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Random/LFSR on P2



  • You have B350 vs the A320 mentioned, correct?
    Now I'm confused about 5000 CPU support, as the A320 notice is recent, so wouldn't B350 have been first?
    Not sure about TPM 2.0, so hope it is present.
    Motherboards without support will require a TPM add-in card for W11... unless you disable the TPM requirement, which I have seen discussed.

  • evanhevanh Posts: 13,629
    edited 2021-11-15 23:59

    Two things:
    1: I don't think there is any B350 motherboards yet supporting the Ryzen 5000 series CPUs. Only A320 motherboards so far.

    2: However, I also found there is a recent updated BIOS for my B350 board when I looked on the website. But of course that's primarily just a defaults change so as to smooth the installation of Win11 by enabling TPM by default.

    Then, what I discovered about TPM support is it seems to be fully functional - which I hadn't expected to find given the TPM slot in the motherboard is unpopulated. My conclusion is the required hardware is present in the Ryzen 1700X - has been there all along.

    But, finally, the updated BIOS clearly contains more than just a default setting flipped. The menus haven't changed between the two BIOS versions but the compressed size has.

  • evanhevanh Posts: 13,629

    PS: Speculation online, for why only the A320 is getting this support, seems to be that the cheapest end of the market aren't likely to upgrade the whole kit to move from Zen/Zen+ to Zen3. Therefore the reasoning goes that AMD, and the board makers, are strategically providing this to get more CPUs, and RAM, sold without cutting into the newer motherboard sales.

  • Happy New Year!

  • evanhevanh Posts: 13,629

    Yep, Happy New Year to all. 13:00 here already. :)

  • xoroshironotxoroshironot Posts: 304
    edited 2022-01-06 22:54

    More 5000 on 300 series support banter: Here

  • evanhevanh Posts: 13,629


    The argument about a board's power capacity limit seems a little bogus to me. I can understand AMD having not verified all combinations of CPU and chipset on the simple basis of not bothering ... but to generally lump X370 and B350 boards as whimper than A320 boards does seem just a tad on the nose.

  • evanhevanh Posts: 13,629

    Pondering IC supplies ... My Geforce 960 is getting long in the tooth and I have been getting more interested in trying out a Radeon GPU on Linux. But haven't acted yet. I was eyeing up the 5600XT when they vanished due to covid19 supply shortages, then the 5700XT soon followed. I wasn't much interested in the 5500XT but sure enough even it went out of stock. The 6000 series is just too expensive and at any rate the 6500XT is only 4-channel PCIe, which is a problem when my mobo is limited to PCIe 3.0.

    None of the 5000 series has reappeared since. As if production was stopped completely ... or at least not worth continuing at the old prices.

    Lately, I've drawn up a PCB design with stepper motor ICs on board. Getting there wasn't as smooth sailing as usual ... The reference part I started with didn't have current limiting feature so I went a looking for something better ... every part I looked up was out of stock and not to be restocked for over a year. I knew that meant covid19 supply shortages and that even a year was a wild guess on their part.

    What I ended up with, to get current limiting feature built in, is a part that also required a minimum of 20 volts supply. An awkwardly high minimum. Which told me it was a part that couldn't easily be exchanged into an existing board design ... therefore it hadn't been snatched up in the frenzy to ensure on-going parts supply.

    Conclusion: The only ICs not out of stock are either a pricey narrow selection, or old stock that had virtually no turn-over.

    It's a little surprising to me just how wide the IC shortages are. There doesn't seem to be anything unaffected. The early excuse about the auto-industry not up-dating is looking more and more bogus. A deflection from something else.

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