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Nonstop problems with stability on 14900KF, Apex Encore, and Trident Z5 8200 kit

BuzKillington
Level 7

I have been going in circles for months with this setup, trying to get even XMP to work whatsoever, and having the CPU maintain stability. This is my current Up to this point, I learned about PL1 and PL2 and have it set to 350w. I do an overclock "by usage", 60,60,58,58,58,57,57,57. I set V/F points slightly over on points 8,9,10, 11 (+.01,+.01,+.02+.02). I had to increase IMC to 1.40v and IVR to 1.36, and changed VDD/Q to 1.42. All of this accounted to DDR5 being stable at XMP I at 7600. 7800 is kindof stable, anything over 8000 doesn't work. I run Cinebench R23 and get roughly 41,000, 340-350w, 95C. I've tried setting the VDD/Q higher, played with IMC and IVR voltages. Nothing seems to work. I've been stuck at this point for some time.

I also have the Thermalright Contact Plate, and the screws are not tight whatsoever. I've taken it apart once to check. I use TG Kryonaut Extreme and a Corsair H170i AIO.

At this point, I really just want my DDR5 to run at XMP I or II speeds (8200) and have my CPU perform the best it can within my thermal limits. SP score is 97.

Any help whatsoever is much appreciated! Thanks guys! 

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5 REPLIES 5

Silent_Scone
Super Moderator

Hi @BuzKillington 

Which memory kit?

You can try my profile, but voltage preference depends on the CPU (more so at these speeds), and not all CPU samples will do 8200MT unconditionally.

This profile is used with GSKILL F5-8000J4048F24GX2-TZ5RK (8000MT 2x24GB).

 

 

9800X3D / 6400 CAS 28 / ROG X870 Crosshair / TUF RTX 4090

I'm using the G.Skill Trident Z5 8200 (2x24GB) kit (F5-8200J4052F24GX2-TZ5RK). At this point, I am willing to try about anything. My current settings are with XMP I enabled, speed turned down to 7600. VDD/Q at 1.42v, IVR/TX at 1.36v, IMC at 1.4v.

Thanks so much!

No problem. It may help it may not depending on where the instability on your side is coming from. The sub-timings have been manually tuned, some more for stability.

9800X3D / 6400 CAS 28 / ROG X870 Crosshair / TUF RTX 4090

BuzKillington
Level 7

I will give it a try when I get home tonight. Thanks for your time! 

On the CPU side, I messed with the SVID behavior settings last night. I get errors in Cinebench R23 if I use Typical or Trained, so Auto it is. Just trying to get my temps and power usage down, while maintaining clock speeds. I feel like I'm reaching the limit of what my chip can do. I'm running about 350w during Cinebench R23 with temps around 95C. I use the By Core Usage parameter, and I have 60,60,58,58,58,57,57,57. PL1 and PL2 are at 360w. Default V/F points 1 thru 7, and points 8,9,10, and 11....are only sightly turned up by .01v and .02v. I use the Corsair H170i with TG Kryonaut Extreme. Do you think I'm reaching my CPU's limits?

At that package draw, those temps are expected. SVID behaviour adjusts the AC Loadline parameters. If you're overclocking per core the CPU is probably more comfortable at the auto values. A lower AC loadline will reduce the voltage the CPU receives underload.

9800X3D / 6400 CAS 28 / ROG X870 Crosshair / TUF RTX 4090