Tweaking in new 3800x and X570-e strix

[Jesse221]

Ok so learned a little more about this system after watching gamer nexus and hardware unbox etc etc.  it seems OCing the ryzen 3000 series is little to no gain so I’ll leave PBO or PBO +200 off, or I’ll enable it and just not expect much since it doesn’t seem to harm the system either (from what I’ve found the safety limits are still there which is confusing because then why not just make that default since it’s still safe from what I’ve seen/read).  It does seem the memory tweaking is where most of the gains are, so I’ve downloaded taiphoon burst and dram calc but taiphoon says my Gskill memory is Hynix with d die.  In dram calc there is no Hynix d die so what should I be using?  Also when I set the DOCP is gives the notice that infinity fabric is best at 1:1 so that would be 1800 in my case, but I’m led to believe auto will automatically set the ratio to 1:1 based on you ram speed?  Is this not correct and I actually need to manually set it?

 

mobo is asus x570-e strix

amd r7 3800x

 

and this Gskill memory I spent the extra 10.00 for the faster timing version

 

https://www.newegg.com/g-skill-32gb-288-pin-ddr4-sdram/p/N82E16820232861

 

systems running great but just making sure it’s at its best without going into the danger zone on stress.

 

[Jurrunio]

There's Hynix C die (CFR or CJR) profiles though right? D die is supposed to be better than C die in timings and scale better with voltage.

 

6 minutes ago, Jesse221 said:

infinity fabric is best at 1:1

No, that ratio is related to UCLK, not FCLK. FCLK (infinity fabric clock) is a separate parameter which you should still set to half the memory data rate, but you could change it in much smaller steps and get like 1866MHz

[Jesse221]

Ok so Hynix c would be close?  Which of the c’s is considered better (closest to d)?

 

so what does fclk default to if set to auto?  Would it just be half of the slowest ram for ryzen? Can you check what your fclk is running at (I didn’t see anything in bios for its current rated speed but I’ll check again tonight), Confusing.

 

looks Like I need to check what my FCLK is and then see what timing dram calc gives for a c die, I’m think the DOCP 16,19,19,39 is already pretty fast isn’t it?

 

also Asus on the crosshair mobo mentions they can run lower voltage with same ram speeds and better timings (they specifically used the Gskill as an example and should stock voltage at 1.30 and they could run 1.2) With some kind of tuning tool.  I believe the Strix x570 has this too but I don’t see any tuning tool in bios.  Anyone familiar with what I’m talking about?

[Otto_iii]

honestly if you aren't running Samsung B-Die and a few select other types then DRAM Calculator is underwhelming, in which case its just manual adjustment, alot of trial and error.  

Also, i'd contest manual OC with CPU isn't worth it, PBO and AutoOC can be kinda crap but if 6-10% performance increase in multi-threaded applications under sustained load is appealing then its worthwhile to attempt a manual OC with static voltage at about 1.325v, its quick and easy if you start by finding stable clocks in Ryzen Master while utilizing a few stability benchmarks 

[Jesse221]

27 minutes ago, Otto_iii said:

honestly if you aren't running Samsung B-Die and a few select other types then DRAM Calculator is underwhelming, in which case its just manual adjustment, alot of trial and error.  

Also, i'd contest manual OC with CPU isn't worth it, PBO and AutoOC can be kinda crap but if 6-10% performance increase in multi-threaded applications under sustained load is appealing then its worthwhile to attempt a manual OC with static voltage at about 1.325v, its quick and easy if you start by finding stable clocks in Ryzen Master while utilizing a few stability benchmarks 

Well I used Asus own OC tool (posted a thread about it previously) and their auto tool for a “safe” OC set me to 1.34v and 4350mhz and that got me the highest scores in test but then I was confused by the locked voltage (I guess that’s just how AMD does it when manually OC’d) and also locked the clock at 4350.  Users commented 1.34 is too high to daily use and I also didn’t like the fact the voltage and clock are locked (seems like a waste when idle or low load etc).  So coming from an OC i7 4790k where I could leave voltage adaptive and clock adaptive with just a higher allowed boost clock made more sense to me so I left the new r7 3800x on auto where it works more familiar to me and more comfortable with it (now goes from 3900-4400 and volts fluctuated somewhere just below 1 and up to 1.45 (maybe 47).

 

now reading (or at least the threat I could find) seems that’s normal character for amd OC unless using PBO OC then it keeps the adaptive voltage and clocks so I may give that a go but gamer nexus basically found no improvement so might just be a waste of time.

 

so I guess my last bit of confusion is fclk.  Can you test what your fclk is currently at or what it defaults to in auto?

[Otto_iii]

If temps are fine i wouldn't worry about 1.34v tbh, but if it bugs you you could downclock it slightly, say 4250-4325 or something and try 1.325.  Alternatively part of the reason i like Ryzen master is i can just save the profile and only use it when gaming, leave it on auto when its just idling, or doing light stuff like surfing web.  For me atleast default ends up using like 1.35-1.36v under actual load but does so at 200-300mhz lower clock speed, with newer games especially ones running DX12 ends up running hotter but also slower then manual OC, so manual OC has a time and place imo. 

I would only worry about manual OC at 1.325v-1.35v if a program like HWMonitor indicates the cores are for some reason spiking to more then 1.5v while turboing up, but this only happens on certain motherboards/bioses when running a OC, usually lower end ones.  I had this issue with OC applied via bios but workaround is applying OC in Ryzen Master and leaving it minimized but open in backround, somehow that locks down voltages for me given i don't have best BIOS for OC on this board (b450m pro4) 

FLCK should be automatically set to half your rated memory speed, its probably already setup up as such, almost always is automatically.  You can check it in Ryzen Master i fyou want. 



 

 

[Jesse221]

38 minutes ago, Otto_iii said:

If temps are fine i wouldn't worry about 1.34v tbh, but if it bugs you you could downclock it slightly, say 4250-4325 or something and try 1.325.  Alternatively part of the reason i like Ryzen master is i can just save the profile and only use it when gaming, leave it on auto when its just idling, or doing light stuff like surfing web.  For me atleast default ends up using like 1.35-1.36v under actual load but does so at 200-300mhz lower clock speed, with newer games especially ones running DX12 ends up running hotter but also slower then manual OC, so manual OC has a time and place imo. 

I would only worry about manual OC at 1.325v-1.35v if a program like HWMonitor indicates the cores are for some reason spiking to more then 1.5v while turboing up, but this only happens on certain motherboards/bioses when running a OC, usually lower end ones.  I had this issue with OC applied via bios but workaround is applying OC in Ryzen Master and leaving it minimized but open in backround, somehow that locks down voltages for me given i don't have best BIOS for OC on this board (b450m pro4) 

FLCK should be automatically set to half your rated memory speed, its probably already setup up as such, almost always is automatically.  You can check it in Ryzen Master i fyou want. 



 

 

Yea I just found that info.  Seems it will auto set it to half up to 3600 (which is what I have) so I’ll only need to manually set it if I decide to try running 3800/1900 OC but I think right now I’m good where it is.  BF 5 and new COD are probably the most demanding games

i have and it runs those incredibly smooth

[Otto_iii]

Cool