ES Xeon Discussion

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Aclesc

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Oct 14, 2025
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unknown, possibly it is rejected by BMC flash function. then you need SPI programmer.


we have flashed BIOS T01 on a MS73-HB1, so this should work.
it is possible to enable the hidden options in the BIOS of the ms03-ce0 motherboard, such as enabling the base frequency options
 

acesea

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Oct 7, 2011
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the system boots (BMC/Memory) but then gets stuck at "Chipset Initialize," even overnight.
Were you able to successfully flash an older bios onto your board through the BMC webpage and resolve your stuck at "Chipset Initialize" issue?

I am experiencing the same issue. Bought a new board that came with R18. Using ES cpu the board gets stuck at "Chipset Initialize ..." screen. Cannot find older bios versions.

Does anyone know how to successfully downgrade Gigabyte MS33/MS03 boards and flash older bios using the BMCWEbGUI maintenance website ?
 
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RolloZ170

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Apr 24, 2016
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Does anyone know how to successfully downgrade Gigabyte MS33/MS03 boards and flash older bios using the BMCWEbGUI maintenance website ?
PM you already (i am located in EU so possible time diff.)
you can downgrade, i have old BIOS for almost all Gigabyte LGA4677 mobos....
 
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8bits1byte

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Jan 6, 2026
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Any information on the following sample: Intel Xeon 1.30 GHz Sapphire Rapids QWY2 LGA4677 Server ES CPU Processor

CPU image

Picked up a board for $200 and hoping to make use of it:
ASRock Rack SPC741D8-2L2T CEB Server Motherboard Single Socket 4th Gen Intel® Xeon® Scalable Processors (LGA 4677) C741 4 PCIe gen5 Dual 10G & 1G LAN

It seems this board has the least amount of compatibility, saw one comment recommend return this board for gigabyte but for the price is it worth the hassle? This cpu doesn’t have much information but this is in the US so a return will be much easier and cheaper compared to China imports.
 

RolloZ170

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Any information on the following sample: Intel Xeon 1.30 GHz Sapphire Rapids QWY2 LGA4677 Server ES CPU Processor
stepping B0. return or put in trash bin.
go with QYFS, $115 usd
It seems this board has the least amount of compatibility,
better compat. than supermicro.
i have QYFQ run on SPC741D8UD-2T_X550 so i should able make a BIOS for SPC741D8-2L2T to run QYFS (or EMR A0 ES)
 
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Mamool

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Jan 5, 2026
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Hello, I can acquire Asrock W790 WS 2.0 for a good price and wanted to ask about the best ES for this board, are there any significant diferrences between QYFS, QYFR models? I can't really find the QYK8 variant anywhere that ships to me. Is rdimm ecc ram required to run such setup?
 
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8bits1byte

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Jan 6, 2026
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stepping B0. return or put in trash bin.
go with QYFS, $115 usd

better compat. than supermicro.
i have QYFQ run on SPC741D8UD-2T_X550 so i should able make a BIOS for SPC741D8-2L2T to run QYFS (or EMR A0 ES)
Thank you for saving me a week or 3 of frustration. I’ll look into both processors.
Is there a reason to choose one or the other from what you listed? More feature complete or hidden features?

I found a listing that includes the QYFS and goes up to QYFR. I don’t mind paying a slightly higher price to guarantee a couple less headaches.
So wondering and checking which of these is “better” since core count and clock speed is close enough for me: QYFQ, QYFP, QYFU, QYFR, QYFS

I’ll do some more digging on the differences through the forum (over 200 pages now) and google around.
 

RolloZ170

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I found a listing that includes the QYFS and goes up to QYFR
i think they write because HWinfo reports "QYFS/QYFR ES2"
So wondering and checking which of these is “better” since core count and clock speed is close enough for me: QYFQ, QYFP, QYFU, QYFR, QYFS
QYFQ, QYFP = 270W low clocks
QYFU = single socket only
QYFS(QYFR) = best value
 
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RolloZ170

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I found a listing that includes the QYFS and goes up to QYFR
Is there a reason to choose one or the other from what you listed? More feature complete or hidden features?
i realy don't know. i don't have a HWinfo report from QYFR to compare with QYFS.
one of them can be ES of processor who was not included in the final SKU list, or a ES of OEM custom.
 
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8bits1byte

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Jan 6, 2026
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i think they write because HWinfo reports "QYFS/QYFR ES2"

QYFQ, QYFP = 270W low clocks
QYFU = single socket only
QYFS(QYFR) = best value
All of these would require a modded bios right or a specific bios version?
Looked at the motherboard es spreadsheet and it didn’t list any d0 chips for asrock c741 but if you can help with the bios, I’ll order one of these.

It did have some e0 chips listed: Q0KL,Q0KG,Q0KH,Q0KS,Q0KJ

Since these share microcode with production e5 chips I should be able to use any official bios release? Same with QS samples? I could get away with lower core count too but the prices jump quickly.
 
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8bits1byte

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Jan 6, 2026
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i realy don't know. i don't have a HWinfo report from QYFR to compare with QYFS.
one of them can be ES of processor who was not included in the final SKU list, or a ES of OEM custom.
Found an old reply that QYFR does NOT have accelerators and someone else saying QYFS does have accelerators.
 

RolloZ170

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All of these would require a modded bios right or a specific bios version?
SPR-SP D0 ES work with Gigabyte up to R12/R17 BIOS (varies with model)
CSI/MRC 114.D30 = work
CSI/MRC 115.D14 = not work
Looked at the motherboard es spreadsheet and it didn’t list any d0 chips for asrock c741 but if you can help with the bios, I’ll order one of these.
mod. BIOS required in any case for SPR D0 and EMR A0 ES, i have D0 and A0 working on ASRock Rack C741.
It did have some e0 chips listed: Q0KL,Q0KG,Q0KH,Q0KS,Q0KJ
later SPR-SP E0 stepping work (but not early E0 like Q03J e.g.)
Same with QS samples?
QS is Retail silicon just with ES bit enabled, work on all motherboards who support the Retail version.
 
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Bob_R

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Dec 13, 2025
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Hello,

Need some help badly.

Gigabyte MS73-HB1 not posting with 2 CPU's - Boots fine with each CPU only in socket 0

Mobo is at the latest BIOS (R20) (and new)

Each ES Xeon will boot fine when only in CPU0 socket. Same RAM, GPU, everything. The other CPU swapped in socket 0, also fine, both each boot ok.

However, when both CPU are in it will not post at all. Socket pins are fine this is a new MoBo. Change order of CPU in sockets, swapped RAM, make sure thermal paste / heatsinks / fans are perfect, still nothing.

Reset BIOS, changed to new CMOS battery, still nothing. Any idea what is going on here?
 

frogelder

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Aug 8, 2023
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z13pe doesn't support pcie bifurcation, even with 2*80 pcie lanes provided by cpu... Is it normal on Xeon motherboards? But I see gigabytes supports this feature from other's posts. I haven't met this problem on asus epyc motherboard.
 

RolloZ170

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Apr 24, 2016
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z13pe doesn't support pcie bifurcation, even with 2*80 pcie lanes provided by cpu... Is it normal on Xeon motherboards?
some models are mobo for servers with auto bifurcation enabled.
there are many EPYC motherboard without bifurcation.
edit:
Z13PE
D16 or D32 ?