Radeon R9 M385X vs Radeon RX 6800 XT

Intro

Compare all of that to the Radeon RX 6800 XT, which uses a 7 nm design. AMD has clocked the core frequency at 1825 MHz. The GDDR6 RAM is set to run at a speed of 2000 MHz on this particular model. It features 4608 SPUs along with 288 TAUs and 128 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon RX 6800 XT should in theory perform quite a bit faster than the Radeon R9 M385X overall. (explain)

Radeon RX 6800 XT		524288 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 428288 (446%)

Texel Rate

The Radeon RX 6800 XT is quite a bit (approximately 753%) more effective at anisotropic filtering than the Radeon R9 M385X. (explain)

Radeon RX 6800 XT		525600 Mtexels/sec
Radeon R9 M385X		61600 Mtexels/sec
	Difference: 464000 (753%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 6800 XT is superior to the Radeon R9 M385X, and very much so. (explain)

Radeon RX 6800 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: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster 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 number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write 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 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 rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.