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Here's a Toms Hardware thread> where someone had a similar issue. It may help point you in the right direction.
If it's running stable at the correct speed, does it matter what voltage it runs on?
it is not, presently it runs at 2400. setting it to 3600 causes it to fail to boot. occasionally it boots fine, but various apps don't work (Firefox can't open, Geekbench crashes, etc.). also, there's the known issue of freezing after waking from sleep, for which the fixed voltage is supposedly the fix.
If you open the sensors part of HWINFO there should be a DIMM voltage from the motherboard, that's a live reading, what does that say?
I'm on Fedora
Here's a few alternatives to HWINFO I've used:
- CPU-X (has a GUI, and is probably the most like HWINFO but still different)
- lm-sensors (might require a custom profile for your motherboard, but can provide live temp/fan/voltage sensor readings)
- dmidecode (built in, can read the data off the dimm, but doesn't read sensors directly)
Edit: Just realised I have that motherboard, and it's probably why XMP stopped being stable. I'll look into it on Monday.
Edit 2: From memory to use lm-sensors you need to use an updated it87 driver for both chips to appear, I can provide a sensors profile on Monday.
CPU-X doesn't list RAM voltages. sensors lists a buncha stuff (none labeled as DDR voltage) but all at 1.2V. dmidecode also lists 1.2V for all items, but I've read that its data is unreliable. I've tried already all the listed options (and then some) and that's why I tried WinPE, as HWINFO64 is supposed to have methods to reliably determine RAM voltage.
Diagnostics
dmidecode output:
Memory Device
Array Handle: 0x000B
Error Information Handle: 0x0011
Total Width: 64 bits
Data Width: 64 bits
Size: 8 GB
Form Factor: DIMM
Set: None
Locator: DIMM 0
Bank Locator: P0 CHANNEL A
Type: DDR4
Type Detail: Synchronous Unbuffered (Unregistered)
Speed: 3000 MT/s
Manufacturer: Kingston
Serial Number: 0B0672F9
Asset Tag: Not Specified
Part Number: KHX3600C17D4/8GX
Rank: 1
Configured Memory Speed: 3000 MT/s
Minimum Voltage: 1.2 V
Maximum Voltage: 1.2 V
Configured Voltage: 1.2 V
Memory Technology: DRAM
Memory Operating Mode Capability: Volatile memory
Firmware Version: Unknown
Module Manufacturer ID: Bank 2, Hex 0x98
Module Product ID: Unknown
Memory Subsystem Controller Manufacturer ID: Unknown
Memory Subsystem Controller Product ID: Unknown
Non-Volatile Size: None
Volatile Size: 8 GB
Cache Size: None
Logical Size: None
sensors:
it8792-isa-0a60
Adapter: ISA adapter
in0: 1.79 V (min = +0.00 V, max = +2.78 V)
in1: 1.18 V (min = +0.00 V, max = +2.78 V)
in2: 1.02 V (min = +0.00 V, max = +2.78 V)
+3.3V: 3.38 V (min = +0.00 V, max = +5.56 V)
in4: 1.20 V (min = +0.00 V, max = +2.78 V)
in5: 1.04 V (min = +0.00 V, max = +2.78 V)
in6: 2.78 V (min = +0.00 V, max = +2.78 V) ALARM
3VSB: 3.36 V (min = +0.00 V, max = +5.56 V)
Vbat: 3.33 V
bios:
dmidecode and sensors output are from XMP2 (3000 MT/s, also 1.35V) as I can't boot the OS at XMP1, but when I could the output was the same.
Unless gigabyte changed it in a newer revision, that motherboard has 2 it87 chips, but you need a newer driver to see both in sensors.
correct, HWINFO64 lists two. thanks for the link, but seems way too cumbersome to install it so I'll use WinPE from my Ventoy USB drive if I need to check if the detected voltage changes.
Yeah it does need a sensors config for your motherboard too, if you want the proper names, but I won't be able to get mine until maybe Sunday.
I'm mainly checking if there's something else to switch in BIOS or that's all there is to it and my setup is just incompatible; I'm waiting to snag a used 5600 when they drop a bit more in price, since they're supposed to work better with faster RAM. but sure, if you get around to it I'd appreciate any config you can share.
Here's my sensors config: https://github.com/frankcrawford/it87/pull/12/files
- BIOS is set to 1.35
- sensors reports 1.38
- dmidecode reports 1.2
So I believe the motherboard is running my ram at the correct voltage, just the dmi is hard coded.
my original reply vanished, so here I go again: thank you very much for your efforts and for following up. I couldn't get the driver to compile on my system but that wasn't my primary goal, guess my setup is just incompatible. hopefully I'll get a used 5600 by year's end and check then. thanks again.
No worries!
I believe for the driver you need to install ~~build-essential~~ @development-tools (forgot about fedora) and then run sudo make dkms.
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this post was submitted on 06 Jul 2023
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