Question Zen 5 Turin builders thread.

[Markfw]

You don't *have* to populate the second socket of a 2P board. Nor do you have to put it into a case.

(Still, waiting for stock of 1P boards with the necessary BIOS compatibility might make more sense. Compatibility to your ES, that is.)

Yes, I thought about not populating the 2nd socket, but for $1750 That wasted space will be too tempting. as far as not putting it in a case. This house is too full of computers, no space to do that, literally. And, I have had so much luck with supermicro and my ES Genoas, I do love using them.

 

[igor_kavinski]

This house is too full of computers, no space to do that, literally.

Put an existing large server on its side. Put the new mobo on top of its case cover. Cover it up with some appropriate cardboard box with holes poked into it for ventilation. Not recommended if you have kids or pets running around and making contact with the server cases.

 

[Markfw]

Hard to explain but that's not possible

 

[StefanR5R]

Some of my computers don't have a case. I placed them into a shelf, which is quite space efficient. The shelf is set apart from the wall such that air flow isn't restricted. The shelf itself and vertical dividers in it are guiding airflow actually. The only animals which can reach these computers are insects and arachnids, and that's manageable.

 

[Markfw]

And where do you suggest a flat open space to put this ? and where to get the power from ? They are all over the house to spread out the power to different outlets.

 

[StefanR5R]

As I said, I do have a shelf for computers. Most of my computers sit in this shelf — several of those which do have a case, and all of those which don't have a case. There is also power distribution and monitoring, ethernet switch, and a KVM switch placed in this shelf. It's about as space efficient as 19" racks but probably cheaper and doesn't limit me to 4U coolers for CPUs and GPUs.

But here is the big caveat: The shelf is located where I can power it from two 230V 16A circuits. Or even from three of such circuits if I put a cable from the next room. That's how I can have rather many computers in a single room, and thus it's worthwhile to cram them into a rack or shelf. (And the rack or shelf makes computer cases superfluous.)

 

[Markfw]

As I said, I do have a shelf for computers. Most of my computers sit in this shelf — several of those which do have a case, and all of those which don't have a case. There is also power distribution and monitoring, ethernet switch, and a KVM switch placed in this shelf. It's about as space efficient as 19" racks but probably cheaper and doesn't limit me to 4U coolers for CPUs and GPUs.

But here is the big caveat: The shelf is located where I can power it from two 230V 16A circuits. Or even from three of such circuits if I put a cable from the next room.

whelf space ? one room filled to the ceiling with stuff, the other 4000 dvd's living room has a piano on one wall and the other behind the dining room table. Kitchen with the usual cabinets. my room above the bed or TV or a few pictures. NO ROOM.

 

[In2Photos]

And where do you suggest a flat open space to put this ? and where to get the power from ? They are all over the house to spread out the power to different outlets.

I suggest an intervention! No more buying stuff until you make room for it!

 

[Markfw]

I suggest an intervention! No more buying stuff until you make room for it!

It will replace a 5950x system.

 

[igor_kavinski]

^^^ You can stack these on top of each other by placing wood sheets of appropriate size between them as separators: https://www.amazon.ae/Unfinished-Basswood-Architectural-Building-150X100X2mm/dp/B0BPXLH8MT/

I think you could stack up to 5 systems like that.

 

[Markfw]

They usually are I was working on them for prep, 2 of these I am giving away to chur/family. If you look they are stacked even 3 high in the room with all the beds. Thats where the non-active boxes are that are actually 1/2 cases and half boxes. Like a 1700x from 2017, a 1950x, etc...

 

[Markfw]

More on-topic, I asked for a quote several times from Gigabyte on

MZ33-AR1​

Rev. 3.x

Here: https://www.gigabyte.com/Enterprise/Server-Motherboard/MZ33-AR1-rev-3x

2-3 times now, and no response. The talk about quantity and company I am with. I said retired to both, and I think they only want to sell to someone with a company ?? Being a single socket, it should be way more affordable to me. ~$1000 ? But no response.

NOBODY else has a single socket (or dual) other than supermicro and gigabyte that I can find ! ebay or otherwise. That is standard, not proprietary.

 

[SamMaster]

I'm not much into servers, but out of curiosity, I did find this : https://www.asrockrack.com/general/productdetail.asp?Model=GENOAD8UD-2T/X550#Specifications
here : https://www.neweggbusiness.com/product/product.aspx?item=9b-13-140-098&tpk=9b-13-140-098

If that is something you want.

 

[Markfw]

I want 12 channels, but I would take 8.

Problen is the little note that says a BIOS update is required for 9005, but belog available bios says NOTHING about a version to support Turin, and the latest bios was before Turin was launched by a lot (2023)

https://www.asrockrack.com/general/productdetail.asp?Model=GENOAD8UD-2T/X550#Download

 

[SamMaster]

It looks like the Turin firmware is in a beta BIOS for that board, so maybe not for you, especially if your CPU exceeds 400W.

 

[Markfw]

Why could I not find that ?? Maybe I will try it. I can always use another Turin when the other is available.

I can't click on anything above and I can't find it online. If you can link that page it would be great !

Edit: duh... There is a link for "beta zone", thats it

 

[StefanR5R]

I still have some additional follow-up tests in the works to look at the EPYC 9005 power/performance determinism, power profiles, looking at the Genoa to Turin upgrade story for a Supermicro 1P retail motherboard, and more.

(https://www.phoronix.com/review/amd-epyc-9655/7)
This follow-up will be interesting to read, as Supermicro H13SSL-N/-NT are (sadly: still by far) the most interesting DIY SP5 boards.

 

[Soulkeeper]

Anyone know if we will see CUDIMM technology in the server dimm space ?

 

[Markfw]

Anyone know if we will see CUDIMM technology in the server dimm space ?

this in a builder's thread ? Please only reply if you are BUILDING a Turin system.

 

[Markfw]

OK, update on the building. I have another CPU the same as post number 7 on the way. These 2 will be going in the following motherboard that is purchased and due to be shipped at any moment. So I will have a dual 64 core Turin system by the end of the month ! But only 6 memory channels per CPU populated at this time.

Gigabyte MZ73-LM0 (rev. 3.0) AMD EPYC 9005/9004 Support 9654/9754/9965/9845 | eBay

AMD EPYC™ 9005 Series Processors. AMD EPYC™ 9004 Series Processors. AMD EPYC™ 9005 AMD EPYC™ 9004 · Remote BIOS/BMC/CPLD Update. - Support NCSI function. · LDAP / AD / RADIUS Support. · Sensor Reading History Data.

www.ebay.com

 

[Soulkeeper]

Why is this in a builder's thread ? Please only reply if you are BUILDING a Turin system.

Because I'm wondering specifically about turin. The choice seems to be only registered dimms.
I too was looking at that supermicro motherboard, but i'm thinking maybe now is not the time.
What are your thoughts on this ?

I don't mean to upset you, but you are the only one who has posted here who is building a Turin. That's a stiff requirement to join the conversation.

 

[Markfw]

Because I'm wondering specifically about turin. The choice seems to be only registered dimms.
I too was looking at that supermicro motherboard, but i'm thinking maybe now is not the time.
What are your thoughts on this ?

I don't mean to upset you, but you are the only one who has posted here who is building a Turin. That's a stiff requirement to join the conversation.

All server chips use rdimms. Xeon, Rome, Naples, Milan and now Turin. Why is that so hard to understand. ALL servers use rdimms. Now Turin uses 6000 speed, much faster than before. Now cudimm is a new technology. No idea who may adopt it first.

Now lets get back to building stuff.

 

[Soulkeeper]

Not all server chips use only rdimms, but I'll leave you to your personal build blog.

You want me to delete my posts too ?

 

[Markfw]

Not all server chips use only rdimms, but I'll leave you to your personal build blog.

You want me to delete my posts too ?

No. Once you explained it, its good input But I am hoping this remains a builders thread. BTW, I would have put this in the Turin/Zen 5 thread.

 

[StefanR5R]

Anyone know if we will see CUDIMM technology in the server dimm space ?

CU-DIMMs are buffering the clock signal, but not the command, address, and data signals. (Because that would add latency, and BOM cost obviosuly.)

On the R-DIMMs used in server space, clock, command, and address signals are buffered. LR-DIMMs buffer the data signals in addition. FB-DIMMs do so too but have a different bus with fewer pins per module. That is, R-, LR-, and FB-DIMMs' features are a superset of CU-DIMMs'.

The motive for clock buffering on CU-DIMMs is to achieve higher data bus speeds, at same latencies and capacities. The motive for the more extensive buffering on R-DIMMs is to allow for larger memory capacity per module and for more memory slots per processor socket, while maintaining quite high data rates but sacrificing a little WRT latency. (LR-DIMMs and FB-DIMMs exist for even larger memory capacity than R-DIMMs.)

In other words:
CU-DIMM is a cherry-picked feature from R-DIMMs. You won't ever see CU-DIMMs in regular servers due to their constraints with respect to channel count and memory capacity whuch U-DIMMs and CU-DIMMs have in common. Small-socket servers (Intel Xeon-E, but not EPYC 4004 and 4005) which are limited to U-DIMMs presently could technically adopt this technology. But will that happen? I don't know. ECC CU-DIMMs would be a niche within a niche.

Edit:
Socket SP5, and thus Turin, supports R- and LR-DIMMs only. I don't know if it is technically possible to make an SP5 board with only about 4 DIMM slots in order to use unregistered DIMMs. If so, nobody is going to make such a board. And even so, the IMCs in the Turin I/O die wouldn't support the high data rates which CU-DIMMs enable anyway.

Edit 2:
EPYC 4004 (and if it is brought to market, EPYC 4005) in socket AM5 is not going to adopt CU-DIMM technology either, because the client I/O die in them does not support such speeds either. AMD is not going to make a new I/O die in the Zen 5 generation anymore (except for the Strix Halo mobile CPU). And even if AMD changed the IMCs in the I/O die to support higher data rates, they also would likely have to change the IFOP and the CCDs too for higher data rates on their side. Technically, they could change the client I/O die to support "wide GMI" with existing CCDs. But I am sure they won't bother anymore, before first Strix Halo and then Zen 6 move to different packaging technology.