Radeon R9 390 8G vs Radeon RX 6700 XT

Intro

Compare those specifications to the Radeon RX 6700 XT, which comes with core speeds of 2321 MHz on the GPU, and 2000 MHz on the (Unknown) MB of GDDR6 memory. It features 2560 SPUs as well as 160 TAUs and 64 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6700 XT		230 Watts
Radeon R9 390 8G		275 Watts
	Difference: 45 Watts (20%)

Memory Bandwidth

In theory, the Radeon RX 6700 XT should perform a little bit faster than the Radeon R9 390 8G in general. (explain)

Radeon RX 6700 XT		393216 MB/sec
Radeon R9 390 8G		384000 MB/sec
	Difference: 9216 (2%)

Texel Rate

The Radeon RX 6700 XT should be much (more or less 132%) more effective at AF than the Radeon R9 390 8G. (explain)

Radeon RX 6700 XT		371360 Mtexels/sec
Radeon R9 390 8G		160000 Mtexels/sec
	Difference: 211360 (132%)

Pixel Rate

The Radeon RX 6700 XT should be much (more or less 132%) more effective at FSAA than the Radeon R9 390 8G, and also will be capable of handling higher resolutions better. (explain)

Radeon RX 6700 XT		148544 Mpixels/sec
Radeon R9 390 8G		64000 Mpixels/sec
	Difference: 84544 (132%)

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 data (counted in MB per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 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, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units 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 lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.