Help to overclock locked skylake xeon es cpu in Asrock x299 taichi Xe

[masterdeejay]

I bought an i9 7900x Es but is not unlocked because it is an early low freq version of xeon W-2155 not the i9 X series. It supports ecc reg, and ecc mode is working according to hwinfo so it is a xeon es. (I have a lot of ecc reg memory from older servers and chinese x99 rigs, i use 7x8gb 2666 and one 16gb 2666)
I know there is a way to overclock non k or non X skylake cpu with a motherboard that supports custom clockgen. My motherboard supports bclk overclock and has hybrid clockgen. But i dont know how to use it.
If i rase only the bclk like 101 it saves but bootloops. (Starts for 2 sec and turns off and start again for 2 sec and turns off...) only cmos clear helps. Somehow bclk oc is also locked?

It is stable and very cool at stock speeds. I have 6/12 heatpipe thermalright extreme with arctic p12.
Very low 2.8ghz all core turbo and 3.2ghz few core turbo. If i somehow can oc to at least 4ghz all core that would be good. If i set any multipiler it just stays at 2.8ghz all core, even the multicore enhancement not work.
Update:
I changed the microcode in the latest bios, so it is supporting ecc reg memory and rebar.


Old 1.1 bios

Latest bios, modded:

 

[damric]

Physically it's possible through base clock, but most likely artificially locked out by the Intel Management Engine thing via the microcode. I have not heard of anyone getting the Skylake Xeons to work like that, but that does not mean it does not exist. You probably lessened your chances also by using a new firmware.

I would contact asrock engineers through the support channels. If they physically can do it, and they are feeling generous, they might send you a beta BIOS. MSI has done that for me in the past.

If that doesn't work, maybe you can hack together your own BIOS and microcode. It's been done, but hardly anyone knows how.

 

[Zyll Goliat]

Sure it is possible to OC via BCLK but unfortunately on x99 and x299 it's a bit more difficult and most of the time people are getting at best up to the 105 bclk at most which is not that great comparing to the X79 where you could get much higher clocks(I am rocking my Xeon 2697 V2 on 115bclk).....also be aware that maybe something beside the CPU could be the problem like memory but also if you have something in PCIe slots that is sensitive when you rise your bus speed/bclk.....GL

 

[AleXXX666]

I bought an i9 7900x Es but is not unlocked because it is an early low freq version of xeon W-2155 not the i9 X series. It supports ecc reg, and ecc mode is working according to hwinfo so it is a xeon es. (I have a lot of ecc reg memory from older servers and chinese x99 rigs, i use 7x8gb 2666 and one 16gb 2666)
I know there is a way to overclock non k or non X skylake cpu with a motherboard that supports custom clockgen. My motherboard supports bclk overclock and has hybrid clockgen. But i dont know how to use it.
If i rase only the bclk like 101 it saves but bootloops. (Starts for 2 sec and turns off and start again for 2 sec and turns off...) only cmos clear helps. Somehow bclk oc is also locked?

It is stable and very cool at stock speeds. I have 6/12 heatpipe thermalright extreme with arctic p12.
Very low 2.8ghz all core turbo and 3.2ghz few core turbo. If i somehow can oc to at least 4ghz all core that would be good. If i set any multipiler it just stays at 2.8ghz all core, even the multicore enhancement not work.
Update:
I changed the microcode in the latest bios, so it is supporting ecc reg memory and rebar.


Old 1.1 bios
View attachment 275739
Latest bios, modded:

LMFAO THAT 16 GB module seems lonely here...

 

[masterdeejay]

Physically it's possible through base clock, but most likely artificially locked out by the Intel Management Engine thing via the microcode. I have not heard of anyone getting the Skylake Xeons to work like that, but that does not mean it does not exist. You probably lessened your chances also by using a new firmware.

I would contact asrock engineers through the support channels. If they physically can do it, and they are feeling generous, they might send you a beta BIOS. MSI has done that for me in the past.

If that doesn't work, maybe you can hack together your own BIOS and microcode. It's been done, but hardly anyone knows how.

I have already put the old microcode to te newest bios, but only the cpu microcode. I will try change the ME fw to an older one from a mobo that works bclk oc. The stock 1.0 bios not works so i must extract much older me fw from like asrock z170 and put that on the new x299 bios. Not an easy thing but not imposibble.

Sure it is possible to OC via BCLK but unfortunately on x99 and x299 it's a bit more difficult and most of the time people are getting at best up to the 105 bclk at most which is not that great comparing to the X79 where you could get much higher clocks(I am rocking my Xeon 2697 V2 on 115bclk).....also be aware that maybe something beside the CPU could be the problem like memory but also if you have something in PCIe slots that is sensitive when you rise your bus speed/bclk.....GL

Since skylake the cpu base clock is separated from pcie, sata..etc. So it is possible to oc above 105. If its works on desktop skylake (eary microcode) it shoud work on skylake-x.

I started modding the ME Fw but all bclk overlock is fine. No need to mod it.
I can oc to 104 but after that comes the boot loop, in windows asrock tune util on 105 i get a bsod. So somehow the pcie freq is still conneced to the bclk. But the ME fw and the microcode is good for bclk overclock.
But i think no one ever tried to oc a xeon es in x299 because it is not for xeons and not for ecc reg. If i can solve it somehow....

 

[damric]

Yeah if over 104 is boot looping then it's just like when they started locking it out with the newer BIOS. I loved my early Z170 board that could run high base clocks on those "non-overclock" processors. I hope you get it working.

Edit: did you lock in all of your RAM timings, then dial it back a bit? If not then you're going to crash due to the RAM just not being able to handle the frequency.

 

[masterdeejay]

Yeah if over 104 is boot looping then it's just like when they started locking it out with the newer BIOS. I loved my early Z170 board that could run high base clocks on those "non-overclock" processors. I hope you get it working.

Edit: did you lock in all of your RAM timings, then dial it back a bit? If not then you're going to crash due to the RAM just not being able to handle the frequency.

Over 100 bclk the mobo auto reduce the ram freq to 2200 from 2666.

 

[bobbybluz]

Since it's an engineering sample there's no telling exactly what's locked internally in it and at what speeds. On my E3 and E4 Xeons the best stable BLCK overclock on all of them is 103.5. On my X79 E5 1680 V2 I'm able to run 105.

 

[Nano-x99]

I am in possession of the i9 processor confidential qlrx 2.40ghz

I’m desperately looking for a compatible motherboard for this processor.

But I couldn’t find confirmation for compatibility.

For certainty it is the ASRock Taichi X299 motherboard.

ASRock > X299 Taichi

ASRock Super Alliage<br />Accepte les processeurs Intel Core™ X-Series socket LGA 2066<br />13 phase de puissance, Dr. MOS<br />Supporte DDR4 4400+(OC)<br />4 PCIe 3.0 x16, 1 PCIe 2.0 x1<br />NVIDIA 3-Way SLI™, AMD 3-Way CrossFireX™<br />Audio 7.1 CH HD (Codec Audio Realtek ALC1220)...

www.asrock.com

Would it be possible to get a link to the last patched bios?


Thank you for.