Ryzen BCLK OC

[HRL]

Anyone dabbled with this?

Been very gingerly increasing the BCLK on my recent 2700X build and the results have been rather good.

Running a very conservative 101.5 and my 2700X now boosts to 4.5Ghz using XFR2. Far higher than I can get with a manual OC on all cores.

I’ve read that it can get a bit dicey using NVMe’s but so far so good.

 

[Ross Thomson]

check your voltage

 

[chroniclard]

Yeah had similar results but temperatures in stress test and voltage are fairly high to get it.

 

[HRL]

check your voltage

Mostly 1.3’s to 1.4’s, blipped at 1.5 when it peaked at 4.5Ghz but it seems to do that even at stock.

Is heat the bigger issue? If it stays cool enough it’s ok?

EDIT: Have been using a negative voltage offset.

 

[KungFuSpaghetti]

I tried 104 BCLK and -0.065 offset, but cinebench results were no better than just leaving everything on stock auto settings (it was actually worse) and it also ran a fair bit warmer, so I've left it alone since then. Everything in auto now on the BIOS and RAM at 3466 CL14 I get 1878 multicore and 180 single core on Cinebench.

 

[HRL]

I tried 104 BCLK and -0.065 offset, but cinebench results were no better than just leaving everything on stock auto settings (it was actually worse) and it also ran a fair bit warmer, so I've left it alone since then. Everything in auto now on the BIOS and RAM at 3466 CL14 I get 1878 multicore and 180 single core on Cinebench.

Forgot about this thread.

I kept tinkering with BCLK and ended up on 103.5 and VCORE on Auto. Using a negative offset no longer got higher clocks, leaving it on Auto gets me 4.5Ghz boost across all cores and about 4.2Ghz across all cores at 100%.

It’s the best of both worlds. Like an all core 4.2Ghz OC but with a 4.5Ghz boost. Happy with that and finally done fettling.

Thought I’d got my RAM stable at 3400 CL14 but turned out it never was. Ended up set as 3200 CL14 but running at 3310 CL14 due to BCLK.

 

[KungFuSpaghetti]

Like you I'm done messing, figure closest to stock is best. I'm running 0.565v offset with XFR enabled, ram at 3466 CL14 and with discord, steam, vmware horizon and all my peripheral software open I get 1815 multi in Cinebench 180 in single core.

Seems lower than a lot of people here but that's in a regular usage case without trying to optimise my O/S for a better score. 2 to 4 cores will hit 4.4 then drop to 4.35 the rest between 4.175 to 4.250 which I'm happy with. Civ 6 pegs all cores at 4.250 and flicks to 4.275 briefly at times. Temps never go above 70 on air with all maxed out for 6 hours plying Civ, so pretty happy even though I guess my chip is mediocre at best.

 

[HRL]

Silicone lottery.

Once I’d updated my mobo BIOS I was able to OC all cores to 4.3+ but it was a bit too toasty for me. Low 70’s but the fan would be working hard all of the time.

With the BCLK tweaking it peaks at 65ish and BFV only took it to 69, and BFV seems to hammer components TBF. Considered an AIO but from what I gather they’re barely any better than the Noctua I’m already using unless building a custom loop.

Time to start clearing my game backlog!