Zen 2 Owners Thread!

i_am_jon · 16 Jul 2019 at 14:18

Sin_Chase said:
Well, this is the best I have achieved so far without going deeper into memory Timings and Sub Timings. Despite feeding volts the current Ryzen RAM Calculators are not entirely appropriate for Zen 2 and x570 as far as I can see. I have some pretty loose timings and the HWInfo DRAM Voltage of 1.464 is actually ~1.42 on the multi-meter.

These settings see acceptable load CPU Voltages and the systems properly idles with the Ryzen Balanced power plan.

The CPU Vcore offset of -0.10v is the sweet spot for me. -0.50, -0.75, -1.25 and -1.50 all lose performance for me.

CB R20

Multi CPU Score of 7416

All Core Freq. of 4125Mhz peak

1.43v CPU Vcore in Ryzen Master

1.34v CPU Vcore in CPU-Z

1.35 CPU Vcore in HWINFO

Single CPU Score of 506

Single Core Freq. of 4353Mhz peak

1.35v CPU Vcore in Ryzen Master

1.33v CPU Vcore in CPU-Z

1.33 CPU Vcore in HWINFO

CPU/Motherboard
Auros X570 Master, f5g
3900X Stock 38x100Mhz
CPU Vcore Normal with -0.10v offset
Vcore SOC 1.125v (Manual)
CPU LLC High
PWM Phase Control eXm Perf

Some great testing there, shame it's still only seeing 4.353Ghz on single core boost. Only a slight single core gain over 4.3Ghz all core which is easily achievable on the same power settings with similar temps. I'm still thinking a agesa update might help us 3900x owners see PBO hit 4.6Ghz, seems the 3700x is having less trouble hitting it's 4.4Ghz boost target.

Had my 3900x up to 4.35Ghz all core, LLC:Turbo @ 1.325v last night but was hitting 80+ degrees in AIDA stress test. Hotter than I'd like for 24/7 so went back to 4.3Ghz & LLC:High @ 1.325v. Will try tweaking it up 4.325Ghz tonight and see how that runs.

On CB R20 ram speed / timings do seem to make quite a difference as well as CPU clock. My last R20 single core run at 4.3Ghz 3667C16 was 503pts.

Oblivion007 · 16 Jul 2019 at 14:25

beany_bot said:
Well I just pulled the trigger on a 3900x.

I didn't realise OCUK starting taking AMEX. when did that happen?

What made you settle on the 3900x over the 3800x and the 3700x? Just curious as I think we were in the same boat and I still can't decide.

Also, what RAM did you go for?

jay13bry · 16 Jul 2019 at 14:28

jay13bry said:
I've gone from

4790k @4.8ghz
16gb DDR3 Hyper X 2133
MSI Z97S Krait Sli

To

3600X
B450 MSI Gaming Pro Carbon
16 GB G skill Rgb 3466mhz C16

Will build shortly.

Also swapped my 1700 in my cad rig for a 2700X on ebay I got for £180. Not bad.

Well sadly I'm still having issues on the latest bios. Can't seem to get above 4.2ghz even on a single core test.

Anyone having any more luck with the 3600X than I am? Debating just returning it as not to spec and buying a 3600.

Sin_Chase · 16 Jul 2019 at 14:39

jay13bry said:
Well sadly I'm still having issues on the latest bios. Can't seem to get above 4.2ghz even on a single core test.

Anyone having any more luck with the 3600X than I am? Debating just returning it as not to spec and buying a 3600.

Make sure PBO is set to Auto or disabled.

If that doesn't help try running a memory speed less than 3600 if you are not already doing so.

DragonQ · 16 Jul 2019 at 14:50

Sin_Chase said:
The CPU Vcore offset of -0.10v is the sweet spot for me. -0.50, -0.75, -1.25 and -1.50 all lose performance for me.

Presumably you mean -0.01 V is the sweet spot and -0.05 to -0.15 V all lose performance? -1.50 V would put you at negative voltage.

Sin_Chase · 16 Jul 2019 at 14:54

Yeah... Should read:

-0.05
-0.075
-0.125
-0.150

willhub · 16 Jul 2019 at 15:04

What is the vcore offset for and where can I find it on a B350f

Are you also using the offset with PBO on?

Sin_Chase · 16 Jul 2019 at 15:13

willhub said:
What is the vcore offset for and where can I find it on a B350f

Are you also using the offset with PBO on?

Posted on the previous page about using an offset. I don't know if your board has it but I would presume so.

Yes, I am using PBO....not that it's worth much. My full BIOS configuration is a few pages/posts back.

Orange Nexus · 16 Jul 2019 at 15:21

willhub said:
What is the vcore offset for and where can I find it on a B350f

Are you also using the offset with PBO on?

It is under AI Tweaker>VDDCR CPU Offset Mode Sign>(-)>VDDCR CPU Offset Voltage

Try to be conservative. Start with say -.01 and so on. Pic is just an example.

https://imgur.com/YuPxwvm

Boomstick777 · 16 Jul 2019 at 15:28

Nghtmare · 16 Jul 2019 at 15:33

Is anyone else having that you set the latency to 15 for example and it stays on 16? They all change to 15 except the main one that says CAS Latency. I change on the BIOS and it doesnt change. Im hsing X570 Taichi

Aretak · 16 Jul 2019 at 15:38

Nghtmare said:
Is anyone else having that you set the latency to 15 for example and it stays on 16? They all change to 15 except the main one that says CAS Latency. I change on the BIOS and it doesnt change. Im hsing X570 Taichi

Do you have Gear Down Mode enabled? That will only allow you to set even numbers for the timings.

DragonQ · 16 Jul 2019 at 15:39

Nghtmare said:
Is anyone else having that you set the latency to 15 for example and it stays on 16? They all change to 15 except the main one that says CAS Latency. I change on the BIOS and it doesnt change. Im hsing X570 Taichi

Disable Gear Down Mode if you want to use odd latencies.

beany_bot · 16 Jul 2019 at 15:51

Oblivion007 said:
What made you settle on the 3900x over the 3800x and the 3700x? Just curious as I think we were in the same boat and I still can't decide.

Also, what RAM did you go for?

Good question. I just wanted "the best" in the end. Sold something decent on eBay today and thought **** it. Im buying the 3900x. The Tom’s hardware review of the 3800x convinced me that the 3800x wasn’t going to be faster than the 3900x in games. And I thought I am maybe buying a bit of future proofing.
Also just the fact I “wanted” a Ryzen 9. Just combination of all those things. None of which make and sensible sense (for a gamer). But there it is.

I got 8Pack 4000mhz 16gb ram a while back when it was cheap(er).

Nghtmare · 16 Jul 2019 at 15:52

DragonQ said:
Disable Gear Down Mode if you want to use odd latencies.

I just did, I didnt know that was a thing. I guess there are things to learn coming from Intel.

Lolik · 16 Jul 2019 at 15:54

Boomstick777 said:

so old that got real uv in mine

Boomstick777 · 16 Jul 2019 at 15:57

Lolik said:
so old that got real uv in mine

xD

Nghtmare · 16 Jul 2019 at 16:01

So far all Ive done:

RAM 3600mhz CL15 15 15 35
LLC to 1 which is the highest one
-100 mv offset

I havent turned on PBO or Auto OC yet. Cores hitting 4.475mhz and VCore goes up to 1.394V. Temps seem to go up to 72.4C during C20

burtie · 16 Jul 2019 at 16:13

I've set my PBO to off as my temps on my 3700x where 50c idle now my chip runs at 3.6mhz no boost. I'm going to RMA mine and go back to 2700X on X470 board.

Dunno if OCUK will take the chip back though.

Captain · 16 Jul 2019 at 16:40

loonyk said:
Oh yes it is

Thank you.

I have it arriving on Friday.