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Unlocking Power Limits Looks Safe on Mew Microcode

Vynra
Level 12

So I decided to download the newest beta BIOS and do a bunch of testing with the new microcode (asus oc profile default auto bios optimize 253 pl1 and 4095 pl2 and 511.75 core/cache current)

tldr: the microcode that stops insane voltage requests seems to still be active with no power limits. (at least confirmed on ASUS. cannot speak on other brands)

here's the proof:

specs: 14900k, apex encore z790,rtx 3080, 7600 ddr5 ram

CINEBENCH R23 TESTING

before with MCE on auto/on, the all core frequency for 14900k was 5.7/4.4 ghz on the p/e cores.

this is no longer the case even with iccmax unlimited.

now in cinebench r23 the all core frequency would bounce between 5.5 and 5.6ghz. I found this to be super temperature dependent, i found cores that hit 90c is where the temp would make clockspeed drop from 5.6 to 5.5 but would maintain at least 5.5ghz (this depends on your cooler)

undervolting allowed me to get cooler temps and sustain 5.6ghz longer. power was 325w max.

Cinebench 23 Results

CINEBENCH R24 TESTING

Im actually not sure what instruction set cb24 uses but it seems to be not as intensive as cb23 in terms of raw power.

in this test i was able to have my clock speed at 5.6ghz consistently, 317w max

Cinebench 24 Results

PROOF INTEL STOPPED VOLTAGE INSANE VOLTAGE REQUESTS

There is only 2 ways for someone to monitor the 1 millisecond transient spikes the CPU was requesting/getting and that was with an actual oscilloscope or having a very high end board that comes with a voltage monitor. luckily my apex encore comes with one.

How can you tell if you have it or don't? if you download or have hwinfo64, there is an option called "Vcore latch Max". if you see this option, then your board has a oscilloscope. if you do not see it. then you do not have one.

Behavior before microcode- any single threaded task would make the voltage monitor catch voltage anywhere from 1.56-1.59v.... it was extremely alarming especially after buildzoid did his tests and published his findings.

Behavior after microcode- after 2 hours of single threaded testing....i have a max of 1.481v

Proof

it really looks like intel has stopped the insane voltage requests/transient spikes.

this is great news for people who have coolers that will allow you to lift limits.

obviously i cannot speak for other brands as other board vendors do their own optimizations or changes.

thanks for reading. let me know your findings as well.

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