Radeon R9 M385X vs Radeon RX 6900 XT

Intro

Compare that to the Radeon RX 6900 XT, which comes with a core clock speed of 1825 MHz and a GDDR6 memory speed of 2000 MHz. It also makes use of a 256-bit memory bus, and makes use of a 7 nm design. It features 5120 SPUs, 320 TAUs, and 128 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon RX 6900 XT should be 446% quicker than the Radeon R9 M385X in general, due to its higher bandwidth. (explain)

Radeon RX 6900 XT		524288 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 428288 (446%)

Texel Rate

The Radeon RX 6900 XT will be much (about 848%) faster with regards to texture filtering than the Radeon R9 M385X. (explain)

Radeon RX 6900 XT		584000 Mtexels/sec
Radeon R9 M385X		61600 Mtexels/sec
	Difference: 522400 (848%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 6900 XT is superior to the Radeon R9 M385X, by far. (explain)

Radeon RX 6900 XT		233600 Mpixels/sec
Radeon R9 M385X		17600 Mpixels/sec
	Difference: 216000 (1227%)

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 largest amount of data (measured in MB per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.