Tweaking my 14900KS + undervolt (Apex Encore)

[Yuvaletzi]

Hey guys first of all my rig is 

14900KS

Apex encore

8400MHz g skil RAM SK Hynix 

rtx 4080 

I want to undervolt my cpu from the bios With ASUS presets and not manual change anything so I tried svid behavior best case scenario then crashed on the finals and even got BSOD for the first time my LLC was lvl 5 then I tried to bump it to lvl 6 then it became much stable. Does this settings safe for my cpu? Btw sync ac/dc to loadline vrm is also enabled should it be keep like that? Before that svid was auto and LLC5 never crashed only temps was pretty ****** high it was like 70-85 now on best case scenario it’s 55-70  What about IA cep any benefits to leave it on? Or should I turn it off? And btw what is this maximus tweak settings mode/lvl 1 or 2? My current is auto 

one more thing my memory is CL40 should I try to do CL38? My cpu sp is 108 overall and mc sp 95

 

 

 

 

[Silent_Scone]

Hello @Yuvaletzi 

SVID Behaviour manipulates the AC Loadline. Best Case Scenario, as the name implies is for very good silicon samples that can handle the vastly reduced load voltage underneath the predefined V/F curve. 

Select Typical and then set VRM Loadline to L3 and retest.

[Yuvaletzi]

Thanks for the reply I tried typical with LLC5 and it was way higher temps if I’ll try typical scenario with LLC3 it will have less temps? And why it’s better then best case scenario with LLC lvl6 if I’m stable now?

as for maximums tweak you didn’t quite understand me you talked about xmp tweak (which I’m already using) there’s an option on my picture I shared maximus tweak level 1 or 2 or they called it mode , what should it do? As I looked it won’t change any timing setting 

as for the IA CEP I don’t understand how it should affect the performance while undervolt is it should be enable or disable for better temps and performance 

[Silent_Scone]

1. Disable CEP to avoid poor multi-threaded performance. 

2. If XMP Tweaked is already established - look to tune more memory subsets. Some brief hints and info can be found here (specific to a-die).

3. Tuning or manipulating Vcore / VFCurve is the more appropriate method than increasing VRM LL.

[Yuvaletzi]

1.As for IA CEP is it safe to disable it and get the extra performance like you said in multi threaded ? by the way it also improve gaming performance?

2.I looked at your post and I want first of all to know aboout this maximus tweak setting mode 1 or mode 2 or auto that's a different setting which I couldn't find it on your post I think you're confusing with XMP tweaked which I already use please look carefully I added another pic that describe it correctly what setting I meant for, there's two modes only mode 1 or mode 2, which one bring more performance? ASUS won't tell us =\

3. As for which lvl of LLC should I use you didn't quite get me my question was if I chose SVID Behavior Typical Scenario + LLC3 it will has less temperatures than SVID Behavior Best Case Scenario + LLC6? I tried LLC5 with best case and had crashes
for my understanding the more the LLC levels are high the higher Voltage levels on IDLE and less voltage on Load am I correct? or it's the opposite?
I really want to learn and understand so I can use this settings correctly. Hope you could more understand me now and again thanks for all your replies

Maximums Tweak setting

[Silent_Scone]

1. Not sure what you mean by "safe", or what you expect me to tell you. Best disabled when overclocking, which always comes with some risks when running out of spec. https://edc.intel.com/content/www/us/en/design/products/platforms/details/raptor-lake-s/13th-generat...

2. I'm not confusing anything, I linked you the post to give you some insight into which timings to look for initially if you want to extract more performance. Memory tuning is not something that can be condensed into a single article or one post. Tweak Mode 1 generally offers better module compatibility, with Mode 2 being more geared towards overclocking.

3. Less VRM loadline is always preferable where possible. Using more ACLL allows for more voltage droop at the CPU during transient load compared with simply trying to dial out the instability with higher VRM LL and negating Vdroop.

4. If dialling memory down further at 8400MT I'd recommend purchasing Karhu Ramtest to ensure stability between timing and voltage adjustment.

[Yuvaletzi]

I can't open the link you sent me for intel AZURE it wont let me sign in

so RN if I'm stable on best case scenario with LL5 it's ok?

I tried auto, typical and trained both had bad temps for me. typical is like number 2 but best case scenario is number one for overall temps 

what do you think about the settings SYNCH AC/DC LOADLINE with VRM LOADLINES which on DIGI+VRM should I keep it enabled? it was enabled for me by default with 0X12B microcode update.

as for IA CEP I meant with safe that it wont degrade my cpu and cause issues with it disabled, so should I disable it for better performance and temps?

As for maximus tweaks if I understood you correctly Mode 2 is for OK and I'm running 8400MHZ so its totally OC so should I try pick mode 2 instead of auto? with G.Skill SK HYNIX ram

[brettathorn]

Thanks Silent_Scone! That makes sense about Best Case being a bit aggressive. I'll try Typical with L3 and see how it goes. Any thoughts on IA CEP and Maximus Tweak settings?

Also curious about pushing my RAM to CL38, any suggestions there? I'm also looking into portable toilet solutions for an upcoming event. Any recommendations on reliable rental companies or best practices for setup and maintenance?

[Silent_Scone]

Assuming the memory OC is stable, sure. You can also attempt to use XMP Tweaked, this uses the tightest memory subsets as well as a few undisclosed tweaks for performance.

[Yuvaletzi]

Manged to get to 8600CL38 with it, timings 38-52-52-54-138 completed memtest86 for 6:10 hours PASS with 0 errors.

tCL tRCD tRCDW tRP tRAS 

tREFI 130K 

VDD1.47V

VDDQ1.47V

now running sfc/scannow and DISM just in case and ready to GO! 🙂