I’ve been preaching this for a few weeks now. Glad to see someone is taking note. They’re focused on the wrong number though. The current limit matters much more than the power limit, and it's really not Intel's issue. It's the motherboard manufacturers that have set the current limits at 500A. There's really no reason to undervolt or underclock your CPU. You just need to enable the stock limits, and raise them up from stock bit by bit as you tune an overclock or over current tune.
I've helped quite a few people with this issue after experiencing it myself. Most(maybe all) motherboards do not adhere to the proper power limit and current limits as specified in the data sheet from Intel. The issue usually presents as program crashes or game crashes, or "Out of memory" errors.
You will find this official datasheet from Intel makes clear all of the limits that need to be enforced:
On Page 98, table 17, row 3, you will find the 13900k CPU. "8P+16E Core 125W". This table shows clearly the stock turbo power limits in watts.
More importantly, on page 184, table 77, row 6, you will find the maximum current limit for the 13900k CPU. In my experience, exceeding this limit often leads to instability, or even chip degredation if combined with high power draw.
The stock power limits you should apply in BIOS are
PL1 (Long Term Turbo Power Limit) - 125
PL2 (Short Term Turbo Power Limit) - 253
ICC(CPU Core/Cache Current Limit) - 307
There's also an "extreme config" with both power limits at 253.
These settings can also be adjusted using the Intel Extreme Tuning Utility if you want to do it while in OS.
Going even further than this, there is also a mention of a 320W extreme config for a CPU with a 150W base TDP. Which in my opinion refers to the upcoming 14900KS. But any good binned 14900k can run in that configuration just fine also.
Here are a few posts of people who implemented these fixes for reference:
power_off
2024-2-24 02:10:22
I can verify that I was having the same issues with my 14900k and this method of setting default power limits fixed my problem.
Current wattage
CPU clocked to 5.7 ghz on 14900k motherboard Asus Z790 Hero
ICC(CPU Core/Cache Current Limit) - 307
PL1 (Long Term Turbo Power Limit) - 253
PL2 (Short Term Turbo Power Limit) - 253
Since I'm running default wattage settings in the motherboard. My CPU boost anywhere from 5.3ghz to 5.7 ghz depending on the game I am playing.
To me it's not much of a hit to performance and I rather have the piece of mind gaming with zero crashes.
Acadia know what they are talking about and at first I was scared to try anything. But I did a little reading adjusted my settings and now I can game in peace with no issues.
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