back to article AMD is Ryzen to the SMB occasion with a bundle of baby Epycs

AMD on Tuesday revealed its latest chips to get a Zen 5 refresh with the launch of its itty bitty Epyc 4005-series CPUs. The House of Zen is betting on the parts it thinks will help it win over small-to-midsize businesses, branch offices, and dedicated hosting providers that don't necessarily need or want to pay for all the …

  1. Jou (Mxyzptlk) Silver badge

    The most important variant is missing...

    Where is the variant with 3D Cache on both chiplets? They skipped that for the 9950x3d, for "probably not enough market" reasons. And do the same for epyc.

    But I am not a big market enough alone, sadly... Where are the Zen5 Threadrippers? They are late! There I may find the 16 core with 192 MB cache (or more?)...

    1. RAMChYLD Bronze badge
      Boffin

      Re: The most important variant is missing...

      The 4484PX and 4584PX are the 3D cache offerings IIRC, being counterparts of the 9950X3D and 9900X3D respectively. However apparently there is no counterpart for the 9800X3D.

      1. Jou (Mxyzptlk) Silver badge

        Re: The most important variant is missing...

        Yeah, the 4585PX is like the 9950X3D: 3D Cache on ONE of the two chiplets. If it were on both I would have upgraded long ago.

  2. TrevorH

    I wonder why it maxes out at 192GB RAM when the desktop variety can use up to 256GB (if youcan find 64GB DIMMs). Perhaps there are no ECC 64GB DIMMs...

    1. Jou (Mxyzptlk) Silver badge

      The desktop variant can ECC, and there are such 64 GB ECC UDIMM. ECC is, for me, a selling point. I have ECC since Ryzen 2700x was released (and upgraded two times on that mainboard). Much easier when doing RAM overclocking: You get an event in your system log that you overdid RAM OC, but the machine keeps on going. Albeit much slower with my desktop CPU, but you can shut down normal.

    2. that one in the corner Silver badge

      Market fragmentation.

      You wouldn't want to trust your server to a "desktop" CPU, would you?

      So if you want more RAM in your server, pay for the Big Boy server CPU.

      1. RAMChYLD Bronze badge

        I think OP's issues with these Ryzen-based Epycs is that they support less RAM than their desktop counterparts. Desktop Ryzen 9s support up to 256GB, while these Epyc 4004s support only up to 192GB. Which is kinda baffling.

        1. that one in the corner Silver badge

          Yes - AMD are trying to create market fragmentation!

          By deliberately putting in more, arbitrary, limitations. Which, being arbitrary, are kinda baffling.

          So if you want the full RAM, in a server, you buy the 'real' EPYC and give AMD the extra money.

          Why wouldn't you buy the desktop part instead? Because the sale literature makes it clear that those are not 'server rated' or some such wording, whatever that means (no matter your Ryzen box at home runs 24/7/52 without any problems). Classic FUD.

          Unfortunately, my belief in this idea of any company, especially AMD, being brazen enough to try and get more money by cynically manipulating CPU specs has proven unpopular so far, but until there is a better explanation I'm gonna stick with it.

          1. Anonymous Coward
            Anonymous Coward

            The idea of different CPU dies being identical except for a cut circuit to limit the features isn't a new idea. I suspect it's more to do with the amount of support AMD are prepared to offer. Server CPUs are expected to be on 24/7 but desktop CPUs aren't.

            1. that one in the corner Silver badge

              Isn't that what I just said?

              Nobody's claiming creating fragmentation is a new idea (go back to IBM changing the position of a rubber band to increase the speed of your tabulator - for a price).

              Ditto the "server runs 24/7/52" - pay more and they'll give you the support. (Even though people have managed to use the Ryzen part 24/7/52 quite happily & they are going to be fine for you, that isn't 'supported'.).

  3. rcxb Silver badge

    Brand dilution

    AMD should have come up with some 3rd model name... falling in-between EPYC and Ryzen. This is just diluting the EPYC brand and bringing it down a notch. Data centers can SAY they've got EPYC CPUs, while they really have cheaper Ryzens. That doesn't help anybody.

    I don't really see the appeal. It's just a desktop chip with an EPYC label slapped on it. Maybe the supported motherboards for these chips will be more reliable and ALL have ECC support as mandatory, instead of a guessing-game on desktop mobo models? Other than that, a cheap cash-in on the EPYC name seems to tbe the only reason for it.

    1. Jou (Mxyzptlk) Silver badge

      Re: Brand dilution

      Article mention Built-in RAID, fully supported. In the end it will be as usual: The BIOS/UEFI has just enough RAID logic to make the OS boot with the driver, the RAID is in the driver. But then another typical server part comes in: Monitoring. Yes, can be done in another way too, but here being closer to the usual server monitoring things of the bigger manufacturers.

      And it is not like Intel doesn't do the same for its Xeons.

    2. Gordon 10 Silver badge
      FAIL

      Re: Brand dilution

      You arent the droid they are selling to.

      Enterprises rate reliablity far higher than benchmark scores. Benchmarks rarely drive enterprise sales - reliablity stats and warrantee's do. EPYC means lower failure rates and better post-sales support and thats all that matters.

      To misquote General Brady.

      Amateurs study spec sheets.

      Professionals study reliability & return stats.

      Or to put in software terms - if you arent prioritising your NFR's you're probably doing it wrong.

POST COMMENT House rules

Not a member of The Register? Create a new account here.

  • Enter your comment

  • Add an icon

Anonymous cowards cannot choose their icon

Other stories you might like