GeForce RTX 3080 12 GB vs Radeon R9 M395X

Intro

Compare all that to the Radeon R9 M395X, which has core clock speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 225 Watts (180%)

Memory Bandwidth

The GeForce RTX 3080 12 GB, in theory, should be a lot faster than the Radeon R9 M395X overall. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 774298 (484%)

Texel Rate

The GeForce RTX 3080 12 GB is much (more or less 281%) more effective at texture filtering than the Radeon R9 M395X. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Radeon R9 M395X		92544 Mtexels/sec
	Difference: 260256 (281%)

Pixel Rate

If using a high resolution is important to you, then the GeForce RTX 3080 12 GB is superior to the Radeon R9 M395X, by a large margin. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 117984 (510%)

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 information (counted in megabytes per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at 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 card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines 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 fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.