Radeon R9 380X vs Radeon RX 6800 XT

Intro

Compare those specs to the Radeon RX 6800 XT, which comes with GPU core speed of 1825 MHz, and 16384 MB of GDDR6 memory running at 2000 MHz through a 256-bit bus. It also is made up of 4608 SPUs, 288 TAUs, and 128 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380X		190 Watts
Radeon RX 6800 XT		300 Watts
	Difference: 110 Watts (58%)

Memory Bandwidth

The Radeon RX 6800 XT should in theory perform much faster than the Radeon R9 380X overall. (explain)

Radeon RX 6800 XT		524288 MB/sec
Radeon R9 380X		182400 MB/sec
	Difference: 341888 (187%)

Texel Rate

The Radeon RX 6800 XT should be a lot (about 323%) faster with regards to AF than the Radeon R9 380X. (explain)

Radeon RX 6800 XT		525600 Mtexels/sec
Radeon R9 380X		124160 Mtexels/sec
	Difference: 401440 (323%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 6800 XT is a better choice, by far. (explain)

Radeon RX 6800 XT		233600 Mpixels/sec
Radeon R9 380X		31040 Mpixels/sec
	Difference: 202560 (653%)

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 max amount of information (measured in MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the 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 applied per second. This is worked out by multiplying the total number of texture units by the core clock 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 maximum amount of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount 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 quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.