Finally: Overclocking EPYC Rome ES

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RolloZ170

Well-Known Member
Apr 24, 2016
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None of those "retail" QS rome with suffix -05 or -03 can be overclocked. I can't say for sure that ALL -04 suffix retail part numbers can be overclocked
-04 can NOT be a retail CPU.
-05 -03 or -0? is in any case an AMD confidential engineering sample, can be early ES or QS.
for 7502 QS you see "100-000000054-04" on the heatspreader but NOT "7502"
in CPU-Z you don't see "EPYC 7502" but "100-000000054-04_32/24"
7502qs_ebayBsth.jpg7502 retail.jpg
 

pututu

Member
May 7, 2016
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hardforum.com
-04 can NOT be a retail CPU.
-05 -03 or -0? is in any case an AMD confidential engineering sample, can be early ES or QS.
for 7502 QS you see "100-000000054-04" on the heatspreader but NOT "7502"
in CPU-Z you don't see "EPYC 7502" but "100-000000054-04_32/24"
View attachment 33001View attachment 33002
I know. That's why I used "retail" in double quotes. From what I see in ebay, sellers posted this cpu with heatspreader marked 100-000000054-0x always refer to this as 7502 QS or ES to improve search. The understanding is that the 100-000000054-0x was made available first for testing/qualification before the official retail version 100-000000054 (aka 7502) came out. Honestly ebay is the platform where you can find boatload of QS/ES chip. BTW, not saying it is legal to sell this.

Appreciate the insights y'all.

This originally started from finding a few sources that mention open PBO on 7R12 (not unlocked, specifically PBO). There's no evidence beyond the claim, so I was curious if this was typical of the custom SKUs or if this is something potentially unique to the 7R12, or more likely false claims by resellers. They've started showing up in droves on ebay, but I've yet to see evidence someone has ever actually run one.
If you are looking for higher clock speed but with reasonable number of cores, the 32-core 7502 QS -04 version can achieve higher clock speed than the 48-core 7R12 when you overclock it carefully.
 

RolloZ170

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Apr 24, 2016
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Honestly ebay is the platform where you can find boatload of QS/ES chip. BTW, not saying it is legal to sell this.
Eng.samples (QS are ES too)
ES are not for sale or resale. ES can become yours in some cases, and then of course you can sale em.
the original customer of the ES gets them in a contract/NDA with sone rules, if he gives the ES to other people(or sale) he bricks the contract with the manufacturer(intel/AMD), the buyer is fine.
you can buy Intel ES/QS from ebay sellers located in santa clara, intel does not care.
 

EPYCtheepyc

New Member
Oct 6, 2023
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I have two CPUs ES CPUs- one 64 core and one 32 core, Am I going to be able to boot It up with one CPU in socket 1? H11 DSI.
 

RolloZ170

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Apr 24, 2016
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I have been reading this thread and a lot of people say that you need two identical CPUs for a dual socket motherboard, 1 ES CPU in a dual socket motherboard won't work.
IF you want to run TWO ! they must be the SAME !
only one is first socket works, even with ES.
edit: seems this rule is not valid for AMD EPYC.
 
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RolloZ170

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Apr 24, 2016
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I'm unable to make it work. no POST , CPU Fan spins and I'm even unable to shutdown the system from IPMI.
you need special BIOS for ES to work. would help to know what type of ES you have or read this thread from the beginning.
 

Keith Myers

Active Member
Oct 10, 2020
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No, you won't. Server cpus are generally not overclockable. You can however increase the cTDP and PPT limits in the UEFI to get the cpu to clock at its highest power limit. That helps with keeping the base clock up on higher loads.

Look in the AMD CBS >> NBIO >> SMU options page for those settings.
 

RolloZ170

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Apr 24, 2016
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No, you won't. Server cpus are generally not overclockable.
not correct at all. der8auer overclocked EPYC 7601 to all core 3,8 Ghz and more on a supermicro h11ssl
and dual 7601 on a ASUS SP3 board.
afaik he used a customized ZenStates app. to overcome the OCP shutdown of the VRM unit he tweaked the VRM controller with ElmorLabs EVC device.
 

Billyherington

New Member
Feb 4, 2024
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not correct at all. der8auer overclocked EPYC 7601 to all core 3,8 Ghz and more on a supermicro h11ssl
and dual 7601 on a ASUS SP3 board.
afaik he used a customized ZenStates app. to overcome the OCP shutdown of the VRM unit he tweaked the VRM controller with ElmorLabs EVC device.
My config: supermicro h11dsi rev 2.0, 2 amd epyc 7551, what are the chances that will be able to overclock the processor through life hacks?
 

Billyherington

New Member
Feb 4, 2024
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No, you won't. Server cpus are generally not overclockable. You can however increase the cTDP and PPT limits in the UEFI to get the cpu to clock at its highest power limit. That helps with keeping the base clock up on higher loads.

Look in the AMD CBS >> NBIO >> SMU options page for those settings.
I just don't quite know how to recognize that the "processor" is engineering.
It seems that can overclock the engineering processor?