severe vcore fluctuation with epox 8rda+

[cow123]

i also have an antec truepower 430 - vcore seems to fluctuate a bit for me also. running a well since i didnt get much of a response posting this in a related thread i thought i'd make my own topic, can anyone help me out with this?

if u have an 8rda+ do you also have a lot of vcore fluctuation?

psu is an antec truepower 430w

barton 2500 @ 2ghz on 1.6v
8rda+
1 stick of 512mb ram @ 366mhz
40gb maxtor 7200rpm
no floppy drive
cd-rw
2 low speed exhaust fans
1 side intake
radeon 9800np

this hardly seems like a power draining setup, yet my vcore fluctuates very excessively:MBM5 readout

vcore is Core 1

 

[cow123]

bump

 

[screw3d]

I have an Antec TruePower 430 with an 8RDA+.

My voltage is at a constant of 4.865v for the +5v rail and 11.612v for the +12v rail. It may seem a bit low but I haven't tested the rail independently with a voltmeter. No stability problems so far even system is rather heavily overclocked (1700+ @ 12x200).

You might wanna post your MBM5 voltage readings?

Bear in mind that the motherboard's voltage reading might not be the actual scenario, but just an approximation.

 

[cow123]

odd, it didnt save the link properly ok here is a reading spanned over a 24hr period

mbm readout

 

[ThaChemist]

Hey there,

Just thought I'd weigh in - here's my system setup:
epox 8rda+ (rev 1.1) + antec truepower 430
1700+ @ 10x200
80 gig WD HD
9700 non-pro (slightly oc'ed)
floppy, zip, cdrw
6 fans (5 on dedicated fan lines, one running full tilt)

I watched my readings for about 1 min, and found vcore fluctuates between 1.74 ->1.76, but is generally stuck on 1.74.
+3.3 = 2.8 -> 2.82
+5.0 = 4.92

Hope you work it out - I really don't know enough to suggest a problem/solution...

 

[screw3d]

Originally posted by: cow123
odd, it didnt save the link properly ok here is a reading spanned over a 24hr period

mbm readout

It's normal to have a slight fluctuation. I wouldn't worry about this at all

 

[FFactory0x]

yourvcore voltage on the board is overvolting which is good. I have m,ine at 1.76 but mbm reads 1.8. Also you 3.3+ is fine. Its actually your vdimm voltage. I couldnt figure it out for a month a while back until i upped thevdimm one day and realized the 3.3 read the same voltage as my rams. Also keep in mind that you should have about a 5%+- limit on your +5 and +12 rails
ex: +5v reads +5.2 or 4.8 your still under the 5%

dont worry about the -12v and -5 volt rail. They were used for old isa cards back in the day and no manufacturer has yanked those rails. I actually heard antec is though on there next revision of there ps. Post any more questions your have
Also look in my profile and aim me if you need help. Im alsways glad to lend a hand


BTW. UP that 2500+ puppy

 

[cow123]

heh, no the vcore is largely undervolted when under load! and i would hardly say a 0.1v fluctuation (0.05+/-) is small!

although this thing gets quite hot while overclocked, i really doubt getting better cooling would help it much :/ this thing can hardly overclock. so far my max stable clock speed has been 2.1ghz on 1.775v or so

 

[AkumaX]

haha check mine out mbm5.jPG

 

[screw3d]

Originally posted by: cow123
heh, no the vcore is largely undervolted when under load! and i would hardly say a 0.1v fluctuation (0.05+/-) is small!

although this thing gets quite hot while overclocked, i really doubt getting better cooling would help it much :/ this thing can hardly overclock. so far my max stable clock speed has been 2.1ghz on 1.775v or so

As I've said, do not believe everything your mb tells you about your voltages. Although you MAY have voltage problems, you are not 100% sure until you've tested it with a voltmeter.

 

[screw3d]

Originally posted by: cow123
heh, no the vcore is largely undervolted when under load! and i would hardly say a 0.1v fluctuation (0.05+/-) is small!

although this thing gets quite hot while overclocked, i really doubt getting better cooling would help it much :/ this thing can hardly overclock. so far my max stable clock speed has been 2.1ghz on 1.775v or so

As I've said, do not believe everything your mb tells you about your voltages. Although you MAY have voltage problems, you are not 100% sure until you've tested it with a voltmeter.