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Finally got it working. Both 85W< TDP and ES CPUs in the Quanta crippled server. Currently running 135W QL1L 20Core CPUs in a node. Next step is to test out my custom VRM heatsinks, etc. BTW I spent days on trying to flash with Afu, FPT, Yafuflash, etc.... but for the BIOS region nothing...

I've been looking at modded BIOS writing on servers that has signed BIOS. I found some methods involving old version of AfuWin (or AfuEfi) and the /GAN option. Any chance that this would work on a Quanta server? Another Method would be flashing thru SPI. Any chance here to bypass signature check?

Ah ok yes. Doesn't really matter what I set until i test some 125-150W cpus with infra termometer on that 3+1 phase VRM. Any idea whats the spec for those top secret mosfets? Edit: btw it would be a wild idea to rebuild the missing phases? Vrm controller would need reprogramming of the number...

Nope....look again at the monitoring chart! It is 105A Also 0x69=105

Got one step further again today.... I got EVC2SE working (I spent about 2 hours trying to get it working under Win7 without luck, so I moved on to a Win10 laptop.) Finally VRM Controller detected and guess what.... it's configured at 105A ICC_Max! LOL Immediately set it to 228A, but could not...

I am back on this topic after a few days off. I found the i2c header easily, it's right next to the controller IC. I am going to try to detect it with the EVC2 next... I don't know if a supported 85W CPU is needed or not, we will see... Another question is regarding the BIOS flash. @RolloZ170...

yeah only 3 phases for Vcore then. I am not familiar with FIVR. Then it's around 90A for Vcore, which gives around 150W @1.7V. Yes I also found these mosfets are customer specifics super top secret sh*t. Datasheet is not really important as I can monitor the mosfets overload with my infra cam...

Yep, I'd be very happy with 125W TDP support. I could not find the datasheet of the VRM FETs (3 x 59953MC and 1 x 59954MC), but I guess they are 35-40A max, so ~160A total, which is 144W at 0.9V. That would be enough for me to run 6138 and such CPUs. AFAIK the TDP lock is NOT in the BIOS...

Anyone managed to find the required I2C pin headers on the "crippled" 85W locked Quanta T42S-2U node boards? It has TPS53679.

Hi, I've got a weird problem recently. I've been running X10QBI servers for some time now, but haven't seen anything like this before. I had samsung/hynix 10600R DDR3 in my servers that were working fine. Then I got access to some Micron 14900R DDR3 16GB 2Rx4 modules and they just go through...

I think there is a more general setting to override cTDP and PPT. Yes if someone knows what to configure it can be done wihtout BIOS mod through efi code. I compiled efi binary in the past that can be injected in the efi area. But how you find what MSR needs to be set to override cTDP and PPT?

Yes BIOS can also be modded on SM H11 to unlock cTDP: https://hwbot.org/image/2916873 Credits: @Cute_SC2 Update: cTDP setting is most probably available in stock BIOS on H11/12

I guess the Asus board does some kind of TDP unlock Hidden BIOS options and their default values should be compared thoroughly...

Is there such a thing? I only modded Xeon servers and there is no limitation by CPU. I wonder.

and did somebody test Asrock Spc741d8 if bios can be modded? (i know its single socket, but "very" cheap) UPDATE: it has only ucode for 6F8, but does the board accept modded BIOS? UPDATE2: With MC Extractor there are all ucodes 6F4, 6F5, 6F6, 6F8, so E0 earliest by stock BIOS, but can it be modded?

Yes I already learned that but I had bad experience with buggy GB boards from the LGA3647 era. Might give it a chance again. BTW are there any blade form LGA4677 boards available? I converted some blades from previous generations to standalone operation.

I haven't gone through the whole thread but I just want to add, that some undervolting can bring ~10% all-core performance on these kind of servers (TDP bottleneck), so it's kind of overclocking in a sense. Also PLL can be sometimes adjusted to give 2-3 MHz higher BCLK.

I enabled bifurcation support on a lot of different Aptio V BIOS boards. You simply have to unhide all related options with mmtool and then let UBU recheck it.

Hi! I've been here in read-only mode for a few years now. I've done a lot of bios mods and hw mods in desktops and also servers. But i'm lack of knowledge about how Intel ME restricts CPU support. My desire lately is building a 4th gen dual Xeon rig with some cheap D0 stepping ES CPUs. But I...