Question Zen 5 Turin builders thread.

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Soulkeeper

Diamond Member
Nov 23, 2001
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Thanks to both of you.
I was under the impression that R-DIMMs did not buffer the clock. Most documentation only seems to mentions command/address.
I'm kinda excited about ddr5, cudimms, and other memory tech.
Turin having 12 channels is just amazing.
Maybe i'll open a thread in the memory forum section to not derail this thread.
 
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Markfw

Moderator Emeritus, Elite Member
May 16, 2002
26,389
15,513
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Thanks to both of you.
I was under the impression that R-DIMMs did not buffer the clock. Most documentation only seems to mentions command/address.
I'm kinda excited about ddr5, cudimms, and other memory tech.
Turin having 12 channels is just amazing.
Maybe i'll open a thread in the memory forum section to not derail this thread.
What you should do is monitor this thread as my hardware comes in, and I compare it to Genoa (which ALSO has 12 channel memory) and I benchmark certain things (like avx-512) It is supposed to be up to 40% faster than Genoa !
 
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StefanR5R

Elite Member
Dec 10, 2016
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I was under the impression that R-DIMMs did not buffer the clock. Most documentation only seems to mentions command/address.
"Buffering" may not be the right term for what is done with the clock signal. "Repeating" and thereby "boosting" maybe? Anyway, the RCDs on DDR5 (and DDR4 and DDR3) R-/LR-DIMMs have clock input and output pins, and that's obviously where the "C" in "RCD" is coming from. :-) And functionally, it makes sense to have a PLL located directly on such highclocking register devices, so I doubt that any manufacturer makes do without it.

Back on topic, as you may have read, Turin is spec'ed to support DDR5-6000 in general and DDR5-6400 in select configurations (CPU and board combos?). But due to the slow news on Turin-ready boards, I as a member of the unwashed masses have no idea which specific configs those latter are, and if any of them will target the retail market in the first place. Might be for special contracts only, for all we know.
 

Markfw

Moderator Emeritus, Elite Member
May 16, 2002
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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.)
Well, I could not resist. So case, 2P motherboard and 2 64 core Turins getting built ! Its all here !
 
Last edited:

Markfw

Moderator Emeritus, Elite Member
May 16, 2002
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Well, that's the board I had ordered. They could not give me an ETA, and the word back from supermicro directly said the same. So I cancelled the order and get the gigabyte dual that was guaranteed to be compatible. I just emailed wiredzone. we will see.

Oh and the gigabyte motherboard will not even post, but I had 6400 memory which is supposed to be compatible. So I ordered 4800. We will see.
 

Markfw

Moderator Emeritus, Elite Member
May 16, 2002
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Well, not sure that the the problem, but the gigabyte 2p motherboard will not even post, not even with one cpu. Its going back.
 

Markfw

Moderator Emeritus, Elite Member
May 16, 2002
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Is there any warranty on the CPU? How can one be sure that the CPU isn't the issue?
Both ? that have been tested in a corporate environment ? I doubt that > Most likely does not like ES chips. Will soon see. a supermicro motherboard is coming Sunday. All my Genoa work on supermicro motherboards.
 
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Markfw

Moderator Emeritus, Elite Member
May 16, 2002
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Potential mainboad problems:
– Turin readiness
– acceptance of ESs
– vendor lock imprinted into the ES by the previous board
Yes to one and 2. But in ebay, said number one was fixed, and did NOT say number 2 was a problem. NUmber 3, pretty sure all ES can't be imprinted with a lock. Anyway a single socket board from supermicro that is guaranteed by supermicro to do number one is coming Sunday, so we shall see. I will update then.
 
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