5v rail TOO HIGH-is this ok?

N

Newbie_Doo

Admin Parent

​

Joined

Jan 6, 2001

Location

Stafford, Virginia USA

• Jan 18, 2002

• #1

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:

 

Last edited: Jan 18, 2002

KILLorBE

Member

​

Joined

Mar 28, 2001

Location

The Netherlands

• Jan 18, 2002

• #2

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.

 

OP

N

Newbie_Doo

Admin Parent

​

Joined

Jan 6, 2001

Location

Stafford, Virginia USA

• Jan 18, 2002

• Thread Starter
• #3

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

Member

​

Joined

Mar 28, 2001

Location

The Netherlands

• Jan 18, 2002

• #4

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

 

OP

N

Newbie_Doo

Admin Parent

​

Joined

Jan 6, 2001

Location

Stafford, Virginia USA

• Jan 18, 2002

• Thread Starter
• #5

I just D/L'd it yesterday from MBMs site. Hopefully it is the newest version.

It is 5.1.0.4

 

OP

N

Newbie_Doo

Admin Parent

​

Joined

Jan 6, 2001

Location

Stafford, Virginia USA

• Jan 18, 2002

• Thread Starter
• #6

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

Senior Shaman

​

Joined

Oct 4, 2001

Location

Milton Keynes, U.K.

• Jan 18, 2002

• #7

Looks wrong, just check your BIOS or use a diff program.

 

OP

N

Newbie_Doo

Admin Parent

​

Joined

Jan 6, 2001

Location

Stafford, Virginia USA

• Jan 18, 2002

• Thread Starter
• #8

nick_cw said:

Looks wrong, just check your BIOS or use a diff program.

Click to expand...

The first pic IS wrong. Did you notice the second one?

 

Maximus Nickus

Senior Shaman

​

Joined

Oct 4, 2001

Location

Milton Keynes, U.K.

• Jan 18, 2002

• #9

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

 

OP

N

Newbie_Doo

Admin Parent

​

Joined

Jan 6, 2001

Location

Stafford, Virginia USA

• Jan 18, 2002

• Thread Starter
• #10

Perhaps, but the current readings are far closer to the truth than the old ones were.

 

Yodums

Senior Member

​

Joined

Oct 5, 2001

Location

Ottawa, Canada

• Jan 18, 2002

• #11

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

Senior Shaman

​

Joined

Oct 4, 2001

Location

Milton Keynes, U.K.

• Jan 19, 2002

• #12

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

Member

​

Joined

Mar 28, 2001

Location

The Netherlands

• Jan 19, 2002

• #13

nick_cw said:

your BIOS gives you the readings at Full Load

Nick

Click to expand...

No, it isn't Full load, but it isn't idle either (full load would be nice tho....20-21C)
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.

nick_cw said:

I never trust MBM as its always wrong, trust your BIOS, or use a Multimeter for true readings.

Click to expand...

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

Senior Shaman

​

Joined

Oct 4, 2001

Location

Milton Keynes, U.K.

• Jan 19, 2002

• #14

Software conflicts are prone but its free so we can't really complain.

Now wheres my Multimeter?

 

WyrmMaster

I'm a little teapot Senior

​

Joined

Dec 17, 2000

Location

Montana, USA

• Jan 19, 2002

• #15

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.