And it is very likely that E0, E2 and E3 has some problems that were not mitigated by microcode. Unfortunately intel doesn’t share what was changed between steppings.
ES Xeon Discussion
- Thread starter britinpdx
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Yeah. I just wanted to say that Intel had E3 as QS and that needed to had extra silicon revision - so there was something in E3 that was caught only at QS stage. It could be something minor or easily workaroundable, but we unfortunately don't know what it was.
P.S. But for my use tests E0 was surprisingly good and worked really well until I replaced it with EMR ES.
Hi, this is an amazing thread, thank you for all the info. Could someone confirm whether a W790 board + QYFS (ASUS W790-Ace in this case) will boot with only one RDIMM installed? I only have one stick right now and want to make sure that the CPU and motherboard that I have coming will at least be able to boot lol. Thanks!
Yeah I saw that too, I just wasn't sure if there was any ES weirdness I could expect. Thanks!
it works in other X1 slots too, e.g. if A1 channel of CPU is broken.
but keep in mind only one RDIMM is like a 16 core desktop CPU with 1x DDR5 UDIMM 2400Mt
edit: W790 Ace is optimal for Xeon W? 24xx/25xx series, CPU & Mobo only quad-channel memory.
Can the official version of W790 also use QYFS or QYFR? I haven't used it myself, but I've only heard that it can be lit up with ES motherboard.
what do you mean with official version ?
ASUS W790 SAGE & Ace work, ASRock WS W790 work,
supermicro W790 not (X13SRA only with BIOS mod)
Dell 5860 not...
QYFS or QYFR works in any gibabyte C741 motherboard with latest BIOS.
edit: this is not the usual case/the norm of course.
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I also have a question: Does the ASUS W790 motherboard have a BIOS lock? I saw on other blogs that they used the ASUS W790 ES motherboard version 1.01 and were able to power on the ES 8480 and overclock. Can the retail version of the ASUS W790 do the same?
Qxxx is called QDF, prod.unit Retail SRxxx is called S-SPEC
QDF does not hint to any stage of ES, can be ES0 or QS.
this stepping E2 has still no Brand string ("0000" instead) - we can't guess about a target SKU at that stage.
it is not unusual that ES have more feature enabled than later prod.units.
If it runs on a W790 motherboard the bad news is no W790 BIOS supports PMEM (why it should)
and no C741 motherboard support overclocking ( you have to mod. BIOS and try XTU )
stepping E2 of Xeon W9-3495X is Q19N
where did you got that from ?
Got It From My Friend
It was a crazy module which can run in all-core 3.9G with 56cores!
Optane PMEM 300 kills everyone!
sorry, i don't see that. max. package is 378Watts and normal for a 56 core but 56 cores @3900mhz will need over 500Watts.Got It From My Friend
It was a crazy module which can run in all-core 3.9G with 56cores!
it is indeed a special one, talks DMI3 and DMI4 like SPR-SP D0s, runs on W790 and C741 motherboards.
If I remember correctly, they change the memory controller, therefore that step4 and above 4th gen xeon support PMem 300 at C741. However, D0 support PMem 300 indeed, but must be in es C741 chipset.
---Ti_EgrDiv
I don't know if you request my services or not on Goolfish, but QYFS will only functioning with PMem 300 modules under es chipset. However, even PMem 300 series, it must follow 1:4, 1:8, 1:16 ratio. If you want to use memory mode in advance, the ratio between RDIMM and PMem must be 1:4 or 1:8.
---Ti_EgrDiv
Indeed ; )The most interesting part is that in the latest R12 BIOS (the latest BIOS I have tested), Gigabyte (MS03-Ce0) did not remove the support for PMEM
But only AD mode left in the BIOS configuration(s). I haven't try to use ipmctl to configure memory mode in the OS.