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Radeon R9 M390X vs Radeon RX 6500 XT

Intro

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

Compare those specifications to the Radeon RX 6500 XT, which comes with clock speeds of 2200 MHz on the GPU, and 2250 MHz on the 4096 MB of GDDR6 RAM. It features 1024 SPUs along with 64 Texture Address Units and 32 Rasterization Operator Units.

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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

Performance-wise, the Radeon R9 M390X should in theory be a small bit better 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 (about 52%) faster with regards to 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 will be a lot (approximately 204%) faster with regards to full screen anti-aliasing than the Radeon R9 M390X, and will be able to handle higher screen resolutions better. (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 data (measured in MB per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, the result should 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 anti-aliasing, HDR and higher screen resolutions.

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

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

Display Prices

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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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