Radeon R9 270 vs Radeon RX 6600 XT

Intro

Compare those specifications to the Radeon RX 6600 XT, which features a core clock speed of 1968 MHz and a GDDR6 memory frequency of 2000 MHz. It also uses a 128-bit memory bus, and uses a 7 nm design. It is comprised of 2048 SPUs, 128 TAUs, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270		150 Watts
Radeon RX 6600 XT		160 Watts
	Difference: 10 Watts (7%)

Memory Bandwidth

The Radeon RX 6600 XT should in theory be quite a bit faster than the Radeon R9 270 overall. (explain)

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

Texel Rate

The Radeon RX 6600 XT is quite a bit (more or less 250%) better at texture filtering than the Radeon R9 270. (explain)

Radeon RX 6600 XT		251904 Mtexels/sec
Radeon R9 270		72000 Mtexels/sec
	Difference: 179904 (250%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 6600 XT is the winner, and very much so. (explain)

Radeon RX 6600 XT		125952 Mpixels/sec
Radeon R9 270		28800 Mpixels/sec
	Difference: 97152 (337%)

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 maximum amount of information (counted in megabytes per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better 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 in one second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.