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Inconsistent 12V?

post #1 of 13
Thread Starter 
I was on my server and noticed that the +12V ratings are acting weird...


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It jumps constantly from 5-13V....I'm guessing this is bad???
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post #2 of 13
Software voltage monitors report utter nonense.

The values it's giving you are most likely miles off what they actually are.

Example: all monitors say my 12v rail is at 11.1v, and when measured with a multimeter, it reads a constant 12.3v.

Always trust a MM over software monitoring.
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post #3 of 13
yes
not harmfully but it would mean instable energy input for all components

but the 13V dangerous, overvoltage...

it means if it switches so much it could lead to sudden poweroff, becuase of the lack of Voltage, you better contact antec they'll help you i am sure

but software reading is crap so do a multimeter test first kay ?
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post #4 of 13
Thread Starter 
Quote:
Originally Posted by fluxlite View Post
Software voltage monitors report utter nonense.

The values it's giving you are most likely miles off what they actually are.

Example: all monitors say my 12v rail is at 11.1v, and when measured with a multimeter, it reads a constant 12.3v.

Always trust a MM over software monitoring.
Gotcha....so if it was ACTUALLY fluctuating that much it would be unstable? Cause it's transferring lots of files right now and not stuttering (Steady 20% CPU usage)
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post #5 of 13
Thread Starter 
Quote:
Originally Posted by runeazn View Post
yes
not harmfully but it would mean instable energy input for all components

but the 13V dangerous, overvoltage...

it means if it switches so much it could lead to sudden poweroff, becuase of the lack of Voltage, you better contact antec they'll help you i am sure

but software reading is crap so do a multimeter test first kay ?
It is running in my server, it has a 280W Hipro power supply and has been on for around 10 months straight, so it must be a bad sensor?
Edit: I don't have a multimeter :O
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post #6 of 13
Quote:
Originally Posted by fluxlite View Post
Software voltage monitors report utter nonense.

The values it's giving you are most likely miles off what they actually are.

Example: all monitors say my 12v rail is at 11.1v, and when measured with a multimeter, it reads a constant 12.3v.

Always trust a MM over software monitoring.
I just look in the "hardware health" part of the bios...why they even have temps in there is just dumb, but the voltage readings should be closer to actual assuming that your mother board is detecting them right. If your mother board doesn't detect them right you could have a lot of trouble so I think they should be trust worthy
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post #7 of 13
Quote:
Originally Posted by runeazn View Post

but the 13V dangerous, overvoltage...
Actually, the 12v atx spec is 5%, so 11.4V to 12.6V is accepted as 'ok'.

I wouldn't like to run my stuff at either of these extremes, but neither should cause damage.

Quote:
Originally Posted by Vagrant Storm View Post
but the voltage readings should be closer to actual
nah, even bios readouts are likely to be wrong. you really need to physically measure it.
Edited by fluxlite - 4/26/11 at 2:17pm
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space heater
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S-HVH-01
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CPUMotherboardGraphicsRAM
Intel 2500k 4.7GHz  Asus P8P67 Pro(B3) 2 x Club3D 280X 3GB 16GB g.skill 1600MHz C9 
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Samsung 840 Pro 256GB 4 x 2TB Barracudas in RAID10 2 x WD Blue 1TB RAID0 2 x 3TB Seagate Barracuda 
Hard DriveHard DriveOptical DriveCooling
8 x 146GB HP 10k SAS - various RAID levels RAID Controller LSI 9260-8i 512MB LiteOn IHAS124 Noctua NH-D15 
OSMonitorMonitorMonitor
8.1 Enterprise Acer GD245HQ (120hz) LG W2420P LG IPS231P 
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HP ZR24w LG 32LH3000 (w/IPS) Razer Blackwidow Antec TruePower New 750W 
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Windows Hyper-V Server 2012 R2 2 x LiteION 750W 80PLUS Platinum RD650 24x2.5" chassis 
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post #8 of 13
Thread Starter 
Okay so I'm just going to assume it's fine since now it's reading 4-14V which seems too unrealistic considering it's still running fine
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post #9 of 13
As said before. Use a multimeter. It's the best way to see if your voltages are correct.
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post #10 of 13
Motherboard sensors aren't bad, they're just not calibrated to be accurate. Use a multimeter to get decent readings.
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