Gigabyte b760m undervolting a 12400f by 150mv - 100w total from the wall with dgpu. Amazing news
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- Опубликовано: 6 сен 2024
- A microcode bug finally allows true undervolt on Alder Lake - system crashed at -170mv, booting and running cinebench at -150 resulting in just 55w CPU power reading in hwinfo, 100w from the wall using a wx4100 gpu. Bios version is F1 !
/ undervolting_on_b760
UPDATE 30/06 - a common pattern i found is that all the working combos have actually the die cut down from full 8+8 C0 silicon. Also, to complicate things, some individual CPU samples from H0 also had better silicon quality wich could allow to sustain the -50 offset limit on MSI boards anyway.
I will test some more boards in the buture, z690 from MSI if possible, with H0 cpus to further investigate this. Further explanation on the differences www.hwcooling....
UPDATED LIST of tested boards:
Z690 UD DDR5 with F21 and F23a - WORKING with C0 cpu
z790 UD AX with BIOS f2 - NOT WORKING with H0 cpu
B760M Aorus Elite DDR5 with F1 and F3 - NOT WORKING with H0 cpu
B660M GAMING X AX with F4 and F22 bios - NOT WORKING with H0 cpu
F21 and F20 WORKING with C0 cpu
B660 DS3H AX DDR4 with F4 and F22 bios - NOT WORKING with H0 cpu
ASUS ROG STRIX B660-I GAMING WIFI bios 1620 - WORKED TWO MONTHS WITH C0 i5, NOW TOTALLY BROKEN IN A DIFFERENT WAY - • ASUS failing on me aga...
further testing is needed!
My website - www.pizzaunder...
My lab - / mir_computers
My italian partner channel - / falco75
My swedish partner channel - / miyconst
important and SAD update: it seem to be totally RANDOM wether undervolt gets enabled on these boards. I got it working with a couple and got excited, but now the undervolt seem broken again: it will tank performance at around 50 offset and then CRASH at around 150, even with a board that was working last week (just cpu swapped from 12400f to 12600). I am invastigating wether there are some specific cpu that do work. I have so far shipped 1 z690ud and 1 b760m gaming x ax (the one in the video) to clients that are working, i have a b660m gaming x working here, but another z690 UD and b660m i purchased last week are now under testing and DO NOT WORK with the same f21 bios that was working on the same model before, using different 12400f / 12500 / 12600 cpus
the craziness is that with these bios at over 150 you still get the system to crash, wich previously wasn't the case, so something sticks.. but only the bad part
ah man so the same nonsense I am running into on my 12500... its really a shame as a 100mv undervolt would help so much in my SFF case. But If I even touch a minor undervolt it tanks performance.
@@Demon09-_- it worked ok some samples. but even the same board same bios stopped working as i swapped CPU
Any updates on this? I am Considering undervolting mine. Are you setting specific voltage or using voltage offset?
@@kimolsson1772 hello! I have found out that its based on the die, H0 cannot undervolt while C0 can! Very logic! Therefore a 12700f would be the best bet for cheap undervolt!
On my gigabyte b660 even if i undervolt for just -10mv the performance already drops. Can you show how you do it in the bios
Yes , that is reported on all my previous videos. I have a lot of content on that issue. There is apparently a microcode version 0x104 that has the undervolt functionality working! I am currently investigating. A list of tested configurations is in the description.
I flashed the oldest bios available that doesnt have that microcode,january 2022 exactly,and performance still drops when undervolting.If only throttlestop would work and we wouldnt have to do it in the bios...
@@eduardionescu6291 i am looking for the right buis myself. Sadly the z690UD that also had undervolt working is already gone to the client! -165 stable on that one sample with the PA120 cooler, fans never spinning not even under cinebench r23!
@@eduardionescu6291 b660m gaming x bios f20 works perfectly with undervolt
hello i have a b760m gigabyte gaming x and the latest bios paired with a 13600kf , can you help me or give me advices to undervolt it plss 🙏
hello, K CPUs should have no issues with undervolt with the first bios release, and then you should also get a toggle for the older microcode in new bios release
@@mircomputers when i change Mcu to 0014 when i start i get a bleu screen
How about the vram performance b760m gaming gigabyte motherboard looking to pair with 13500
Temperature and performance please reply
Get a ddr5 board, its 2023 and i bought this only for compatibility with b660m gaming x hackintosh
i got 12400f @ 5ghz but it only use 1.0v when load. It does not crash
Which Bios ver do you have?
C0 stepping, you can undervolt + overclock at the same time on that die; h0 can only OC
he is not on this board, it does not have clock generator
any experience with the b660 itx thats in the desk meet from asrock? im hoping at least something like load line calibration will allow for some undervolting on a 12400f
nop, i don't trust asrock anyway
@@mircomputers seems just like all the other b660's its a nope its really sad to see intel make it so hard to undervolt. You basically need both undervolting protection and intel IA CEP as bios settings otherwise both will make undervolting not work. I can undervolt on the asrcok but will drop huge performance even for minor undervolts when IA CEP kicks in but since the settings not there its a rip. even just going down one step in load line calibration makes it kick in.
@@Demon09-_- on MSI boards cpu lite load works fine all the time ! that's the only 100% reliable way
Does a Aorus B760 Elite X Ax have an undervolting option?
Do you have any coil whine with this motherboard? A lot of people are complaining about that with Gigabyte motherboards.
What is your CPU revision - C0 or H0?
Nop, no issues on that side; i also never heard that on any other board, but i only use H0 cpus, as i like lower power and smaller ringbus, no e-cores for audio and gaming.
I have never had a single one 12400f / 12500 / 12600 come to me in the full C0 die, i do check everytime the back of the cpu and spec number and would return them if found.
Gigabyte B760M Aorus Elite AX Motherboard this good from i5 12400f processor
sadly no undervolt on that board :(
Can i undervolt 13600k on this board?
K skus should always undervolt on every board/bios even though i had issues on Asus boards
@@mircomputers nah man intel made the board manufacturers to block it on b660 for example
So they can sell more z690
@@MegaChickenPunch this b760m and MSI b660 can undervolt no issue.
z690 asus boards can't undervolt i5 12400f / 12500 / 12600 - and b660 asus can't undervolt 12600k ( instant crash with every offset positive or negative for me, other reported loss of performance like locked CPUs )