Radeon R9 M395X vs Radeon RX 6600 XT

Intro

Compare those specifications to the Radeon RX 6600 XT, which comes with 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 comprised of 2048 Stream Processors, 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 R9 M395X		125 Watts
Radeon RX 6600 XT		160 Watts
	Difference: 35 Watts (28%)

Memory Bandwidth

In theory, the Radeon RX 6600 XT is 64% quicker than the Radeon R9 M395X in general, because of its greater bandwidth. (explain)

Radeon RX 6600 XT		262144 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 102144 (64%)

Texel Rate

The Radeon RX 6600 XT will be much (more or less 172%) better at AF than the Radeon R9 M395X. (explain)

Radeon RX 6600 XT		251904 Mtexels/sec
Radeon R9 M395X		92544 Mtexels/sec
	Difference: 159360 (172%)

Pixel Rate

The Radeon RX 6600 XT should be a lot (more or less 444%) better at FSAA than the Radeon R9 M395X, and also capable of handling higher resolutions while still performing well. (explain)

Radeon RX 6600 XT		125952 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 102816 (444%)

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 data (counted in MB per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 number of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, 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 amount of pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.