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RAM vdroop

SightUp1
Level 7

‎11-26-2017 01:53 PM - last edited on ‎03-05-2024 09:41 PM by Community Admin

If it matters, I have a z370-F with a 8700k.

In my BIOS I have my RAM voltage set to 1.35. For some reason it sets it to 1.3530 but that's another issue. But when it's set to 1.35 in the BIOS, upon restarting, it droops to 1.31-32. What should I do? Leave it alone? Should I set it to 1.37 So it actually shows 1.35 in the BIOS?
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morph_
Level 11

‎11-26-2017 04:26 PM

Are you having ram stability issue, posting or booting?

If your ram can run with less voltage than the specified that is a good thing, means everything is running more optimally and cooler!
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SightUp1
Level 7
In response to morph_

‎11-26-2017 04:30 PM

During loads mostly.
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morph_
Level 11

‎11-26-2017 06:32 PM

so no stability issues (Crashing/ bsod's etc)...?

Just voltage droop?
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JustinThyme
Level 13

‎12-01-2017 06:12 AM

SightUp1 wrote:
If it matters, I have a z370-F with a 8700k.

In my BIOS I have my RAM voltage set to 1.35. For some reason it sets it to 1.3530 but that's another issue. But when it's set to 1.35 in the BIOS, upon restarting, it droops to 1.31-32. What should I do? Leave it alone? Should I set it to 1.37 So it actually shows 1.35 in the BIOS?


Once you are booted into the OS whats it showing?
Are you having any stability issues?



“Two things are infinite: the universe and human stupidity, I'm not sure about the former” ~ Albert Einstein
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Silent_Scone
Super Moderator

‎12-01-2017 06:30 AM

Wouldn't concern yourself with this, at all. Software isn't going to tell you anything worth knowing. To know exactly what's happening you'd need to measure at the socket or on the DIMM itself. If the memory is stable, then that's all that is needed.
9800X3D / 6400 CAS 28 / ROG X870 Crosshair / TUF RTX 4090
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Praz
Level 13

‎12-01-2017 06:32 AM

Hello

RAM voltage VDROOP for the majority of usage can be considered non-existent for consumer class motherboards. The actual amount is so low that noise and other anomalies will mask the actual droop unless considerable effort is expended during the measurement process. If the problem being experienced is a difference of voltage between what is set and the actual value physical measurements are required as software is not an accurate indicator. When making the measurement ensure the equipment being used has the necessary resolution to accurately display the difference being seen. Also the proper connection of the probes are necessary to eliminate trace and plane impedance induced errors.
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