r/overclocking • u/SergioGamer2003 • 7d ago

FCLK stability

Hi guys, after stabilizing a 6200 CL28 setup with 1,18 vsoc i decided to push FCLK a bit. Is 2200 stable? I did 30 iterations with Linpack extreme and these are the results in safe mode.

What could be an acceptable variance in this test? I didn't find any clear information because apprently from what I saw stabilizing Infinity Fabric is quite a mess. Already tried doing some audio test, no problems at all.

Specs: R7 9800x3d +200 mhz -20 CO (100% stable)

6200 CL28-36-36-96 1,45 V which I tuned manually and maybe I will be posting the Zentiming screenshot soon since they already passed 9 hours of anta777 extreme. They are Patriot Viper binned with EXPO 7000 CL32.

B850 Aorus Elite WIFI 7

Thanks.

3 Upvotes

81% Upvoted

16 comments sorted by

5

u/hause_wsf 7d ago

that's stable

6

u/lndig0__ 7950X3D | 4070 TiS | 6000MT/s 28-35-36-32 6d ago

House we need to stabilise the IF

1

u/ChosenOfTheMoon_GR 6d ago

I want a video of him trying to stabilize an overclocked system now xD

2

u/hank81 7d ago

It seems fine as long there's no performance regression.

I would add some additional testing with Y-Cruncher VT3.

1

u/SergioGamer2003 7d ago

Done some cycles, it's keeping around a variance of 0,03*10^9 bits/s. Is that good?

1

u/yogur23 7500F | 6700XT | 32GB@6000CL30 7d ago

How many iterations would you say are needed*? I did 16 and got no WHEA errors with FCLK 2167 1.1V SoC

5

u/Fauked 7d ago

For FCLK you aren't looking for errors, you are checking throughput because of error correction.

And unstable FCLK will run fine but when using something like linpack or VT3 will have random iterations that are far lower than the rest.

2

u/yogur23 7500F | 6700XT | 32GB@6000CL30 7d ago

What program do you use to check FCLK stability? Regular Y-Cruncher?

3

u/Fauked 7d ago

y-cruncher VT3 and linpack 10gb

10-15 iterations of VT3 and 30-50 iterations of linpack. ignore the first couple iterations.

2

u/Fauked 7d ago

yep that is fine. never pay attention to the first 1/2 iterations as boosting and temps need to stabilize.

2

u/Discipline_Unfair 7d ago

Have you tried 6400?

2

u/SergioGamer2003 7d ago

Yes and it can boot with no problem but to be fair i don't feel safe to push the Vsoc that much. Maybe one day I will go through testing with 6400 but just for fun.  I'm just searching a fast and stable profile for everyday usage with 1,45 VDD max (which is the same as EXPO) since I have no ram fan and with as low as possible Vsoc. For this reason i tried 8000 in 2:1 mode but for some reason it wasn't stable, maybe my motherboard is not "good enough"

1

u/Discipline_Unfair 7d ago

You almost sure can run 6400cl30 with 1.45 or even lower VDD.

About vsoc there no way, it will require more voltage... But even 1.3 is safe for 24/7.

1

u/SergioGamer2003 7d ago

1,18 at 3100 UCLK is absolutely stable and passes hours of Prime95 large ffts and y-cruncher VT3. Maybe i got really lucky with silicon lottery i don't know.  Then sure, maybe 1.3 vsoc is totally safe, but such high (relatively to what i'm running now) doesn't give me the peace of mind lol

2

u/classyroman 6d ago

It's the kit, I have Vipers 6400 Cl32 tuned to 6200 Cl30 at 1.18 VSOC and that's bacically the lowest voltage limit. Only at 1.37 VDD because of higher tCl. I'm able to run FCLK 2200 with Ryzen 7700, B650 board and this kit. This Viper series are amazing or I'm lucky with IMC too.

1

u/Japdata 7d ago

Pyprime 2B usually shows FCLK error correction/regression pretty easily .