GeForce RTX 3080 12 GB vs Radeon R9 M385X

Intro

Compare all that to the Radeon R9 M385X, which comes with a core clock frequency of 1100 MHz and a GDDR5 memory frequency of 1500 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 896 SPUs, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce RTX 3080 12 GB should theoretically be a lot superior to the Radeon R9 M385X overall. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 838298 (873%)

Texel Rate

The GeForce RTX 3080 12 GB is quite a bit (about 473%) more effective at texture filtering than the Radeon R9 M385X. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Radeon R9 M385X		61600 Mtexels/sec
	Difference: 291200 (473%)

Pixel Rate

The GeForce RTX 3080 12 GB will be quite a bit (about 702%) more effective at anti-aliasing than the Radeon R9 M385X, and also should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon R9 M385X		17600 Mpixels/sec
	Difference: 123520 (702%)

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 information (in units of megabytes per second) that can be transported over the external memory interface within a second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. 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 ability to get to the max fill rate.