bus. It also is made up of 2048 SPUs, 128 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 6600 XT		160 Watts
Radeon R9 270X		180 Watts
	Difference: 20 Watts (13%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6600 XT will be 46% quicker than the Radeon R9 270X overall, due to its higher bandwidth. (explain)

Radeon RX 6600 XT		262144 MB/sec
Radeon R9 270X		179200 MB/sec
	Difference: 82944 (46%)

Texel Rate

The Radeon RX 6600 XT should be much (more or less 215%) more effective at AF than the Radeon R9 270X. (explain)

Radeon RX 6600 XT		251904 Mtexels/sec
Radeon R9 270X		80000 Mtexels/sec
	Difference: 171904 (215%)

Pixel Rate

The Radeon RX 6600 XT should be quite a bit (approximately 294%) better at FSAA than the Radeon R9 270X, and will be able to handle higher screen resolutions more effectively. (explain)

Radeon RX 6600 XT		125952 Mpixels/sec
Radeon R9 270X		32000 Mpixels/sec
	Difference: 93952 (294%)

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 information (in units of megabytes per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it must 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling 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 that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of 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 rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.