3900x PBO.

[Scottx125]

Ok just done some more testing. Seems like best I can get is 4075Mhz~4100Mhz with 1usmus power plan and settings and -0.0625 voltage offset (reduces max core peak from 4625Mhz to 4600Mhz but W/E). PBO on doesn't seem to do anything, Higher scale on XFR also doesn't really seem to do anything so probably X5 is best. Will come back and update to see if my better cooling solution yields any new results.

 

[andy_mk3]

I've been playing too. Can't get past 4516mhz SC or 4117mhz MC. Really frustrating really.

 

[kitfit1]

OK, i'm going to offer the following advice, but you will have to follow it to the letter.
If at any time in the past you have had or still have Ryzen Master installed, first thing is to uninstall it. Download the latest bios for the CH8 and save it to a usb stick making shure you re-name it as usual. Once Ryzen master is uninstalled, re-boot back to windows and make sure there are no leftover apps still installed from Ryzen Master, if there is, uninstall them re-boot and check again. Assuming all is clear and you already know all of your safe ram settings, re-start and boot to bios. Exit, load optomized defaults, save and exit.
Insert the usb stick in the BIOS FLASHBACK port and do a bios flashback.
Boot to the bios and input all your ram settings, voltage, SOC voltage, cLDO VDDG voltage, cLDO VDDP voltage and any other voltages that you had ram related.
save, exit back to bios.
This now the important bit, although so was getting shot of Ryzen Master.
Boot to bios/tweaker/Performance Enhancer and set Level 3 oveclock/ back to External Digi+Power/Cpu to LLC3/cpu current capability to 140% (yes it will be red, ignore it)
Now down to PBO/PBO limits to Manual/PPT limit to 0/TDC limit to 0/EDC limit to 1/ Precision boost clock overdrive to 200mhz/save and exit................back to bios and move to Advanced and drill your way down to XFR and accept it, than set the same settings as PBO...................boot back to windows. Now, tell me you are seeing the same result ?

 

[andy_mk3]

OK, i'm going to offer the following advice, but you will have to follow it to the letter.
If at any time in the past you have had or still have Ryzen Master installed, first thing is to uninstall it. Download the latest bios for the CH8 and save it to a usb stick making shure you re-name it as usual. Once Ryzen master is uninstalled, re-boot back to windows and make sure there are no leftover apps still installed from Ryzen Master, if there is, uninstall them re-boot and check again. Assuming all is clear and you already know all of your safe ram settings, re-start and boot to bios. Exit, load optomized defaults, save and exit.
Insert the usb stick in the BIOS FLASHBACK port and do a bios flashback.
Boot to the bios and input all your ram settings, voltage, SOC voltage, cLDO VDDG voltage, cLDO VDDP voltage and any other voltages that you had ram related.
save, exit back to bios.
This now the important bit, although so was getting shot of Ryzen Master.
Boot to bios/tweaker/Performance Enhancer and set Level 3 oveclock/ back to External Digi+Power/Cpu to LLC3/cpu current capability to 140% (yes it will be red, ignore it)
Now down to PBO/PBO limits to Manual/PPT limit to 0/TDC limit to 0/EDC limit to 1/ Precision boost clock overdrive to 200mhz/save and exit................back to bios and move to Advanced and drill your way down to XFR and accept it, than set the same settings as PBO...................boot back to windows. Now, tell me you are seeing the same result ?

Copied these settings as well as I could into my Gigabyte board. Had already removed Ryzen Master and updated the BIOS.

Rebooted and instantly hit 4,666.6Mhz! HOWEVER, it doesn't sustain that for any kind of work load. Single core R20 is average about 4.4Ghz with the occasional spike to 4.45Ghz. So while it does hit the boost, it's not doing anything significant.

 

[Shac]

Which unfortunately is the the way it is.

 

[andy_mk3]

Which unfortunately is the the way it is.

Which isn't amazing lol.

So my results in CB R20

PBO Working 4.6GHz+
SC: 526
MC: 7056

4.4GHz All-core Manual OC
SC: 508
MC: 7781

A minor loss of single threaded performance for huge multi-thread gains.

 

[Shac]

So the only question is does that minor losss for SC adversely affect any gaming (which i doubt) well unless you game at 720p.

 

[andy_mk3]

So the only question is does that minor losss for SC adversely affect any gaming (which i doubt) well unless you game at 720p.

I doubt it very much too. Most games I play are quite heavily threaded so would never really see single core boost gains.

 

[Grim5]

Which isn't amazing lol.

So my results in CB R20

PBO Working 4.6GHz+
SC: 526
MC: 7056

4.4GHz All-core Manual OC
SC: 508
MC: 7781

A minor loss of single threaded performance for huge multi-thread gains.

Same here

PBO (Boosts to 4.65ghz for one second)
SC: 517
MC: 9257

4.3ghz all core
SC: 502
MC: 10180

this is on a 3950x but it's the same behaviour as your 3900x

And I'm currently playing 3 games, all three of which are showing higher average and minimum fps with the 4.3ghz all core because they are able to load multiple cores.

I'm not playing any games that are locked to one or two cores, The only game I have installed that does that is csgo but I haven't played it in over a year

 

[Scottx125]

OK, i'm going to offer the following advice, but you will have to follow it to the letter.
If at any time in the past you have had or still have Ryzen Master installed, first thing is to uninstall it. Download the latest bios for the CH8 and save it to a usb stick making shure you re-name it as usual. Once Ryzen master is uninstalled, re-boot back to windows and make sure there are no leftover apps still installed from Ryzen Master, if there is, uninstall them re-boot and check again. Assuming all is clear and you already know all of your safe ram settings, re-start and boot to bios. Exit, load optomized defaults, save and exit.
Insert the usb stick in the BIOS FLASHBACK port and do a bios flashback.
Boot to the bios and input all your ram settings, voltage, SOC voltage, cLDO VDDG voltage, cLDO VDDP voltage and any other voltages that you had ram related.
save, exit back to bios.
This now the important bit, although so was getting shot of Ryzen Master.
Boot to bios/tweaker/Performance Enhancer and set Level 3 oveclock/ back to External Digi+Power/Cpu to LLC3/cpu current capability to 140% (yes it will be red, ignore it)
Now down to PBO/PBO limits to Manual/PPT limit to 0/TDC limit to 0/EDC limit to 1/ Precision boost clock overdrive to 200mhz/save and exit................back to bios and move to Advanced and drill your way down to XFR and accept it, than set the same settings as PBO...................boot back to windows. Now, tell me you are seeing the same result ?

This honestly made my performance worse. Went from 4075Mhz~4100Mhz to 3950Mhz.
And yeah to be honest I'm not impressed with XFR/PBO. I'm barely getting 7200 CBr20 yet with manual I can push 7800...

 

[Scottx125]

Same here

PBO (Boosts to 4.65ghz for one second)
SC: 517
MC: 9257

4.3ghz all core
SC: 502
MC: 10180

this is on a 3950x but it's the same behaviour as your 3900x

And I'm currently playing 3 games, all three of which are showing higher average and minimum fps with the 4.3ghz all core because they are able to load multiple cores.

I'm not playing any games that are locked to one or two cores, The only game I have installed that does that is csgo but I haven't played it in over a year

I agree. If you can hit at least 4.3Ghz all core at 1.3v or 1.325v. It's probably worth it. It'd be different if one core was running at 100% utilisation at 4.6Ghz. But they don't. They only run at 4.6Ghz if it's an extremely light load, which is kinda pointless. I'm gonna keep my current XFR on for the moment and see if it gets close to 4.2/4.3Ghz AC with my new fans I'm gonna add to my AIO.

 

[andy_mk3]

I agree. If you can hit at least 4.3Ghz all core at 1.3v or 1.325v. It's probably worth it. It'd be different if one core was running at 100% utilisation at 4.6Ghz. But they don't. They only run at 4.6Ghz if it's an extremely light load, which is kinda pointless. I'm gonna keep my current XFR on for the moment and see if it gets close to 4.2/4.3Ghz AC with my new fans I'm gonna add to my AIO.

I agree, however I don't think you will improve much with fans. I have a fairly well capable custom water loop with 2 360 rads, my temps are <70C but that doesn't allow it to boost any higher. Need to get the temps way down which you could only do with sub-ambient cooling.

Same here

PBO (Boosts to 4.65ghz for one second)
SC: 517
MC: 9257

4.3ghz all core
SC: 502
MC: 10180

this is on a 3950x but it's the same behaviour as your 3900x

And I'm currently playing 3 games, all three of which are showing higher average and minimum fps with the 4.3ghz all core because they are able to load multiple cores.

I'm not playing any games that are locked to one or two cores, The only game I have installed that does that is csgo but I haven't played it in over a year

Yeah very similar behaviour there. I honestly think the boost or PBO is inherently broken. It should not take this much hassle to get a CPU to boost to what it should do. An Intel CPU will boost up out the box.

 

[Panos]

OK, i'm going to offer the following advice, but you will have to follow it to the letter.
If at any time in the past you have had or still have Ryzen Master installed, first thing is to uninstall it. Download the latest bios for the CH8 and save it to a usb stick making shure you re-name it as usual. Once Ryzen master is uninstalled, re-boot back to windows and make sure there are no leftover apps still installed from Ryzen Master, if there is, uninstall them re-boot and check again. Assuming all is clear and you already know all of your safe ram settings, re-start and boot to bios. Exit, load optomized defaults, save and exit.
Insert the usb stick in the BIOS FLASHBACK port and do a bios flashback.
Boot to the bios and input all your ram settings, voltage, SOC voltage, cLDO VDDG voltage, cLDO VDDP voltage and any other voltages that you had ram related.
save, exit back to bios.
This now the important bit, although so was getting shot of Ryzen Master.
Boot to bios/tweaker/Performance Enhancer and set Level 3 oveclock/ back to External Digi+Power/Cpu to LLC3/cpu current capability to 140% (yes it will be red, ignore it)
Now down to PBO/PBO limits to Manual/PPT limit to 0/TDC limit to 0/EDC limit to 1/ Precision boost clock overdrive to 200mhz/save and exit................back to bios and move to Advanced and drill your way down to XFR and accept it, than set the same settings as PBO...................boot back to windows. Now, tell me you are seeing the same result ?

What he said, minus the settings I use on the XFR, PBO OFF and 1usmus powerplan.

I use that and with the D15, I get 4605-4625 constant when gaming on the highest loaded cores and 4400-4550 on the rest.

 

[Scottx125]

What he said, minus the settings I use on the XFR, PBO OFF and 1usmus powerplan.

I use that and with the D15, I get 4605-4625 constant when gaming on the highest loaded cores and 4400-4550 on the rest.

Tried your version of it and it made my performance worse. Did it with LLC auto and it went up to 7178 Cr20 score which is the best I've seen so far. But tests after that went down to just above 7k. So it's probably a thermal issue. I was around 70c doing the tests. Might flip my cooler tommoz and install 3 extra fans on it. See if it helps. If not, a cooler chip is a happy one .

 

[Panos]

Tried your version of it and it made my performance worse. Did it with LLC auto and it went up to 7178 Cr20 score which is the best I've seen so far. But tests after that went down to just above 7k. So it's probably a thermal issue. I was around 70c doing the tests. Might flip my cooler tommoz and install 3 extra fans on it. See if it helps. If not, a cooler chip is a happy one .

1usmus powerplan and settings is for light loads (gaming) not CB all core benchmarks mate.

Apples - oranges.....

 

[Shac]

I have the settings above dialed in and I have 2 cores hitting 4675, 2 at 4650 and 2 at 4625.
The second CCD all cores are between 4425 and 4475.

Under load Max voltage of course peaks at 1.5V but average is 1.35V

I can run F&H CPU and GPU all 12 cores with these same settings and yes it gets a bit toasty but does not exceed 82ºC at peak (Briefly) Normally floats between 74º & 78º.
I am content with that.

 

[Scottx125]

I have the settings above dialed in and I have 2 cores hitting 4675, 2 at 4650 and 2 at 4625.
The second CCD all cores are between 4425 and 4475.

Under load Max voltage of course peaks at 1.5V but average is 1.35V

I can run F&H CPU and GPU all 12 cores with these same settings and yes it gets a bit toasty but does not exceed 82ºC at peak (Briefly) Normally floats between 74º & 78º.
I am content with that.

I'm convinced XFR is temp limited like everything with the CPU. I've seen numerous reports of AMD lowering the MAX auto-overclock temps from 85 down to 80 to increase the lifespan of the CPU. When this is over if increased cooling doesn't improve my scores I'll be going back to my static OC with temps being the limit at load. Yes higher volts kill CPU's over time, but higher volts + high temps accelerates the issue tenfold. So long as I keep the CPU below 80 degrees as XFR does I recon I'm not degrading the life by any significant level. Ideally running all core max should be 75 degrees and then with saturation of the heat-sink rising to 80. I might be wrong on this point, but every CPU I've ever had hasn't failed when OC'd for years at a time, even on high voltage.

Interesting side note: Core offset by -0.0625 improves multicore speed under heavy load by 25-50Mhz. Yet full auto-core improves low loads by about the same on 1-3 threads. Medium loads on auto benefits from improved speed for short bursts but for long duration workloads loses that performance.

 

[Scottx125]

Ok, so got my new fans in and flipped my cooler. Temps are now down pretty much always below 70c with XFR on. With the same -0.0625 V offset my average speed increased by about 75Mhz from 4075Mhz to 4150Mhz. I've found that lowering the voltage offset more to 0.0831V allows me to peak all core heavy load at about 4175Mhz. Though with single core you don't see 4.6Ghz anymore, most you get is 4.55Ghz. Single core heavy loads are about 4.375Ghz. Again with all this going on temps are below 70c and around 65c-66c.

 

[Scottx125]

I have the settings above dialed in and I have 2 cores hitting 4675, 2 at 4650 and 2 at 4625.
The second CCD all cores are between 4425 and 4475.

Under load Max voltage of course peaks at 1.5V but average is 1.35V

I can run F&H CPU and GPU all 12 cores with these same settings and yes it gets a bit toasty but does not exceed 82ºC at peak (Briefly) Normally floats between 74º & 78º.
I am content with that.

How are your temps allowed to get so high? I've got plenty of thermal headroom but for some reason my CPU just doesn't want to have the extra juice? I mean it does on light loads, but under heavy load it just goes up to 66c and sits there...

 

[nutsnut]

Which isn't amazing lol.

So my results in CB R20

PBO Working 4.6GHz+
SC: 526
MC: 7056

4.4GHz All-core Manual OC
SC: 508
MC: 7781

A minor loss of single threaded performance for huge multi-thread gains.

or to put a different lens on it, a 3.4% decrease in single threaded which would be unoticible for a 10.2% increase in multi threaded.