Xeons with an open multiplier

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ccie4526

Member
Jan 25, 2021
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I'd like to report a successful overclock of a Dell T5810 workstation using an unlocked Xeon E5-1650z3 to 4.5GHz.
The Xeon is known to be unlocked, but we weren't sure if the workstation chipset would allow overclocking in these systems.
Intel XTU, and Throttlestop software can do this on the locked BIOS system. Throttlestop is preferred by this user. His posts start at #1018 on this page.
WARNING Dell went to a proprietary plug and play PSU format on their workstations newer than T3500. Do your research on this if you want run a bigger PSU in one of these.
I'd like to know what motherboard and BIOS revision being run there. I'm on a T5810 with a K240Y board with A33 BIOS, same processor, but Throttlestop says "Turbo Overclocking - Locked" and I can't change anything.

Edit to add: Looks like I had to do a sleep/wake cycle to get the system unlocked. Default max multiplier is 38, seems I can only push to 40 without bluescreening.... so 3.990GHz CPU.
 
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Retrorockit

New Member
Mar 22, 2018
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Reply to T5810 overclocking question. It's a work in progress. (Not my own).

You can go to the Throttlestop Overclocking Desktop PCs forum to see his project. There is only one person I know of working on that system, and he just recently got control of Voltage to get a serious overclock going. He now has more cooling work to do.
Here is his userbenchmark from today.
Here is the latest page on that thread.
I didn't see your post because I didn't have anything new to add here for a long time. Sorry it took so long, but the answer was unknown until now.
I stand corrected, he had a faster run there 4.8Ghz
Like I said, a work in progress.
 
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gsrcrxsi

Active Member
Dec 12, 2018
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Hey guys, bringing this back up a bit. the E5-1660v4 ES (QK3S) can/should be added to the first post as overclockable. I have one running 4.0GHz as a conservative OC (my workload doesnt need clock speed too much). and incredibly, I can run my 16GB Micron DDR4-3200 RDIMMs at the full 3200MT/s speed, even though the retail chip only supports 2400MT/s.

but I have an interesting use case, in that I need lots of system memory and RDIMM support. so I'm stuck with Xeons. but I would also like to bump the core count up at some point, as I think it would be beneficial for my workload. this is a ML agent training type workload.

is there any E5-1600/2600 v4 ES that is also overclockable like this one, but with more cores? something like 16c/32t might be ideal. my goal is to get more cores, but still be able to run the 3200MT/s memory like I am now. I'd be willing to give up some clock speed, but want to keep the 3200MT/s memory if possible. I know I could go all the way to a 22-core part, but I'm worried that a retail chip would kick me back to 2400MT/s memory.

unless this is more on the motherboard than the chip itself? can you OC the memory on X99 with Xeon v3/v4? ("overclocking" in terms of the CPU motherboard, since this memory is rated to run at these speeds anyway)

current setup:

ASUS X99-E-10G WS motherboard
E5-1660v4 ES (QK3S) OC to 4.0GHz and 3.2GHz cache
128GB (8x16GB) Micron MTA18ASF2G72PDZ-3G2E1TG @ 3200 MT/s
RTX 3060
 
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bayleyw

Active Member
Jan 8, 2014
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Hey guys, bringing this back up a bit. the E5-1660v4 ES (QK32) can/should be added to the first post as overclockable. I have one running 4.0GHz as a conservative OC (my workload doesnt need clock speed too much). and incredibly, I can run my 16GB Micron DDR4-3200 RDIMMs at the full 3200MT/s speed, even though the retail chip only supports 2400MT/s.

but I have an interesting use case, in that I need lots of system memory and RDIMM support. so I'm stuck with Xeons. but I would also like to bump the core count up at some point, as I think it would be beneficial for my workload. this is a ML agent training type workload.

is there any E5-1600/2600 v4 ES that is also overclockable like this one, but with more cores? something like 16c/32t might be ideal. my goal is to get more cores, but still be able to run the 3200MT/s memory like I am now. I'd be willing to give up some clock speed, but want to keep the 3200MT/s memory if possible. I know I could go all the way to a 22-core part, but I'm worried that a retail chip would kick me back to 2400MT/s memory.

unless this is more on the motherboard than the chip itself? can you OC the memory on X99 with Xeon v3/v4? ("overclocking" in terms of the CPU motherboard, since this memory is rated to run at these speeds anyway)

current setup:

ASUS X99-E-10G WS motherboard
E5-1660v4 ES (QK32) OC to 4.0GHz and 3.2GHz cache
128GB (8x16GB) Micron MTA18ASF2G72PDZ-3G2E1TG @ 3200 MT/s
RTX 3060
No 2600v4 parts are overclockable to my knowledge.
 

gsrcrxsi

Active Member
Dec 12, 2018
293
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thanks, but I obviously can't use lga3647 cpus on my x99 lga2011-3 board. I need an ES that fits this board.

does anyone have any specific skus/models I can search for?
 

gsrcrxsi

Active Member
Dec 12, 2018
293
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that's a little too vague for any relevant results. do you have any specific sku numbers that correspond to ES models of OEM v4 skus? like how QK3S is the ES for my 1660v4, i need those "Qxxx" numbers
 
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RolloZ170

Well-Known Member
Apr 24, 2016
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that's a little too vague for any relevant results. do you have any specific sku numbers that correspond to ES models of OEM v4 skus? like how QK32 is the ES for my 1660v4, i need those "Qxxx" numbers
if i know some i would give the QDF. what i say was "if they are - they will be ES of OEMs"
by the way: QK32 is unknown to me. there is a 1660v4 QK3S ES2 and QKFE QS.
 

gsrcrxsi

Active Member
Dec 12, 2018
293
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you're right, QK3S is it. I misread some online posts about the code. I have the cooler on there now, and didn't feel like taking it off and re-pasting to read the code lol. edited my posts to reflect the right code.

but what about the flip side with retail chips. since this board is a very capable overclocking board, is there any hope to run these 3200 MT/s RDIMMs at their rated speed by just setting the memory speed in the BIOS? without messing with the CPU clock multiplier (locked). as they are running 3200 now on this 1660v4 ES, but I'm not sure if being unlocked multiplier helps anything with running the memory faster.
 

Roman81

New Member
Jul 20, 2023
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Hi I got a deal on an x99 mobo with a 5820x, already got 1 x99 machine with a not great 5960x in it OCed to 4.5 all core and 4.7 up to 4 cores and want to see if I can get out of it more with a Xeon CPU, no particular needs just playing around for fun.
Read the entire thread and from what I understand 1680 V3 is my best option but I would like more cores, did any1 find any V4 CPUs with unlocked multiplayers?
 

xinzhiqiang

New Member
Nov 9, 2023
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ES can be unlocked. there is only one unlocked xeon scalable(lga3647) prod. unit Xeon W-3175X,
but some unlocked ES like QL2K,QL2H,QLJ1,QLKG,QLKH,QL59,QRDK(3175x QS)
Hi, RolloZ170. I got 2 QL2H today, and how can I change it's multiplier? My motherboard is X11DPG-QT, It seems that Intel XTU does not work. :(
 
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RolloZ170

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Apr 24, 2016
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Hi, RolloZ170. I got 2 QL2H today, and how can I change it's multiplier? My motherboard is X11DPG-QT, It seems that Intel XTU does not work. :(
note first Intel XTU does not support dual socket OC. some cores may unaffected.

BIOS settings ( these may hidden, but AMIBCP should work for X11 )
disable energy efficient turbo
CPU P State control OC.jpg
disable OC Lock
Overclocking OC.jpg
change current linit overrides
Package Current Config OC.jpg
disable RAPL Limit MSR/CSR Locks
Socket RAPL Config OC.jpg
 

RolloZ170

Well-Known Member
Apr 24, 2016
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It seems that Intel XTU does not work. :(
to change package OC setting you have to run the code to change MSR/CSR on a core within the package,
XTU and TS (throttlestop) seems to run these code only on the first threads, so only the first socket is affected.
with TS there is a workaround.
start TS, make settings. then remove the threads of the first socket from TS app.(taskmanager,affinity)
then make same settings on the 2nd socket.
or write an EFI driver to make that setting: similar was done with Xeon E5-26xx V3 turbo unlock hack.