R5 3600 + PBO need opinion on my settings

[Ruru]

Your completely wrong, i did the test and get better score in cinebench single core with pbo vs manual oc at same frequency. Plz spread your bullshit somewhere else

From my experience with 3600 and 5800X, yeah, using PBO is almost always a wiser choice what it comes to single/low thread performance. My 5800X goes up to 5GHz which it won't go with manual OC.

 

[photonboy]

CPU usage tells you NOTHING useful (unless it's at or near 100%).
Generally speaking, when a game is bottlenecked because of the CPU it's because one of the cores is running a single, game code thread as fast as it can but just can't keep up. Even if you see in Task Manager there is no single core at "100%" that is still the case because the code for a single software thread can JUMP between cores. In TM you see the average.

Long story short, the only way to know if the CPU is the bottleneck and by how much is to monitor the GPU usage which tends to be fairly accurate because for raster you essentially parralelize the processing so the GPU is (sort of) like a single core so "50% usage" can mean you could double the FPS if other bottlenecks are removed. Assuming no FPS cap (VSYNC or manual) then you just use the method I described above.

So GPU Usage of "70%" as you say above suggests that you COULD get up to around 100/70 or 43% higher FPS if the new CPU is 43% or higher processing PER CORE.

There's a bit more to it, but this is a pretty accurate overview.

The R7-5800X3D would help a lot in some games with the 1% averages due to the way games use cache. So even if you saw a solid 60FPS (i.e. with VSYNC) it might feel somehow stuttery or laggy as that "60FPS" is a reported value but some of those frames actually aren't displayed. Anyway, the average FPS value as you may know is only one factor. Very, very different depending on the game. (also your six cores would be struggling in some games but that's harder to quantify)

 

[Raiju]

Hello,
I happen to have a overclocked r7 3700x with PBO that clocks up to 4,5Ghz on 2-core workloads.
As I first thought, increasing max frequency of PBO doesn't necessarily helps if your CPU has not very good ASIC quality. (silicon quality)
Think of it as a curve, the less max MHZ you ask, the more likely it will get enough voltage to attain that frequency.

To summarize, when i set +200, my CPU will only boost to 4,475Ghz, which is only 75Mhz above the factory boost max frequency.
But if I set +100 or +125 then I'll get my 4,5Ghz.
Some CPUs (while being same SKU) might boost to higher frequency with less voltage depending on ASIC quality.
Do note that the CPU won't go in PBO clocks if the die temperature is higher than 70°c (though this value may vary depending on motherboard vendor)

I noticed scalar multiplier changed the boost duration behaviour quite a lot so I keep it on x10.
Also, to reliably check the max frequency I use HWinfo64, keeping it open in background for hours when needed.
So if you put +200Mhz in bios, you should see 4,4Ghz there. If you're not getting this, try +150 then +125.

Spoiler: hwinfo

As for non-PBO settings, I found -0,06875v vCore offset voltage to be the sweetspot with PBO, I crash with any lower voltage on heavy multithreaded tasks after 20-30 minutes.
vSoc:1,15v
VDDG IO-Die:1.030v
VDDG CC-Die:1,040v (this helped me with stability)

Overclocking memory with Infinity fabric can also a bring substantial performance uplift.
I hope it helps!

 

[photonboy]

I run my CPU (R9-3900x) up to 83degC when doing heavy workloads like video transcoding. There's not much real-world advantage to keep the temps low. But you can keep the FAN NOISE really low if you keep the temps at a higher range. My fans spin between 350RPM for light use and 700RPM for heavy use. I don't even go above 350RPM until I hit 60degC on the CPU. CPU's care less about thermals (below a certain point) and more about a consistent voltage/thermal load. And CPU's that aren't heavily overclocked rarely fail anyway.

So again, I'd personally concentrate on keeping fan noise LOW.

You can keep messing around with the current CPU settings but I'd personally just keep it stable and call it a day. You're talking about gains of maybe 2% max if you're lucky by "optimizing" even further at the expense of less stability.

Again, if the CPU cores are hitting roughly 4.25GHz then getting to 4.3GHz is 1.2%. Hardly matters if your GPU is sitting at 70% which means you need a CPU that's faster by 43% per core (ish) to make full use of the GPU. 43% is 100/70.

Ya, you can mess with Infinity Fabric yada yada but we're still talking about very small gains relative to any real-world benefit you'd get. I prefer to get things STABLE and QUIET then leave things alone.

 

[bat33]

Hello,
I happen to have a overclocked r7 3700x with PBO that clocks up to 4,5Ghz on 2-core workloads.
As I first thought, increasing max frequency of PBO doesn't necessarily helps if your CPU has not very good ASIC quality. (silicon quality)
Think of it as a curve, the less max MHZ you ask, the more likely it will get enough voltage to attain that frequency.

To summarize, when i set +200, my CPU will only boost to 4,475Ghz, which is only 75Mhz above the factory boost max frequency.
But if I set +100 or +125 then I'll get my 4,5Ghz.
Some CPUs (while being same SKU) might boost to higher frequency with less voltage depending on ASIC quality.
Do note that the CPU won't go in PBO clocks if the die temperature is higher than 70°c (though this value may vary depending on motherboard vendor)

I noticed scalar multiplier changed the boost duration behaviour quite a lot so I keep it on x10.
Also, to reliably check the max frequency I use HWinfo64, keeping it open in background for hours when needed.
So if you put +200Mhz in bios, you should see 4,4Ghz there. If you're not getting this, try +150 then +125.

Spoiler: hwinfo

View attachment 320389

As for non-PBO settings, I found -0,06875v vCore offset voltage to be the sweetspot with PBO, I crash with any lower voltage on heavy multithreaded tasks after 20-30 minutes.
vSoc:1,15v
VDDG IO-Die:1.030v
VDDG CC-Die:1,040v (this helped me with stability)

Overclocking memory with Infinity fabric can also a bring substantial performance uplift.
I hope it helps!

actually running pbo with a negative offset of 0.15v rock stable so far, with a 280mm aio , set scalar to X5, max i can get is 4250mhz, i dont think ive been lucky on the silicon lottery,
max i can do manual OC is 4.2ghz, anything higher never stable even with 1.4v.

max FCLK 1800mhz, 1900mhz give crackling sound in windows

tried reduce boost to +100mhz but still 4250mhz is the max, temp is like 50°c max, no luck.

 

[freeagent]

Boost override works on those old dogs?

Neat..

 

[Raiju]

I think all thats left to do is fine tuning some settings here and there.
Maybe you could try bumping the CPU Load Line Calibration to Medium, a 65w part won't need a lot, it will help you keep sustained clocks for longer. (I'd advise to stay away from highest level of LLC though)

After modifying some settings, you should run some benchmark to make sure you don't lose performance whatever you do.
A stock ryzen 3600 should do ~9000pts in cinebench R23 and ~3800pts in R20.

In my experience, ryzen 3000 boost best when above 1,25v during loads. (motherboard sensor, not VID)
1800 FCLK isn't that bad also with timings as tight as you set, but memory OC takes a long time to fine-tune.
The 5800x3D is the best CPU for AM4 but I wouldn't risk OC it with your motherboard, it might get real hot.
Godspeed

 

[bat33]

I think all thats left to do is fine tuning some settings here and there.
Maybe you could try bumping the CPU Load Line Calibration to Medium, a 65w part won't need a lot, it will help you keep sustained clocks for longer. (I'd advise to stay away from highest level of LLC though)

After modifying some settings, you should run some benchmark to make sure you don't lose performance whatever you do.
A stock ryzen 3600 should do ~9000pts in cinebench R23 and ~3800pts in R20.

In my experience, ryzen 3000 boost best when above 1,25v during loads. (motherboard sensor, not VID)
1800 FCLK isn't that bad also with timings as tight as you set, but memory OC takes a long time to fine-tune.
The 5800x3D is the best CPU for AM4 but I wouldn't risk OC it with your motherboard, it might get real hot.
Godspeed

it might be ok, the motherboard is a 6 phase, vrm shouldnt run hot also have the CPU AIO rad top of the case as exhaust just above motherboard VRM

 

[DooM3]

don't forget the good old manual overclocking

 

[bat33]

don't forget the good old manual overclocking

pbo give better result in my case, was only able to get 4.2ghz stable on manual OC, with pbo some core can boost to 4.25ghz, also by using manual oc you bypass the pbo algorythm which protect your cpu even more on heavy load, i dont think its good to get a fixed vcore on heavy cpu load, pbo work that way to protect your CPU, also the prefered core feature is a real plus, my perf are better with pbo than manual OC