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Discussion starter · #41 · (Edited)
Started fiddling with exploring going faster than 4795 1t/4690 16t and ran into the first sign of trouble, but also promise...

At 105.8 I ran into single core boost instability; it needs more voltage. This is where CO will help. Initially I bumped vcore offset 1 more notch, to 0.01875, but the same results, 3dmark 1t triggers a instant reboot, similar to how 5950x behaves with too much negative CO applied.

Backed vcore offset back down to to +0.0125 and working on minimal values of positive offset required for single core stability at 4813mhz 1t boost. 1.194 SVI2 is simply not enough at that speed on Zen 3.

Testing higher now and things are acting up more, will require more involvement to get stable without resorting to just shoving vcore offset at the problem. 107.4 up and running....

Now beating stock 5800x and many OC results I've seen of mediocre PBO only 5800x OCs... we're not done yet, not by a long shot :p

It has stopped flatlining all core boost at max multiplier, a sign PB2 is starting to run into some challenges with the power budget of 142/95/140. ////Now entering "you'll likely damage the CPU if you do this on AIR/AIO/Ambient water" territory.////

valid.x86.fr

AMD Ryzen 7 5800X3D @ 4778.69 MHz - CPU-Z VALIDATOR

[fc8ph3] Validated Dump by OLDROG (2022-04-17 22:45:28) - MB: Asus ROG CROSSHAIR VI EXTREME - RAM: 32768 MB
valid.x86.fr valid.x86.fr
 

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Discussion starter · #42 ·
107.4 Results so far, as I mentioned earlier, AIDA 64 isn't the X3D's forte, but these numbers are a big improvement from stock:
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#43 ·
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Discussion starter · #44 ·
Think my frame of reference is skewed for AIDA from my 5950 lol, was shocked to see latency as high as it is at first on X3D, but the CPU speed is probably a big hindrance in that test.
 
#45 ·
Would you mind trying y-crunsher?
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Discussion starter · #46 · (Edited)
I just published on Hwbot ;) Bloated windows 10, almost default install so efficiency is garbage but there they are.

I'll eventually get around to throwing high effort scores up, but not until people start posting ones that beat mine. Still carefully exploring behavior as there are some peculiarities involved vs X series SKUs.

Ultimate personal goal is 45.5x110 stable for 5005 mhz 1t in daily config. Not sure I'll get there without some rather extreme measures but I'm going to try.
 
#47 ·
AMD is supposedly working on it.

www.hardwaretimes.com

AMD Reportedly Working to Enable Overclocking on the Ryzen 7 5800X3D | Hardware Times

AMD’s Ryzen 7 5800X3D is one of the first CPUs from the company to launch with a locked multiplier, preventing proper overclocking. As usual, enthusiasts have found ways to push the chip beyond its marketed boost clock of 4. (classicsofttrim.com) 5GHz. By completely ignoring the multiplier and...
www.hardwaretimes.com www.hardwaretimes.com
 
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Discussion starter · #48 ·
CO, they're going to officially add CO. What else they add is entirely anyone's guess, but don't hold your breath for PBO or multipliers over 45.5. I would expect them to unlock multipliers below though, ala non-k Intel CPUs.

I suspect the delay is moving CO outside the PBO menu or ensuring PBO options besides CO are disabled.

As it is, PBO "can" be enabled through trickery, but boosting is disabled so they've done shenanigans in the Microcode we can't see/access, trickery or not.

PS: All these cute cpuz 5000+ are gilding only at least so far. I have zero confidence they can actually run a heavy load unless on LN2, even then, somewhat unlikely, but not impossible for the brave to do it.
 
#49 ·
Lol, ...preventing "proper" overclocking...
 
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#50 ·
tcclaviger said:
CO, they're going to officially add CO. What else they add is entirely anyone's guess, but don't hold your breath for PBO or multipliers over 45.5. I would expect them to unlock multipliers below though, ala non-k Intel CPUs.

I suspect the delay is moving CO outside the PBO menu or ensuring PBO options besides CO are disabled.

As it is, PBO "can" be enabled through trickery, but boosting is disabled so they've done shenanigans in the Microcode we can't see/access, trickery or not.

PS: All these cute cpuz 5000+ are gilding only at least so far. I have zero confidence they can actually run a heavy load unless on LN2, even then, somewhat unlikely, but not impossible for the brave to do it.
Click to expand...
What's the trick to enabling PBO? Is this something that I could enable on an Asus B550-F?
(In your first post you mention PBO2 tuner works, so I assumed that was just through the bios).
Thanks in advance for the info.
 
Discussion starter · #52 ·
PJVol said:
Lol, ...preventing "proper" overclocking...
Click to expand...
Indeed. If only they had have left multis under 45.5 open, and allowed DOCS to function daily setups with very high single and reasonable but safe all
core performance could've been very easily obtained without breaching 1.3. shame.

blu3dragon said:
What's the trick to enabling PBO? Is this something that I could enable on an Asus B550-F?
(In your first post you mention PBO2 tuner works, so I assumed that was just through the bios).
Thanks in advance for the info.
Click to expand...
No, sadly it won't enable functionality that doesn't exist in a bios already. PBO2 Tuner is software, linked on first page.

AVATARAT said:
Does someone try what happens if boot with older BIOS (AGESA)?
Click to expand...
Will be doing so sometime after the 21st.
 
#53 ·
Enabling CO would belp, especially for those with poor cooling even though it may not work good below -10 acvording to one owner.
 
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#55 ·
I hope the fTMP bug gets fixed first, tbh
 
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Discussion starter · #56 · (Edited)
Taraquin said:
Enabling CO would belp, especially for those with poor cooling even though it may not work good below -10 acvording to one owner.
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That is me, -10 or greater at stock BCLK was trigger boost malfunction, however, on hot systems that won't happen as they wont peg 44.5 solidly in the same way so it'll have a wider range of usefulness.

OCmember said:
I hope the fTMP bug gets fixed first, tbh
Click to expand...
Yeah, it's an issue. I just disable TPM, set bios to use discrete so it doesn't even look at fTPM, and stay on Win10. Tried 11, wasn't impressed with performance regression so swapped back.

kaosstar said:
Are there any cheap, as in <=$200, B550 or x570 motherboards with external clock generators?
Click to expand...
None I am aware of. MB shopping for me involves 2 steps: 1 - Look at Asus product stack, 2 - Buy the board that has the feature set I want.


-----
3080ti seated, cobbled together loop assembled for 3 days of testing before the Crosshair 8 Extreme arrives and I do a full rebuild on both PCs, functional but ugly lol.

3080ti doesn't tolerate BCLK over 102.2 so far, not bothered to try and improve this until on C8E.

Scores going up today, it's...pretty good and more than expected 2080ti vs 3080ti scaling in some cases, will update 1st post. Initial low effort 3dmark scores are ranging from top 3 to top 5 compared to 5800x + 3080ti leaderboard at 102.2 bclk. I'm using daily clocks and the gigabyte vbios at this point, there's a good bit of headroom left for 3dmark scores.
 
#58 ·
Any owners care to test ram tuning vs stock? tcclaviger? Going from Zen2 to Zen3 I noticed that tuning ram didn`t matter that much (Zen2 often gave me up to 30% going from 3200cl16 xmp to 3800cl15 tuned B-die, Zen3 seldom gave more than 20%, probably due to larger L3 cache improving memory related performance). Any of you care to teest for instance SOTTR 1080lowest and see what CPU game avg you get stock vs tuned? My bet would be that you probably won`t get more than 10%, but I could be wrong.
 
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#59 ·
It's a pretty amazing cpu, the best @1080, given into account the low power consume and the good all-round performance for non-pro users. It has some edge at 1440 in some games but in the long run a cpu like the 5900x will be better suited for gaming @1440+ given the many cores. Games are going to use more and more cores and if someone like myself already play at 3440*1440 the next step is 4k.. And there you won't see any difference but core scaling if any.

Anyway, a great cpu to squeeze till the last the am4 platform, let's say anyone on a x370/470 or b450 with a 1st/2nd gen ryzen processor whose primary focus is gaming.
 
#60 ·
urielejh said:
in the long run a cpu like the 5900x will be better suited for gaming @1440+ given the many cores. Games are going to use more and more cores
Click to expand...
Games have aspects that aren't easy to parallelize and there are hugely diminishing returns after a certain point. There is also the fact that a large portion of games are cross platform where eight-cores are expected and negligible effort is made to parallelize them further.

By the time a 5900X is significantly faster than a 5800X, let alone 5800X3D, in more than a tiny portion of CPU limited games, Zen 3 will be several generations old and quite long in the tooth. I'm not going to be using my 5800X3D in a front line system anywhere near that long.

urielejh said:
And there you won't see any difference but core scaling if any.
Click to expand...
That depends on the game. I typically play at 1440p or 4k, and I have games where my 5800X cannot push enough frames to make my GPU the limiting factor. It's true that these are poorly optimized and unusually serial titles, but I cannot rewrite them, so the only way to get more performance out of them is to brute force things with faster CPUs and memory subsystems.
 
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