what are you using to overclock individual CCXs

 

Crosshair Hero VII in last two beta bioses received CCX OC option in bios and I'm using that.

 

5.3GHz across all cores stable @ 1.325v full load @ LLC6 1.415 set in bios, 32GB 4x8 Bdie @ 4133 CL17 ......on lots of water cooling...

oops, wrong thread

 

so a 20 thread intel at 5.3ghz still loses to a 3900x at 4.3ghz on 24 threads i would really thought the ground would been made up with the 1ghz more clock speed per core.

So here's mine:
Cooler: custom loop ek strike cpu block
Batch: not sure
Voltage: 1.25-1.30 depending on load under 65c in everything but prime95.
Infnity fabric max stable frequency: not sure 1800 was stable

cb20 muti = 7752
CCX OC in bios:
CCX1 - 4400MHz
CCX2 - 4400MHz
CCX3 - 4300MHz
CCX4 - 4300MHz

 

I've searched and couldn't find a thread for 3900x owners to post JUST 3900x results. There is a one for 3950X and since 3900X is more popular why not to have a one too. So, here I start this thread and will post my results. Please, all users of 3900x's and future binned version - 3900XT post up your screens of OC's, cooler that you have used to do that and a batch number if you know(it is placed on ryzen's IHS).

So here's mine:
Cooler: Noctua D15, up to 75 *C in blender rendering in well ventilated case with many fans.
Batch: 2003 SUT
Voltage: 1.281V on LL3 dropping to 1.25V(SVI2 TFN) under full avx load
Infnity fabric max stable frequency: 1866MHz

CCX OC in bios:
CCX1 - 4450MHz
CCX2 - 4450MHz
CCX3 - 4250MHz
CCX4 - 4250MHz

aida ram latency 66.2 ns

Regarding batch number:
UA 2003 SUT
UA [YY][WW] [1][2][3]

YY -> Year
WW -> Week

1 -> ATMP Location ([P]enang, Malaysia or uzhou, China)
2 -> Last letters of ATMP location.
3 -> Wafer Production (aratoga or [T]exas)

Those from 2010 batch and newer tend to overclock better and on lower voltages since manufacturing proces matured from their debut.

What is the FIT voltage of your chip?

 

any one else tried the modded/beta bios for asus x570s 2203 i am able to run prime95 at same vcore that 1409 would insta bsod very promising bios so far or other boards running the new agesa aka ComboAM4v2.
https://www.hardwareluxx.de/communi...ommunity/threads/ultimative-am4-uefi-bios-agesa-Übersicht-22-06-20.1228903/#2.7

 

Can anyone with an MSI board Confirm this? just to make sure.. i am hoping to get a bit of performance from the CPU .

 

Hey guys im new to this I currently have the meg ACE MSI x570 board was wondering if you guys could help me get the hang of this overclocking.. any quick guides that can get me to 4.3 on a CCX? or am I mising something.. im used to this Intel stuff from sandybridge ivybridge days.. any tips would help or exact tips for that matter

 

So, I've a question regarding the FIT voltage of the chip. Wouldn't you only want to ensure your chip consumes less than FIT under a full load such as prime95 when overclocking? For example, if my chip has the VCore set to 1.25V, but when Prime95 fires up it drops to 1.125V and the FIT is 1.15V, wouldn't that be considered to be "under" FIT and not likely to degrade the chip?

My apologies, I'm still new to overclocking Zen 2.

 

Good info, my 3900x arrives today I'm excited to see what I can push on it.

 

Didn't have much time last night to mess with it but I got to 4.3ghz on 1.25v stable, however ram isn't running at it's proper speed need to mess with that later.
Got around 7405/7415 on Cine R20 with the ram at 2133mhz. Hoping getting the ram to 3200mhz and FCLK to 1800mhz to pump it up to where it should be hopefully around 7600.

4.4 at 1.35v all core wouldn't work, might try it at 1.4v but don't want to run it too high on voltage. Also this chip is INCREDIBLY cool even at 1.25v full load. Never touching above 60C in gaming so far in VR.

Going from a i7 4770k to a R9 3900x removed my bottlenecks in VR which is great, haven't tested other games like Arma or DCS yet.

 

can anyone post a small overclocking tutorial ?

 

https://community.amd.com/thread/244684


Should be more than enough to get you started. Goodluck,

 

Hey all, I don't have a 3900XT, but I thought I would drop the voltage scaling results of my 3950X for comparison so you can compare bins.


To do this test I set the all the CCX's to 3.0ghz, then raised the clock speed of just a single CXX (Via Ryzen Master) and recorded the voltage that CCX required in order to pass 10 passes of IBT Linpack set on high. Set IBT to use 8 threads and constrain IBT to only run the CCX you are testing (via task manager for Process Lasso).

The Spreadsheet it attached.

 

I found these to videos and found the Jayz 2 cents not to be as good as I would have wanted and the other ... its meh .. what are you running currently?

 

has anyone experienced this problem? https://community.amd.com/thread/244682

 

Just throwing my hat in the ring on this one, but I've changed cooling solution since this; was H110i AIO before, but now a 3 x 360mm rad custom loop, so I need to test again at some point.

My 3900x is about 6 weeks old now and does 4.3GHz @ 1.181v (1.275v set in BIOS, auto LLC brings it down to 1.181v during P95 Small FFT) which was the FIT voltage with the H110i; not really had time to play since I got the custom loop set up, so I suspect the FIT voltage will go up slightly due to lower temps.

Also does 1800 FCLK with vSOC at 1v, not tried higher yet. This again has auto LLC, 1.025v set in BIOS, droops to 1.006v "idle" and 1.0v during heavy RAM loads like TM5.

Currently running stock with CB20 score 7302 - I use the PC for work, so not much chance to play with it recently.

Will update as I do

 

My first time with an AMD CPU in YEARS, but I love the 3900X. I have mine set to all core 43.25 @ 1.264v with 1900 FCLK using GSkill memory. It's stable as I've been using it for the last week and a half now. I was planning to get the 3900XT, but some work related expense arose. :O

 

Hi, did you change the LLC in your bios to achieve this? If so, what settings? Thanks

 

OK, quick update.

1900 FCLK works fine...and at 1v SOC :stun::bigeyedsm

1933 didn't boot even at 1.1v SOC and I couldn't be bothered to tweak VDDG etc

Still, 1v SOC at 1900 seems a bit...bizarre?

I've put ram up to 3800 and running TM5 now...

 

Update...

Had some time to play today and even tho TM5 passed and RealBench passed 1hr, I got a single WHEA error, but a slight bump to 1.019v SOC fixed that.

Overall I'm quite happy, going on posts on here and around the net that vSOC is quite low for a stable 1900 FCLK.

 

System:

Define S, 3 x nf a14 front intake, 1 stock fan rear exhaust. Front panel and filter removed.
Cooler nh d15
Mobo crosshair 6 hero (bios 7803)
3900x

In prime95 at 4,3ghz, 1,275v, 160w (core+soc power) hits 93-94ºC at max fan speed and 25ºC ambient temperature, which would make about 70ºC delta. Is that normal? Isnt that too much? Ik ryzen 3000 thermal density is high, but im seeing GN temps with 198w on 3950x (same exact internal layout like 3900x) sitting at 55ºC delta on a test bench, which is probably worst compared to the "wind tunnel" i have here.

 

Here's mine. I haven't had an AMD system since the K6-2 days, so tweaking this one was a lot of fun. Getting the last additional 50 MHz on two of the CCX'es increased voltage and temperature (+5 C) maybe a little too much. I'm still comfortable with this setup but may take those two back down a notch.

MB: ASRock Steel Legend X570
Cooler: Noctua NH-D15 (two fans)
Case: Corsair Carbide 275R TG Airflow (three fans)

CPU: 3900X
Batch: 1951SUT
CCX's: 4450 / 4450 / 4300 / 4350
RAM: G.Skill Ripjaws V 3600 CL16
Infinity fabric: 1800
AIDA latency: 69.8 ns

Ambient temp: 25 C
Temp idle: 35 C
Temp typical gaming: 60-65 C
Temp full AVX load: 85 C
Voltage full load: 1.312 (VID 1.35, LLC 1)

Scores: (median score of 11 runs)
Cinebench 20: 7852 (min: 7832, max: 7905)
Geekbench 5: 13754 (min: 13672, 13815) (median single core: 1349) (https://browser.geekbench.com/v5/cpu/2933569)
Geekbench 4: 52364 (min: 52129, max: 52510) (median single core: 6095) (https://browser.geekbench.com/v4/cpu/15630128)

 

Here's mine. I haven't had an AMD system since the K6-2 days, so tweaking this one was a lot of fun. Getting the last additional 50 MHz on two of the CCX'es increased voltage and temperature (+5 C) maybe a little too much. I'm still comfortable with this setup but may take those two back down a notch.

MB: ASRock Steel Legend X570
Cooler: Noctua NH-D15 (two fans)
Case: Corsair Carbide 275R TG Airflow (three fans)

CPU: 3900X
Batch: 1951SUT
CCX's: 4450 / 4450 / 4300 / 4350
RAM: G.Skill Ripjaws V 3600 CL16
Infinity fabric: 1800
AIDA latency: 69.8 ns

Ambient temp: 25 C
Temp idle: 35 C
Temp typical gaming: 60-65 C
Temp full AVX load: 85 C
Voltage full load: 1.312 (VID 1.35, LLC 1)

Scores:
Cinebench 20: 7904
Geekbench 5: 1338 / 13793 (https://browser.geekbench.com/v5/cpu/2855589)
Geekbench 4: 6095 / 52510 (https://browser.geekbench.com/v4/cpu/15623737)

oh my gosh Your Cinebench 20 score is out of this world , you got excellent chip, what setting you have in Bios to achieved this excellent score on your 3900X , the best I can get is 7826

 

Is this any good?

 

Please provide more info on setup, ram timings, EDC/TDC/PPT values during run and temperatures too if you don't mind. Vcore and LLC would be great too!

I have a good 3900x and 6580/53750 is where it tops out.

I'm currently torn between a 3900xt and 3950x, the 3900x is going wife's PC so I have room for a new baby, which will go to her at Zen 3 release and the 3900x will go to eBay lol.

In theory they should have the same clocking potential, but, I dunno, I suspect the XT will do better.

 

Voltage is way too high. You need to get it down close to 1.2V or you will kill your chip.

 

Hi all,

Finally upgraded from my old I7 3820 @4.5mhz to the new R9 3900x along with a Asus ROG X570-F Gaming, 32Gb Corsair 3600mhz (C18), Corsair H115i Platinum AIO, 1Tb Corsair MP600 m.2. I'm still using my old Asus STRIX GTX 1070 Ti which is fine for now. I'm very happy with the performance improvement as you can imagine! From reading many forums out there, the CPU stock voltage appears to be a topic of concern.

For my Asus X570-F (Bios 2407 July 2020) my stock voltage was something like 4.2v and base temp from Bios at 40+ degrees C. I have played around with it for 2 weeks now and have a stable all core OC of 4.3mhz @ 1.3v. DIGI + VRM set to VDDCR Level 2 @ 110% and VDDCR SOC Level 3 @ 120%. PBO is disabled and DOCP set to 3600 as per my RAM spec. I have not touched the timings. Everything else set to auto.

Within the OS, my temps are at 40 degrees C on idle and jump to 74 Degrees C on full load on Cinebench R20 with a score of 7499 and single core 496. I did try 4.4mhz leaving everything else the same and again stable with temp of 78. I've kept it at 4.3mhz for now.

From everyone's experience with the 3900x does this sound safe? I've read so many forums with an array of settings for a stable 4.3 OC. Some keep CPU voltage at auto and use a negative offset of -0.1v but as the stock voltage for my MOB was set too high, I kept set voltage to 3v.

I had fun with the initial build due to micro stuttering on everything but found doing a fresh install again but disabling MS driver update (Not MS software update) and downloading drivers / chipset direct from ASUS and AMD done the trick. Though initially I had a faulty component but all okay thankfully!

Any recommendations / assistance on recommendations on voltage for 4.3ghz would me much appreciated.

 

I remembered wrong, 6567 max single on 3900x, so there is some uplift on 3900xt, nice.

https://browser.geekbench.com/v4/cpu/15616885

@roco_smith There's no chance that R20 score was done using the same settings as the GB scores linked. None. GB look like PB2 or PBO boosting, R20 is definitely all core OC.

 

@roco_smith There's no chance that R20 score was done using the same settings as the GB scores linked. None. GB look like PB2 or PBO boosting, R20 is definitely all core OC.

I assure you that's not the case at all. All the results are with the CCX settings mentioned. However, I've done a few more rounds of CB20 and the CB20 result in my post was definitely an outlier. A median score would be 50-60 points lower. I'll update the post when I have more representative results.

 

A consistent 8000 points remains my white whale for my 3900XT, I have hit 8001 once among 20+ runs, most runs turn back a result ~7940. Pretty sure a clean install would do it, but I am not quite ready to go that far.

3900XT (4.525/4.4)
Voltage: 1.331 (1.29 w/ LLC 3)
Temp: 83c
IF/RAM: 1900 1:1
SOC: 1.1
MSI X570 Unify
NZXT X62

Either way, extremely happy w/ the chip! When gaming I run 4.5/4.4, when leaving her on overnight to fold I run 4.0 @ 1.23v due to the 2080 Super dumping so much heat into the case.

CB20: ~7940
GB5: 1383/13819 (https://browser.geekbench.com/v5/cpu/2915997)
Aida Latency: 64.1

 

Nice!

3900X (4.5/4.4)
Voltage: 1.41 (1.37 w/ LLC 2)
Temp: 77c
IF/RAM: 1900 1:1
SOC: 1.1
C7H
Custom Loop (Optimus Foundation Block)

Most definitely not daily settings haha. Binning definitely shows in that voltage you can attain those clocks with, and this a fairly good 3900x, can do 4575-4575-4425-4400 at 1.4 GET.

This run put a slight load through the CPU 205 PPT, 121 TDC, forgot what EDC was, but it was a large number.

Seems the XT might be able to actually run these speeds or near it with daily voltages, nomnomnom. Also makes static OC make a lot more sense on the XT than on the X where daily voltages (1.262 GET) is only 4350-4350-4275-4325.

 

stupid interface doubled

 

Picked up a 3900xt yesterday. Haven't sorted mem yet but going ok.