Radeon R9 M390X vs Radeon RX 6500 XT

Intro

Compare all that to the Radeon RX 6500 XT, which uses a 6 nm design. AMD has clocked the core frequency at 2200 MHz. The GDDR6 memory works at a speed of 2250 MHz on this specific card. It features 1024 SPUs as well as 64 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
Radeon R9 M390X		125 Watts
	Difference: 18 Watts (17%)

Memory Bandwidth

The Radeon R9 M390X should in theory be a bit faster than the Radeon RX 6500 XT overall. (explain)

Radeon R9 M390X		160000 MB/sec
Radeon RX 6500 XT		147456 MB/sec
	Difference: 12544 (9%)

Texel Rate

The Radeon RX 6500 XT will be much (more or less 52%) more effective at anisotropic filtering than the Radeon R9 M390X. (explain)

Radeon RX 6500 XT		140800 Mtexels/sec
Radeon R9 M390X		92544 Mtexels/sec
	Difference: 48256 (52%)

Pixel Rate

The Radeon RX 6500 XT should be quite a bit (approximately 204%) faster with regards to AA than the Radeon R9 M390X, and also able to handle higher resolutions while still performing well. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
Radeon R9 M390X		23136 Mpixels/sec
	Difference: 47264 (204%)

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 MB per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 are applied in one second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling 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 the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.