GeForce RTX 3080 12 GB vs Radeon R9 M385X

Intro

Compare that to the Radeon R9 M385X, which uses a 28 nm design. AMD has clocked the core speed at 1100 MHz. The GDDR5 RAM is set to run at a frequency of 1500 MHz on this particular model. It features 896 SPUs along with 56 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce RTX 3080 12 GB should in theory perform much faster than the Radeon R9 M385X in general. (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 should be much (more or less 702%) more effective at anti-aliasing than the Radeon R9 M385X, and able to handle higher screen resolutions better. (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: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.