View Full Version : 5v rail TOO HIGH-is this ok?
Newbie_Doo
01-18-02, 08:59 AM
I have seen many questions regarding the 5V rail undervoltage problem on Enermax power supplies. I have an Enermax 431W PSU (EG465P-VE), but my 5V rail worries me because it reads TOO HIGH.
My 12V rail is reading low. Go figure.
Here are the readings:
KILLorBE
01-18-02, 09:33 AM
That is way too high, I wouldn't run my rig with a 5V rail that high.
Did you check in bios? (hardware monitor).
Maybe its MBM giving false readings.
Newbie_Doo
01-18-02, 09:42 AM
Silly of me to trust MBM...
According to BIOS, voltages are:
Core: 1.88v
+3.3: 3.37v
+5: 5.05v
+12: 12.40
Pretty big discrepancy from BIOS to MBM. Hmmm... now I wonder how to compensate for false voltage readings? Any ideas?
Anthony
KILLorBE
01-18-02, 10:19 AM
Maybe you should try a newer (if you don't have the latest already) or an older version.
Right now I'm using version 5.1.0.2 and the readings are a lot better.
I had problems with a few versions, look at these readings (using version 5.09). 5C with only a PEP66...sure:p
Newbie_Doo
01-18-02, 11:06 AM
I just D/L'd it yesterday from MBMs site. Hopefully it is the newest version. :)
It is 5.1.0.4
Newbie_Doo
01-18-02, 11:11 AM
Update: Played around with the settings, found a different ALi sensor choice (specifically for the KA266) and this is what it reads now:
Maximus Nickus
01-18-02, 01:19 PM
Looks wrong, just check your BIOS or use a diff program.
Newbie_Doo
01-18-02, 01:31 PM
Originally posted by nick_cw
Looks wrong, just check your BIOS or use a diff program.
The first pic IS wrong. Did you notice the second one? :)
Maximus Nickus
01-18-02, 03:54 PM
Yes I did, and by the looks of it that is wrong,
the 12V is way to high and the 5V is to low, your BIOS gives you the readings at Full Load so don't trust MBM, I would just take heed of your BIOS.
Nick
Newbie_Doo
01-18-02, 04:14 PM
Perhaps, but the current readings are far closer to the truth than the old ones were. :)
Actually I think the second picture is fairly correct. My 12 Rail ran 12.75 for awhile as well, and the 5v seems correct if its folding.
Yodums
Maximus Nickus
01-19-02, 05:45 AM
I never trust MBM as its always wrong, trust your BIOS, or use a Multimeter for true readings.
Yes my 12V is 12.7.......
KILLorBE
01-19-02, 07:07 AM
Originally posted by nick_cw
your BIOS gives you the readings at Full Load
Nick
No, it isn't Full load, but it isn't idle either (full load would be nice tho....20-21C):cool:
MBM tells me its 26C max. (Full load: running F@H, Playing MP3's and running 3DMark2001).
ButcherUK calculated what my temps would be with a 62WATT peltier on a PEP66 with Delta screamer, he was of by 1C, which tells me MBM is giving me pretty accurate readings.
Originally posted by nick_cw
I never trust MBM as its always wrong, trust your BIOS, or use a Multimeter for true readings.
MBM isn't always wrong, if its configured right it will give you pretty accurate readings, as it uses the same chip your BIOS does.
But I agree a Multimeter will give you the most accurate readings.
I also noticed MBM may give bad readings due to software conflicts (I had problems with several versions of MBM, but that also has to do with my MOBO...P3V4X).
Maximus Nickus
01-19-02, 03:13 PM
Software conflicts are prone but its free so we can't really complain.
Now wheres my Multimeter?
WyrmMaster
01-19-02, 08:51 PM
Of course if you check a molex with a multimeter you will get a different reading. Theres resistance between the ATX connector and the voltage sensors on the MOBO.
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