Ryzen Voltage confused

tomcoleman

tomcoleman

tomcoleman

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11 Mar 2016
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ok details on my setup

Ryzen 3900X
Custom Water cooled loop (2 x 360mm rads)
Asus ROG Crosshair VIII Formula X570 Motherboard (ROG CROSSHAIR VIII FORMULA BIOS 1001)
G.SKILL Trident Z Neo (For AMD Ryzen) Series 16GB Model F4-3600C14D-16GTZN
I have installed the latest AMD chipset drivers and ini files for all devices

I basically a newbie when it comes to Ryzen this is my first AMD system. I had intel before which i just changed the multiplier to a value and it was kinda it for OC'ing.

My CPU temp at idle is sitting around 35-50c jumping around.

My R20 cinebench is around 6800 (-/+ 30)

Windows task manager shows my CPU to be in the range of 4.1-4.3Ghz

Voltages at idle are 1.45 on around 80% of all cores

I have attached some screenshots below i basically have no idea when it comes to Ryzen and im learning fast.

I have heard that Motherbaords basically have crap BIOS's and voltage needs to be hardset in the BIOS at around 1.3/1.35 max untill a fix is produced.

Ive watched a ton of videos on youtube around OC'ing ryzen but they all talk to fast or if you have previous nohow.

I guess the main questions are:

  1. is 1.4-1.5v normal and to be exepcted either at idle or boost?
  2. how the hell do you use Ryzen master
  3. what values if any should be an MUST in the BIOS to change
  4. what Ghz should i really expect










 
ok did some testing last night, seems that from the AMD blog post everything on my system is working "as expected"

AMD Source: https://community.amd.com/community...te-5-let-s-talk-clocks-voltages-and-destiny-2

Im seeing in Windows at least at idle voltages around 1.0-1.2v, under load 1.3-1.45v which as per the AMD offical report is to be expected.

What is intresting though is once i enter the BIOS the CPU voltage permently sits at 1.4v as per the screenshot below, i presume they havnt fixed the BIOS yet and only Windows is corrected (with their AMD power scheme and Ryzen master)

In my testing i was hitting around 6900-7000 on R20 Cinebench.

AMD reports that if you have system tray applications such as Steam, Corsair iCue this can effect the CPU voltages. This is infact true, with iCue & Steam running my CPU was sitting around 1.3v even though no cores are under load, when i exit stright away they drop to 1.0-1.2v.

I presume that something within these applications is making the CPU think it needs to ramp up voltage/workload.

In Ryzen master i also noticed my power profile and sleep function of the cores was working correclty, the CPU was shutting down or sending to sleep cores that was not in use when idle to save power - clever.

I guess now its just time to wait for BIOS to mature and software to be refined so iorn out these little issues.

Unfortunatly most of my system is steam/corsair icue and i leave it on 24/7 i dont really want the CPU sitting at 1.3v all day so i'll have to exit these when im not at home....

I enabled amd xmp docp for my Mememory which is G.SKILL Trident Z Neo (For AMD Ryzen) Series 16GB (2 x 8GB) 288-Pin RGB DDR4 SDRAM DDR4 3600 (PC4 28800) Desktop Memory Model F4-3600C14D-16GTZN after enabking this the system was stable 9/10 times, over a 3hr period the system locked up on me twice and then struggled to boot until i reset the D.O.C.P - strange.






 
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