Radeon R9 M390X vs Radeon RX 6950 XT

Intro

Compare those specifications to the Radeon RX 6950 XT, which has a clock frequency of 1925 MHz and a GDDR6 memory frequency of 2250 MHz. It also uses a 256-bit memory bus, and makes use of a 7 nm design. It is comprised of 5120 SPUs, 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

The Radeon RX 6950 XT should in theory perform a lot 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 (more or less 566%) more effective at texture 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

If using a high resolution is important to you, then the Radeon RX 6950 XT is superior to the Radeon R9 M390X, by a large margin. (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: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.