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Discussion Starter #1
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.
 

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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 :D
 

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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?
 

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Discussion Starter #5
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.
 
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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 :D
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
 

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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.
strange
he's losing to my 3900x without overclock, without ram overclock, and without PBO enabled :D
 

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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
 

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Can anyone with an MSI board Confirm this? just to make sure.. i am hoping to get a bit of performance from the CPU .
would be nice to know if this helps all the x570s out i even been able to get my memory stable at 3533 before 3466 was my highest i could go so far im really happy with this bios and my asus board posts faster now hope its the safe for msi.
 

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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.
 

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

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can anyone post a small overclocking tutorial ?
 

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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.
 

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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?
 

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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 :D
Correct there must be a sub 7k Cine20 score thread somewhere....
 
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