Radeon R9 M385X vs Radeon RX 6600 XT

Intro

Compare all that to the Radeon RX 6600 XT, which has GPU clock speed of 1968 MHz, and 8192 MB of GDDR6 memory running at 2000 MHz through a 128-bit bus. It also is comprised of 2048 Stream Processors, 128 TAUs, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon RX 6600 XT will be 173% faster than the Radeon R9 M385X in general, because of its greater bandwidth. (explain)

Radeon RX 6600 XT		262144 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 166144 (173%)

Texel Rate

The Radeon RX 6600 XT will be quite a bit (more or less 309%) faster with regards to anisotropic filtering than the Radeon R9 M385X. (explain)

Radeon RX 6600 XT		251904 Mtexels/sec
Radeon R9 M385X		61600 Mtexels/sec
	Difference: 190304 (309%)

Pixel Rate

The Radeon RX 6600 XT should be a lot (about 616%) faster with regards to anti-aliasing than the Radeon R9 M385X, and able to handle higher screen resolutions without losing too much performance. (explain)

Radeon RX 6600 XT		125952 Mpixels/sec
Radeon R9 M385X		17600 Mpixels/sec
	Difference: 108352 (616%)

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 (measured in megabytes per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the 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 most pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core speed of the card. 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 many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.