Radeon R9 270X vs Radeon RX 6600

Intro

Compare that to the Radeon RX 6600, which comes with GPU core speed of 1626 MHz, and 8192 MB of GDDR6 memory running at 1750 MHz through a 128-bit bus. It also features 1792 Stream Processors, 112 TAUs, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600		132 Watts
Radeon R9 270X		180 Watts
	Difference: 48 Watts (36%)

Memory Bandwidth

As far as performance goes, the Radeon RX 6600 should theoretically be quite a bit superior to the Radeon R9 270X overall. (explain)

Radeon RX 6600		229376 MB/sec
Radeon R9 270X		179200 MB/sec
	Difference: 50176 (28%)

Texel Rate

The Radeon RX 6600 will be much (about 128%) faster with regards to texture filtering than the Radeon R9 270X. (explain)

Radeon RX 6600		182112 Mtexels/sec
Radeon R9 270X		80000 Mtexels/sec
	Difference: 102112 (128%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 6600 is a better choice, by a large margin. (explain)

Radeon RX 6600		104064 Mpixels/sec
Radeon R9 270X		32000 Mpixels/sec
	Difference: 72064 (225%)

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 megabytes per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.