Weird SVID Behaviour in New Z790 BIOS

[swale]

I've just updated my TUF Gaming Plus WiFi Z790 board with i7-13700K CPU with BIOS 1663.

I like to set a thermal limit of 85C since I have a Noctua fan for air cooling. The previous BIOS gave me a Cinebench score of  28526 (91.2% of max CPU score due to thermal throttling). The best I can do so far with the new BIOS is a Cinebench score about 1000 points lower of 27482. My current sweet spot settings for the new BIOS are:

Max CPU temperature - 85C

Power limits - 253 / 253W

SVID Behaviour - Intel Fail Safe

Asus Multicore - Disabled Enforce all limits

Adaptive undervolt -0.075V

The above settings give the Cinebench score of 27482, VCore 1.314V, Power 221W when running Cinebench.

I noted something very weird with the SVID behaviour setting. If I set this to Typical or Auto which I used in the previous BIOS (which gave a better score) then in the new BIOS the Cinebench score plummets to c. 14000 and the CPU only reaches 76C without any throttling. What's going on here? A bug in the BIOS perhaps?

[swale]

Update on the issue that setting SVID behaviour to anything other than Intel Fail Safe drastically reduces the Cinebench score (i7-13700K on TUF Gaming Plus WiFi Z790 with latest BIOS 1663).

Disabling IA CEP using SVID behaviour = Typical restored the Cinebench performance for me. The score is now 29,417 which is only 5% short of the maximum CPU score and good considering my 85C thermal limit. VCORE running Cinebench was 1.314V drawing 228W power. Idle temperatures and power is fine.

However, is it safe to keep IA CEP disabled for longevity of the CPU?

My BIOS settings are now these:

Max CPU temperature = 85 C

Long term power limit = 253 W (Intel Performance spec)

Short term power limit = 253 W (Intel Performance spec)

SVID behaviour = Typical

IA CEP = Disabled

Asus Multicore Environment = Disabled enforce all limits

CPU Core / Cache max current = Auto

Global Core SVID CPU Voltage Offset = -0.075 V (adaptive)

Intel Dynamic Tuning = Disabled (setting only works for 14th gen)

Intel GNA = Enable

XMP memory = XMP1

Aura LED = Off

Fast Boot = Disabled

OS Type = Windows UEFI Mode

Post Delay = Time 4s

Armoury Crate = Disabled

Resize Bar = Disabled

Coil Whine Mitigation

Enhanced C State = Disabled

Acoustic Mitigation = Enabled

Disable Fast PKG C State ramp for IA domain = TRUE

Slow slew rate for IA domain = Fast/4

Disable Fast PKG C Sate Ramp for GT Domain = TRUE

Slow Slew Rate for GT Domain = Fast/4

[swale]

Asus now advise me - 

We have checked back with the motherboard technicians on what the recommendation and their recommendation if you want to run your system in Longer Term they recommend using  Intel's recommended settings which are SVID Behaviour = Intel Fail Safe and IA CEP = Enabled.

My settings in the above post give a VCORE running Cinebench of 1.314V drawing 228W power. Idle temperatures and power are fine. Am I really risking my CPU with my BIOS settings?

[Silent_Scone]

Hi @swale 
I think it's fair that service representatives would stick to those guidelines. It's one of those "if you need to ask" scenarios, and it really depends on what exactly you'd asked them and how you asked it.

Running anything out of specification has its inherent risks like any overclocking does, regardless of the situation with current Intel CPUs or any other platform. Think it's simply a case of advising users to stick to defaults or you're at the mercy of the unknown depending on what the user is changing.

Your settings seem fine, as does the current draw.