Question Ram issue regarding voltage.

[MasacruAlex]

My motherboard is a b760m aorus elite ax running along an i5 3600k and 32gb ram 6000mhz DDR 5 Corsair Vengence. (Micron), the ram is placed in the 2nd and 4th slot (A2/b2?)
The problem is when I first installed this PC I recall setting the XMP to the 1st and only profile that it shows which made them run at 6000 mhz, now I'm not sure whether I've applied it or not because recently I realized it's on default, 4800mhz. I did some bios updates since then. It will boot LOOP if I set the XMP profile, but what I have noticed is, if I do set it on as soon as it reboots, a second or two passes then the PC shuts down and opens back up staying in a boot loop.
I've tried to figure the cause and I think it has to do with the voltage. I went to DDR5 voltage control in bios and I tried to increase the voltage to 1.15 (since it seems to run at 1.1v also checked within windows) just to make sure. As soon as I save I get the same thing as before, the PC reboots then within 1 second, it turns off and on and enters a loop. So it has to do with the voltage.
Now if I manually increase the ram MHZ it goes to 5500 max. 5600 causes a boot failure where it asks me to "repair" the windows. I assume this has to do with the lack of voltage, it being on 1.1v. I did try to increase the voltage of VDDQ and VDD2 to 1.250v just as a test, it did boot fine without the loop and turn off/on but didn't change the outcome of the OC. XMP being out of the question since it increases the RAM v.

So does anyone know, is it the motherboard or the ram that causes this?

 

[geofelt]

1. Is your ram a single kit of two sticks?
Disparate ram, even with the same part number may be sufficiently different to cause problems.

2. Is your motherboard bios up to date?
Updates for ram compatibility is common with new motherboards.

3. The xmp profiles embedded in the ram stick itself have the voltage, speed and cas settings required to run the ram at advertised speeds.
You can duplicate those settings yourself, assuming the bios permits.

4. Your motherboard manual will have explicit advice as to which two slots to install the two sticks.

5. If you have issues, Test the ram.
Run memtest86 or memtest86+
They boot from a usb stick and do not use windows.
You can download them here:

MemTest86 - Official Site of the x86 Memory Testing Tool

MemTest86 is the original self booting memory testing software for x86 and ARM computers. Supporting both BIOS and UEFI, with options to boot from USB.

www.memtest86.com

Memtest86+ | The Open-Source Memory Testing Tool

Memtest86+ is an advanced, free, open-source, stand-alone memory tester for 32- and 64-bit computers (UEFI & BIOS supported)

www.memtest.org

If you can run a full pass with NO errors, your ram should be ok.

Running several more passes will sometimes uncover an issue, but it takes more time.
Probably not worth it unless you really suspect a ram issue.

 

[MasacruAlex]

I have two ram sticks, they're in the 2nd/4th slot as shown on the MB. Both DDR5 and same type.

I did try to copy the XMP profile and re-create it manually, but the moment I change the voltage from AUTO, aka 1.100v, even by 1.150v, it causes a shutdown after saving for a sec, then it endlessly boots. Usually CMOS short fixes it or many turn offs, with some luck triggering the bios launch failed, which on the voltage change doesn't happen, so alaways CMOS with that.

I have the latest bios. I upgraded to the latest because it allows me to set back to 104(or w/e you call it) which allows me to undervolt without losing performance, take note I haven't undervolted anything yet, tried it both on the normal and 104 set bios and still the same issue.

Again, the main issue seems to arise the moment I adjust the voltage for DRAM. It's annoying because I'm losing about 500mhz OC on the ram because I'm sure I could get closer to 6000mhz if not more, if it didn't do that on voltage change, since on 1.100v (default) it allows me to manually go to 5500mhz without any other adjustments from the default 4800mhz.

Could there be any other voltages I can touch that would allow me to OC further? I assume, the DRAM DDR5 voltage is really required but could there be any bios setting /voltage I could mess with that would prevent this mini shutdown followed by endless black screen loop the moment I go beyond 1.100v on DDR5?

Could this happen due to the RAM or the MB? Makes me wonder if it's the ram since that's weird acting upon just slightly touching the DDR5 ram voltage.