Radeon R9 M385X vs Radeon RX 6800 XT

Intro

Compare 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 frequency of 2000 MHz on this particular model. It features 4608 SPUs as well as 288 TAUs and 128 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon RX 6800 XT, in theory, should perform much faster than the Radeon R9 M385X in general. (explain)

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

Texel Rate

The Radeon RX 6800 XT should be much (approximately 753%) faster with regards to 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

The Radeon RX 6800 XT will be a lot (about 1227%) faster with regards to full screen anti-aliasing than the Radeon R9 M385X, and also should be able to handle higher screen resolutions without slowing down too much. (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: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the video 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 maximum number of pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.