Radeon R9 M390X vs Radeon RX 6950 XT

Intro

Compare those specs to the Radeon RX 6950 XT, which has GPU clock speed of 1925 MHz, and 16384 MB of GDDR6 RAM set to run at 2250 MHz through a 256-bit bus. It also features 5120 Stream Processors, 320 Texture Address Units, and 128 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M390X		125 Watts
Radeon RX 6950 XT		335 Watts
	Difference: 210 Watts (168%)

Memory Bandwidth

Theoretically, the Radeon RX 6950 XT should be much faster than the Radeon R9 M390X overall. (explain)

Radeon RX 6950 XT		589824 MB/sec
Radeon R9 M390X		160000 MB/sec
	Difference: 429824 (269%)

Texel Rate

The Radeon RX 6950 XT should be quite a bit (about 566%) faster with regards to anisotropic filtering than the Radeon R9 M390X. (explain)

Radeon RX 6950 XT		616000 Mtexels/sec
Radeon R9 M390X		92544 Mtexels/sec
	Difference: 523456 (566%)

Pixel Rate

The Radeon RX 6950 XT should be quite a bit (about 965%) more effective at anti-aliasing than the Radeon R9 M390X, and will be able to handle higher screen resolutions while still performing well. (explain)

Radeon RX 6950 XT		246400 Mpixels/sec
Radeon R9 M390X		23136 Mpixels/sec
	Difference: 223264 (965%)

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 maximum amount of data (counted in 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 speed. In the case of DDR type RAM, the result 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 high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.