Dram Training Voltage....what is it

[ZoneDymo]

So yeah I do google around but I cant find much info that is useful.

To me its totally new, as are the million other voltage options I get presented now.

Anywho, I have a 3600mhz DDR4 @ 1.35v memory kit.
Loading XMP has my PC refusing to boot.

I can set the timings to what they should be on XMP but then im running it only at 2700mhz.

going any higher gives me issues (not booting or bluescreens).....orrr does it? I found out that If I set memory training voltage to 1.3volts, I can get away with 3000mhz.

A program confirms that I am running at 1.298 or so volts...but I left the actual Dram voltage at auto, changing that to for example 1.25volts again gives issues, changing that to match the 1.3volts is fine.

Soooo yeah, idk, what is Dram training voltage and how does it relate to normal Dram voltage

 

[Ferrum Master]

It is boot voltage during motherboard init phase, where the auto settings are SET for each specific platform. Setting it higher usually helps with booting up. After intit phase your desired voltage is set.

 

[kiriakost]

Loading XMP has my PC refusing to boot.

It was in my plan to use XMP, and got the finest DDR3.
Them I did load Bios defaults, the system booted with Jedec, then I did activate XMP, the system auto-adjust it self perfectly.

XMP = overclocking, therefore we do not tweak the CPU frequencies or voltages.

 

[The King]

Your system specs are outdated in your profile. Stating what motherboard + CPU and RAM kit you have can be useful in troubleshooting.

 

[ZoneDymo]

Your system specs are outdated in your profile. Stating what motherboard + CPU and RAM kit you have can be useful in troubleshooting.

Sorry,
Gigabyte Z690 AORUS ELITE DDR4
12600k
Crucial Ballistix BL2K8G36C16U4B 3600 MHz, DDR4, 16 GB (8 GB x2), CL16

It is boot voltage during motherboard init phase, where the auto settings are SET for each specific platform. Setting it higher usually helps with booting up. After intit phase your desired voltage is set.

Right, but then I guess "auto" for normal Dram voltage means....the same as training voltage?
Because when I leave that to auto and set the training voltage to 1.3, hardwareinfo tells me its running at 1.3volts (well 1.294v)

When I set the normal dram voltage to 1.25 and trainign to 1.3 it gives issues.

When I set normal dram voltage to 1.3 and training to 1.3 it seems stable.

I guess it does not really matter if this works for me, just match the training voltage with normal voltage and continue on from there.

 

[The King]

The RAM is on the boards QVL list. So it should work without issues. Are you running the latest BIOS?
Have you installed your RAM in the correct memory slots?

 

[looniam]

fwiw the XMP and what my board feeds it, is 1.35v

pretty sure its the about the same kit(?)

 

[mstenholm]

fwiw the XMP and what my board feeds it, is 1.35v
View attachment 242568
pretty sure its the about the same kit(?)
View attachment 242569

So Asus play it safe and actually feed around the 1.35V for your CPU/MB combination and that works fine. Gigabyte gambles and starts out at 1.30V and that doesn’t work. Forced 1.30V works. Well go with 1.30V or slightly higher if you experience problems. GB and RAM...well back in the old days (X58) at least the better boards played nice, now my limited (1 sample) experience says that you have to work a bit to make it work.

 

[Ferrum Master]

I guess "auto" for normal Dram voltage means....the same as training voltage?

Almost never. AUTO means way higher voltages to survive post and ensure less hassle for motherboard maker. AUTO usually means higher voltages than default/manufacturer recommendation.

 

[ThrashZone]

Hi,
Probably a bios bug
Training usually helps not only dimm voltage but also timings to help post.

DDR4 dimm voltage is a lot higher than ddr5 would need so I'm sure there are some bugs on the platform I have no experience with gigabyte bios only asus.

 

[ZoneDymo]

Hey all, I just wanted to say thank you, it has been resolved.

looking at @looniam image had me thinking about the slots I had the ram in (even though it is bewildering to me that that matters).
my ram sticks were in Slot 1 and 3, changing them to 2 and 4 and bam, booting with xmp profile on, no problem.

Thanks a lot all, that is one problem fixed!