GeForce RTX 3080 12 GB vs Radeon R9 M265X

Intro

Compare those specifications to the Radeon R9 M265X, which comes with GPU core speed of 575 MHz, and 2048 MB of GDDR5 RAM set to run at 1125 MHz through a 128-bit bus. It also is comprised of 640 Stream Processors, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce RTX 3080 12 GB is 1198% faster than the Radeon R9 M265X overall, due to its higher bandwidth. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Radeon R9 M265X		72000 MB/sec
	Difference: 862298 (1198%)

Texel Rate

The GeForce RTX 3080 12 GB will be much (approximately 1434%) more effective at texture filtering than the Radeon R9 M265X. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 329800 (1434%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce RTX 3080 12 GB is superior to the Radeon R9 M265X, by far. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon R9 M265X		9200 Mpixels/sec
	Difference: 131920 (1434%)

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 (in units of megabytes per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If 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, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.