Radeon R9 270X vs Radeon RX 6600 XT

Intro

Compare all that to the Radeon RX 6600 XT, which has core clock speeds of 1968 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR6 memory. It features 2048 SPUs as well as 128 TAUs and 64 ROPs.

Display Graphs

Hide Graphs

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

In theory, the Radeon RX 6600 XT will be 46% faster than the Radeon R9 270X in general, due to its greater 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 (about 215%) better 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

If running with lots of anti-aliasing is important to you, then the Radeon RX 6600 XT is superior to the Radeon R9 270X, by a large margin. (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: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred across 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 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock 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 of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.