Radeon R9 380 2G vs Radeon RX 6800

Intro

Compare those specs to the Radeon RX 6800, which features a clock frequency of 1700 MHz and a GDDR6 memory frequency of 2000 MHz. It also makes use of a 256-bit memory bus, and makes use of a 7 nm design. It is made up of 3840 SPUs, 240 Texture Address Units, and 96 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380 2G		190 Watts
Radeon RX 6800		250 Watts
	Difference: 60 Watts (32%)

Memory Bandwidth

In theory, the Radeon RX 6800 should be 187% quicker than the Radeon R9 380 2G overall, due to its higher data rate. (explain)

Radeon RX 6800		524288 MB/sec
Radeon R9 380 2G		182400 MB/sec
	Difference: 341888 (187%)

Texel Rate

The Radeon RX 6800 is quite a bit (approximately 276%) faster with regards to AF than the Radeon R9 380 2G. (explain)

Radeon RX 6800		408000 Mtexels/sec
Radeon R9 380 2G		108640 Mtexels/sec
	Difference: 299360 (276%)

Pixel Rate

The Radeon RX 6800 will be a lot (more or less 426%) more effective at full screen anti-aliasing than the Radeon R9 380 2G, and will be able to handle higher resolutions more effectively. (explain)

Radeon RX 6800		163200 Mpixels/sec
Radeon R9 380 2G		31040 Mpixels/sec
	Difference: 132160 (426%)

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 (measured in megabytes per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs 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 output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.