ES Xeon Discussion

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RolloZ170

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Apr 24, 2016
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Simple, QYxx boots on Gigabyte, Q0xx boots on everything, QXxx and older boot on nothing. QYxx additionally boots on Asus W790 due to a lucky fluke.
pls ask before, there are some exceptions in this rule.
i.e. QY36 = stepping C2, like QXxx
if you get a HPE server with very early BIOS you are lucky, but have to stay with old BIOS until the last days.
 

scouzi

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Jan 8, 2024
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Simple, QYxx boots on Gigabyte, Q0xx boots on everything, QXxx and older boot on nothing. QYxx additionally boots on Asus W790 due to a lucky fluke.
It seems that Gigabyte considers D0 as 'production' if you read their BIOS release notes. Some of their BIOS screenshots inside the manuals are showing D0 (from 2022 pre-release era). I'm sticking with Gigabyte even though I'm not too happy about their response on cracked RTX GPU cards. Also, Gigabyte LGA 4677 MBs seem to be in short supply at a reasonable price.
 

scouzi

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Jan 8, 2024
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View attachment 33795
There in his last picture he has 96 cores. so the previous picture with 48 cores, and the benchmarks could be with one cpu active, or with 2 cpu, but on each one only half the cores active! But i was probably just to paranoid. I wrote with him, and he seems an honest seller. But it all does not matter so much any more. The many screenshots of you and others, made it very clear that the low scores were not inherent cpu issue but just setup or memory issue. Thanks for clearing that up.

But now, since low performance can be related to memory, i have some questions about memory.
You write that these Xeons have 4 dual channels memory controllers.
Does that mean i need to buy a minimum 8 RDIMMS to avoid any significant performance penalties?
Or would 4 RDIMMS with dual rank also be OK?
My preference would be 2 RDIMMS , such that i can expand later, but based on what i saw fear this would initially limit performance.
Also there are many 2Rx4 RDIMMS, since the width is only half compared to 2Rx8, would that give signifficant performance penalties?
With performance penalty, i mean roughly differences larger than say 20% from optimal speed assuming the workload is large but fits in memory. I am sort of on a budget, and i want to avoid to buy a silly memory setup.
I noticed that a lot of screenshots from different China based sellers are identical. They all share the same screenshots. These sellers are somewhat relatated somehow.
 
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sam55todd

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May 11, 2023
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..I was thinking about Fractal Define 7 XL or Fractal Torrent, as they have official support for EEB sized motherboards and not as huge/expensive as V3000...
The reason I've specified larger cases was because majority of use-cases requiring 7 slots of x16 PCIe (e.g. GPU rendering or ML compute workstation) would have higher power requirements (350Wx7=2.5KW + CPU and other subsystems), therefore case needs space for convenient mount of two power-supply units. Anyhow this non-ES stuff is offtopic here, discussed on other threads I'm not a big fan of.
 
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RolloZ170

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It seems that Gigabyte considers D0 as 'production' if you read their BIOS release notes. Some of their BIOS screenshots inside the manuals are showing D0 (from 2022 pre-release era)
D0 microcode is marked as PRD state.
also it unclear why ASUS and ASRock keep this MCU in they're W790 boards.
 

RolloZ170

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And how is memory compatibility of D0 compared to later Ex or even retail CPUs?
depends on the model. on ASUS W790 Ace & SAGE QYFP,QYFQ,QYFS.... support overclocking
and works with Kingston Renegade Pro DDR5-6000
...memory copatibility is more BIOS thing, should fine if you can run latest BIOS.
 
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RolloZ170

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I noticed that a lot of screenshots from different China based sellers are identical. They all share the same screenshots. These sellers are somewhat relatated somehow.
and the chn copy/steal images from others as well, nobody cares.
 

sam55todd

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May 11, 2023
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not really. you have 8x dual channel - or 2x 8 channel in best case.
its hard to get a single socket board to have 8 channel interleaving, and will be impossible on dual socket boards.
Decided to google again for memory related performance tests, I've compared Conjugate Gradient benchmark (sensitive to cache and memory, but not sure where it's bottlenecking between those two) from results pictured here:
CPU/Score (core/threads/Base Ghz)
8380 1P = 20.65 (40/80/2.3)
8280 2P = 28.98 (28/56/2.7 x2)
8490H 1P = 31.24 (60/120/1.9)
8592+ 1P = 35.42 (64/128/1.9)
8380 2P = 40.31 (40/80/2.3 x2)
8490H 2P = 60.42 (60/120/1.9 x2)
8592+ 2P = 70.95 (64/128/1.9 x2)

And it feels like if we check performance adjusted for core counts and memory frequencies - results attributable to better memory (channels, frequencies, DDR4toDDR5) aren't revolutionary different, even arriving to a conclusion what personally to me further investment into neither Sapphire nor Emerald Rapids are not even close to be justifiable at current ebay prices (despite Prod stepping QS and $ being multiples below Intel's advised prices), I mean I have it already for back then affordable price but won't be upgrading in near time to Dual-socket variant.
 

bayleyw

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Is SPR even good as an ML host? There are references to there being 4 32-lane PCIe root complexes which is not ideal for your communications collectives and the block diagram shows two PCIe "blocks" per quadrant.
 

DHamov

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Jan 12, 2024
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pls ask before, there are some exceptions in this rule.
i.e. QY36 = stepping C2, like QXxx
if you get a HPE server with very early BIOS you are lucky, but have to stay with old BIOS until the last days.
What about the compatibility of: QY08, 8468, ES CPU, 1.9GHZ, 3.3GHz, x 40, 48C/96T?
Would it be compatible with asus W790? I asked the ebay seller and they told me not compatible.
So is this another exception, or maybe the seller is just not sure and to honest?

Current ebay sellers block the TDP of QY08 in their screenshots and only mention it runs on 350W supporting mainboard.
I saw mentions of higher TDP's for some 4677 processor like 385W.
Can anyone confirm the TDP of QY08?
 
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RolloZ170

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What about the compatibility of: QY08, 8468, ES CPU, 1.9GHZ, 3.3GHz, x 40, 48C/96T?
Would it be compatible with asus W790?
simply yes. ASUS W790 does not block any TDP, it is an OC board.
you see on the CPU-Z shot the seller runs two QY08 on a dual socket board. chn. mostly use Gigabyte MS73 or SM X13DEI.
some D0 ES2 freeze on windows/linux loader:
this solves the issue.
set CPU C-states to enabled(def.=auto) only then next options comes visible.
and set Package C-State to C2(or C0/C1)
cpupowermanagementconn2ihp.png
 
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RolloZ170

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RolloZ170

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Current ebay sellers block the TDP of QY08 in their screenshots and only mention it runs on 350W supporting mainboard.
I saw mentions of higher TDP's for some 4677 processor like 385W.
Can anyone confirm the TDP of QY08?
Here's the full shot.the HWInfo screen show a 56C processor, So something is wrong here, weird.
QY08.jpg
 
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DHamov

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Jan 12, 2024
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Besides the usual suspects from GIGABYTE MS03-CE0, MS73-HB1 and HB0.
There are now also newer boards, MW83-RP0, and updates like MS03-6L0 and MS73-HB2.
My question is does GIGABYTE maintain compatibility with D0 and other ES stepping that they previously supported also in their newer boards and BIOS?
 

RolloZ170

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Apr 24, 2016
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Besides the usual suspects from GIGABYTE MS03-CE0, MS73-HB1 and HB0.
There are now also newer boards, MW83-RP0, and updates like MS03-6L0 and MS73-HB2.
My question is does GIGABYTE maintain compatibility with D0 and other ES stepping that they previously supported also in their newer boards and BIOS?
MW83-RP0 is a W790 board.
new. rev. 3 brings only out of the box support of Emerald Rapids (BIOS R01,R02)
Zwischenablage_01-17-2024_01sth.jpg
 
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DHamov

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Another question is about the P-cores and E-Cores. Official intel specs, list different frequencies for the e-cores and p-cores, and for most of the discussed Xeon cpu's here 16 p-cores are stated. While users also often speak about all-core boost/turbo. Not really differentiating, between the different types of cores. Does it mean that the difference is just not that visible?

For the normal 1700 socket intels for some applications, performance gains can be obtained, by disabling the efficiency 'e-cores', in the bios. Giving more power/cooling to the 'p-cores', enabling higher clocks. In an earlier post in this thread (here) , i RolloZ that disabled cores in the ES versions of Ice-lake based Xeons. Did anyone here try such things on the Sapphire Rapids ES Xeons?