ES Xeon Discussion

[NablaSquaredG]

I thought these don't work on almost any motherboards?

I use ASrock Rack EPC621D8A, Supermicro X11DPi-NT and Gigabyte MD71-HB0 and they work on all of them. X11DPi-NT required VRM mod.

 

[Cythisia]

Thanks, that was an awesome reply, very helpful! So B0 stepping is QS for 84xx? I did just pick up some 2696v4 recently, and they should work fine on my existing board, but those are going to be a marginal improvement, and I am looking to ~double or more.

LGA 3647/4189 Scalables won't double at all, and Broadwell-Es are neck and neck until you get into core per watt performance etc.

You'll have to go to LGA 4677. As RolloZ said, D0! Not sure why I kept saying B0.

Also patiently waiting on LGA7529/Granite Rapids but we haven't even got Emerald Rapids yet. Might not for some time as both Xeon 4/5 are still significantly new...

 

[RolloZ170]

There are rumors out there, as time passes by - (10-nanometer Intel 7) LGA4677 both 4th (SPR, Golden cove same as Adler Lake for 12th gen P-Core desktops) and 5th (EMR, Raptor cove same as 13th/14th gen P-Core desktops) gens are starting to show signs of rapid degradation (initially might not exhibit signs but later on worsening up to instability and later failure, it's related to interlayer oxidation/electromigration/conductor depletion, also o-ring overload), it wasn't identified in 2022, reports started getting out in 2023 but intel kept it quiet, now more and more statistics and reviews are out there. Voltage correction might not be enough since it also needs microcode patch.

if there is a bug in core voltage settings, this doesn't apply to SPR/EMR because they use FIVR, desktop Alder Lake and Raptor Cove not.

 

[Kizune]

ASUS W790 SAGE/ACE ($700) also supports D0 stepping natively (This can be changed with modding bios FITs for QS/Prod too)

I would LOVE to see any instructions on how to mod W790 ACE bios so i could use production steppings on them. BTW I just purchased a newly released motherboard - ASRock W790 WS R2.0, will try different revisions with it and report my findings. Right now it is the cheapest 4677 motherboard on the market - $499 new.

 

[RolloZ170]

I would LOVE to see any instructions on how to mod W790 ACE bios so i could use production steppings on them.

no x86 code is executed in that stage.
SPR-SP PRD are not started by CS ME, they are helt in Reset
how do i know ?
i prepared a BIOS with this code at reset vector.

loop:
B8 01 00 00 00; mov eax,1h
0F A2        ; cpuid
E6 80        ; out 80h,al
EB FC        ; jmp loop

QXS0,QXMV show me F2 (806F2 stepping C)
QYFQ show me F3 (806F3 stepping D0)
Q03J,Q08S shows me F4 (806F4 stepping E0)
but Q16Z (8461v EV-QS) and other higher E steppings gives nothing.
i guess the CS ME talks DMI4 to the CPU and SPR-SP prod.units can speak DMI3 only,
whereas D0 and early E0 can still do DMI4.

 

[AEKO]

hello guys juste bought a month ago an asrock c621a WS, and an 8352y es qwan cpu, i, stuck with FF erreor code could anyone help me??? and do i need and lga 4189 cooler juste to do some testing??

 

[RolloZ170]

and do i need and lga 4189 cooler juste to do some testing??

yes, to get around 70 kilogramms pressure a Cooler is very helpfull.

 

[AEKO]

yes, to get around 70 kilogramms pressure a Cooler is very helpfull.

so putting an lga 4189 cooler could make boot and pass that FF error?

 

[AEKO]

i wanted to try like that because i wanted to watercool all the thing

 

[AEKO]

okay im buying an
Arctic Freezer 4U-M
to try out and i come back to tell you, have a nice day and thank u

 

[RolloZ170]

so putting an lga 4189 cooler could make boot and pass that FF error?

how should i know ? maybe motherboard or cpu is DOA.
you need a cooler with CPU carrier to instal the CPU on the motherboard, just laying them together on the desk can't work.

i wanted to try like that because i wanted to watercool all the thing

some pins on, some not can damage CPU and mo.board, good luck.

okay im buying an
Arctic Freezer 4U-M
to try out and i come back to tell you, have a nice day and thank u

omg, bad'est mount i ever seen(but works)
have you DDR4 RDIMM already ?(desktop memory don't work)

 

[RolloZ170]

ASUS W790 SAGE/ACE ($700) also supports D0 stepping natively (This can be changed with modding bios FITs for QS/Prod too),

you may have overseen that the microcodes for all E steppings platform 87 are already included in the BIOS.

SPR-SP and SPR-WS use same microcodes (SPR-HBM Xeon Max needs other microcode same cpuid but platform 10)
i have compared microcode 806F8 plat 87 rev2B0004B1 from ASUS W790 Ace BIOS 0705 with X13SEI-F BIOS 1.4 - they are same byte by byte.
i have tested 8461v EV-QS Q16Z is 806F6 stepping E3
on my ASUS W790 Ace - the board turn on, but there is no life with this CPU.
no x86 code is executed.

 

[Kizune]

Ok, motherboard - ASRock W790 WS R2.0 - arrived. As expected does not work with the production stepping CPU (E3+) but works with D0 stepping CPU out of the box. So far i haven't found a way to engage BCLK overclocking without overclocking the rest of the component and the maximum speed selectable for non-XMP memory is 4800 (same sticks that i was able to run at 6000+ on Asus motherboard). So pros - it is quite cheap, but cons are that so far i haven't figured out how to perform advanced BCLK overclocking.

 

[MillionMiles]

So far i haven't found a way to engage BCLK overclocking without overclocking the rest of the component and the maximum speed selectable for non-XMP memory is 4800 (same sticks that i was able to run at 6000+ on Asus motherboard).

R2.0 removed AsRock hyper BCLK engine.

 

[RolloZ170]

You need this one ucode:

E3, is included in the 806F8(all Ex)

For Xeon MAX 9xxx series this one:

all this will not make them working on W790.
Xeon Max. need to supply HBM_VCCD & PVPP

 

[RolloZ170]

You need this one ucode:

Q03J and Q08S(and some more) stepping E0 are working out of the box in ASUS WS W790 SAGE SE

the BIOS uses the "one fits all" microcode 806F8 which fits
806F8(E5/S3)
806F7(E4/S2)
806F6(E3/S2)
806F5(E2)
806F4(E0/S1) <- working: Q03J,Q08S - not work: Q0KG,Q0KL
can be checked with the entended header information "ext.header entries: 5"
D0 steppings and early E0 are hermaphrodites, they work with (gigabyte)C741 and W790.
intel changed this within stepping E0: i guess at some point DMI4 is not supported but reuired to work with W790.

 

[substanc3]

Q03J and Q08S(and some more) stepping E0 are working out of the box in ASUS WS W790 SAGE SE
View attachment 38069
the BIOS uses the "one fits all" microcode 806F8 which fits
806F8(E5/S3)
806F7(E4/S2)
806F6(E3/S2)
806F5(E2)
806F4(E0/S1) <- working: Q03J,Q08S - not work: Q0KG,Q0KL
can be checked with the entended header information "ext.header entries: 5"
D0 steppings and early E0 are hermaphrodites, they work with (gigabyte)C741 and W790.
intel changed this within stepping E0: i guess at some point DMI4 is not supported but reuired to work with W790.

Has anyone tried to modify the bios to remove D0 ucode to see if Q03J/Q08S still run? Considering what we see when trying to run Q03J on C741 with no D0 microcode like supermicro, it seems to me that it might be possible Q03J depends on D0 microcode instead of E0 somehow (or perhaps it's related to uncore/ME)

 

[RolloZ170]

Has anyone tried to modify the bios to remove D0 ucode to see if Q03J/Q08S still run?

D0 806F3 don't fit E0 cpuid 806F4
Q03J and Q08S runs with X13SRA (no D0 MCU) but needs ES intel ME.

ME can block/allow D0 and early E0. but if the cpu doesn't support DMI4 the ME can't read cpuid etc.
in this early phase the CPU is a dead one, there is no intelligence, only static conf. registers.

 

[RolloZ170]

it seems to me that it might be possible Q03J depends on D0 microcode instead of E0 somehow

you can see in HWinfo which MCU rev. is loaded into the cores.
if you remove the "one fits all" 806F8 MCU the Q03J stops with a post error.

 

[RolloZ170]

And this one?
View attachment 38072

Xeon Max. can't see the sspec/QDF because of bad picture.
can't work. and if ES work, the BIOS isn't prepared for HBM.