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Radeon R9 M390X vs Radeon RX 6500 XT

Intro

The Radeon R9 M390X has a core clock speed of 723 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 256-bit bus, and makes use of a 28 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 32 ROPs.

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

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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

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Radeon R9 M390X

Amazon.com

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Radeon RX 6500 XT

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon R9 M390X Radeon RX 6500 XT
Manufacturer AMD AMD
Year 2015 January 2022
Code Name Tonga Navi 24 XT
Memory 4096 MB 4096 MB
Core Speed 723 MHz 2200 MHz
Memory Speed 5000 MHz 4500 GB/s
Power (Max TDP) 125 watts 107 watts
Bandwidth 160000 MB/sec 147456 MB/sec
Texel Rate 92544 Mtexels/sec 140800 Mtexels/sec
Pixel Rate 23136 Mpixels/sec 70400 Mpixels/sec
Unified Shaders 2048 1024
Texture Mapping Units 128 64
Render Output Units 32 32
Bus Type GDDR5 GDDR6
Bus Width 256-bit 64-bit
Fab Process 28 nm 6 nm
Transistors (Unknown) million 5400 million
Bus PCIe 3.0 x16 PCIe 4.0 x16
DirectX Version DirectX 12 DirectX 12
OpenGL Version OpenGL 4.3 OpenGL 4.6

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.

Display Prices

Hide Prices

Radeon R9 M390X

Amazon.com

Check prices at:

Radeon RX 6500 XT

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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