I would like to install this CPU on a msi B450 Tomahawk max. According to the msi compatibility list, it is suitable. But...the B450 has PCI 3.0, no PCI 4.0. Is the CPU slower because of that, or does it work? Thanks for info.

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Accepted Answer

PCIe is backwards compatible, so your graphics card or SSD that can run PCIe 4.0 will simply run on 3.0, otherwise you won't lose any CPU performance and as far as I know this is rarely a limiting factor.

Answer

I would rather get a better motherboard e.g. ASRock X570 Phantom Gaming 4 AMD X570 So.AM4 Dual Channel DDR4 ATX (156 € at
Mindfactory) You have 1x PCIe 4.0 x16, 1x PCIe 4.0 x16 (x4) for the better GraKa later :-)
Greetings Richie 
or eBay article no.:204250653853 from me.

Answer

You have to make sure that you have the latest bios version, then it is no problem. 
and as the colleague described above is already correct.

Your data. Your choice.

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Question about AMD Ryzen 7 5800X

I would like to install this CPU on a msi B450 Tomahawk max. According to the msi compatibility list, it is suitable. But...the B450 has PCI 3.0, no PCI 4.0. Is the CPU slower because of that, or does it work? Thanks for info.