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This I really want to know.BCLK clock adjustment on B350 is very interesting indeed. Does anyone with the Tomahawk have any actual success with BCLK OC?
I think a lot of people have been posting results with low voltage at 4.0 running cinebench and calling it stable. I think realistically 3.9 at around 1.4 is more likely. Especially when you look at silicon lottery results where they have the same.Interesting, on IBT, I have used it in the past, but it always passed on my Intel that I setup with P95. I did notice that it gets the temps 1-2 degrees hotter though!
I will test my ryzen tonight with it, just to make sure of stability.
FYI, I'm @ 3.9 1.42-1.48V anything less is not prime stable.
I have put close to 1.6V into this thing but no luck getting 4.0 stable.....
Realbench stress test at max ram for at least 1 hour. I'd also give intel burn test at maximum settings a go to, this found my instabilities where others failed. (10 runs of IBT should take around 90mins)ok so I've got it at 4ghz and 1.37 volts
so what tests do I need to run ? just to make sure she's ok ?
I think you guys are on to something here. I've dropped my core down a little and the jump downward in volts is big. 3.9 needed 1.36v to be stable, 3.85 is 1.30v. 50mhz for all that voltage, will I notice the 50mhz - no sir. What I've found, we the chip is on the edge, Cinebench produces a lower score than you'd expect - eg 3.9 was 10 points higher than 3.8.
BCLK clock adjustment on B350 is very interesting indeed. Does anyone with the Tomahawk have any actual success with BCLK OC?
I tested it ibn mine. Max value I was allowed to enter was 103 anything more could not be entered. System was fine for normal day to day use (email, watching video, web browsing) but crashed quite quickly when using handbrake. Haven't had a chance to do any further testing yet however.
I would suggest that there is internal throttling going on, or error control is occuring where it identifies errors corrects it and that impacts performance. So, either throttling is not shown, or errors are occuring.
I don't have Ryzen yet, but on my overclocked 7850K, in order for the chip to not throttle on the limit, I had to manually edit the P-states to stop it dropping the multipliers. I really hate the internal protection system, that they make it awkward to get around.
Thanks to the comments on here about IBT, I had my 3.9Ghz OC RealBench stable for 4hrs at +7500 offset, IBT failed in about 1 minute... pushed up load line calibration from level 5 to level 3 and its now stable with IBT.
Seems IBT is a much quicker way of finding instability!
I tried quite a bit for 3.95Ghz, a mere 50mhz extra but the voltage jump was getting silly and still wasn't stable. In the end I stopped at 1.437v (under load), compared with 1.381v under load for 3.9Ghz.
BTW what exactly does load line calibration do, other than control vdroop? Is there any reason not to just set it to level 1 where I get absolutely zero vdroop? Looking at HWiNFO my VRM temps are not exceeding 51*C under full load.
got my load line calibration set at lvl 1 ... if your pushing it set it high
You are correct 5 would be the highest.Level 5 is the highest LLC setting isn't it? I seen one chart that showed it backward. If I put mine on level 1, it does almost nothing.