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What are your rails?

J

JackNapier

Weaksauce
Joined
Jan 28, 2004
Messages
70
And I don't mean Rail Gun... ;)

What rails does your power supply put out when reading from your mobo?

Mine are as follows on a generic no name 300 watt:


12V -- 12.000 - 12.183

5V -- 4.901 - 4.928

3V -- 3.401 - 3.428
 
mine are as follows:


12V -- 11.74v

3V -- 3.23v

5V -- 4.92v


is my 12v too low?
 
That does look pretty low, but it really won't matter. Stability can still be just as strong even at 11.60 from what I hear.

Though just a note -- I asked what your mobo displays. That doesn't mean it's accurate. Only a multi meter would determine that.
 
According to my Abit hardware monitor mine are as follow:

12V =12.0V
3.33V = 3.33V
5.0V = 5.0V


on my fortron 350watt PSU.

mee likey those rails
 
12V = 12.56V
5V = 5.41V
3.3V = 3.36 (and i modded it to adjust all the way to 4.1V)

Antec TruControl 550
 
12v: 12.416
5v: 5 on the dot(never seen that before, it must be showing off for this thread. it's usually ~4.8)
3.3v: 3.2

Using a cheap Antec 300w. I had a nice Enermax 465w but it broke so only Antec for me from now on.


Running distributed folding and WinMX.
 
Running two instances of prime @ 3.3GHz @ 1.7vcore, I'm currently reading...

+3.3: 3.31v
+5.0: 5.03v
+12: 11.67v

[QTEC 550W]

My 12v is the only one which fluctuates under load. From 11.98v down to what it is now @ 100% load. Vcore flucs too much too, imo, could be my IC7-MAX3 tho.
 
My 350W Enermax is on it's last leg right now and I am getting some fairly large changes on the 12v rail. BTW, all 3 rails are lower than they should be and I think my BFG is straining it. I am not at home right now or I would post exact numbers.

I just orded a Super-Flower TT 550W PSU yesterday, so I will tell you what it's rails are in a few days.
 
lets see...

12V = 11.49V - 11.55V
-12V = -12.01V
5V = 4.87V
-5V = -5.04V
3.3V = 3.18V

this is a crappy 400W powmax psu i bought locally for $40. yeah, i know i need a new one (already... i bought it in august i think) but it's better than the one i had.
 
12V--12.10

5V--4.86

3V--3.23

I also have an AUX that's 1.89V. What's that?
 
+12v: 11.31
-12v: 11.81
+5v: 4.87
-5v: 4.96
3.3v: 3.26

PSU: Antec True 430

I'm a little concerned about my +12v reading, but everything else seems fine.
 
12.04, 5.11, 3.31 @ 4GHz Vcore 1.725 w/100% CPU load - PCP&C 510 deluxe
 
mine are just what MBM5 tells me (with the stock configuration for my mobo) i don't have a molex to get readings off of handy, as i tucked them all away somewhere. also, where would you measure 3.3V with a multimeter?

they were taken under load, tho (folding + winamp + firebird)
 
turbo cooled 350
12v -11.3
5v -4.9
3.3v -3.2
too many led fans and cold cathodes pics
 
Under full load, my 12V rail dips to 11.97V and the 5V and 3V remain the same. However, my aux drops to 1.71V.
 
3.3 = 3.28-3.30 idle and load
5 = 5.21 idle and load
12 = 12.34 idle and load
TTGI 520 4 fan alum :)
 
My powmax 500w reads as low at 11.17 (full load MBM5) on the 12v rail but i got a ton of fans hooked up at full power...
the other rails are within a coule percent...no major fluctuations on the PSU rails, but my core voltage hops arond. reads 1.84 cold start in BIOS, down to 1.79 in windows with MBM5, F@H, Prime95...after a few it starts to fluctuate between 1.76 and 1.79 or 1.81......i already plan on cooling the voltage regulators and the PSU got ripped apart and modded with 2 Sunon 80mm fans

should i be concerned with that if it is absolutely stable?
 
+12V = 12.736
+5V = 5.053
+3.3V = 3.36

PSU - Superflower 470W QuadFan

does 12.736V on the 12V rail mean my PSU is crap?
 
does it fluctuate alot? or has it ever gone from that 12.7ish to something way below 12? if so then i'd be worried...the only reason i'm a little concerned is my core voltage is jumping around...
 
Originally posted by Andrew87
+12V = 12.736
+5V = 5.053
+3.3V = 3.36

PSU - Superflower 470W QuadFan

does 12.736V on the 12V rail mean my PSU is crap?
Click to expand...

more = better :)
 
+3.3v = +3.34V
+5v = +5.11V
+12v = +11.97V


from Speedfan, Aspire 500W

http://www.tradexinfo.com/image/powersupply/atx500all520x400).jpg

one of those.
 
Under 100% Load

+12v: 11.612
-12v: -11.861
+5v: 5.026
-5v: -5.141
3.3v: 3.376

PSU: Thermaltake 420W ATX Active PFC Dual Fan
 
Barton 2500+ 2.3ghz on an Epox 8RDA3+; $35 480w PSU:

3.3v: 2.69-2.7v
5:v: 4.92-4.97v
12v: 11.43-11.61v

This is with about 350w draw on it, at 100% load for several days.

Pally 1900+ stock on a FIC AU13; free PSU that came with my $22 case:

3.3v: 3.25-3.28v
5v: 5-5.03v
12v: 11.86-11.92v

This is a generic 250 watt PSU with about 98w load on it.

Dual PII's on a Tyan mobo using a HP 250w (?) PSU:

3.3v: 3.28-3.33v
5v: 5-5.08v
12v: 11.73-11.92v

This thing has about 70w draw on it? Not sure, it's using an old quantum SCSI drive and a SCSI card, so it's a little bit variable.

All machines are running F@H 24/7. :p
 
my true power 550 is putting out...

12v = 12.16
5v = 5.03
3.3v = 3.34

has never dropped or dipped...I love this PSU
 
Fortron 300W (or 350... Don't quite remember... I think it's 300 though) PSU:

+12v: 11.73
-12v: -12.53
+5v: 5.03
-5v: -5.15
+3.3V: 3.25

Voltages taken under full Prime95 load through AIDA32 (Too lazy to manually take them...)
 
Im having some stability (see sigh random reboots... in this same forum) could this be the cause?

12v 11.80v
5v 4.95
3.3v 3.25
vcore 1.49
5vsb 4.94

This is with a Antec TruePower 480w.

Also my voltages hardly ever fluctuate, on the abit hardware monitor its always completely flate lines on the graph.
 
My Enermax 350 that isn't doing so well. ETA on new PSU is Friday. This is High and Low for 40 minutes.

CPU.......1.95 - 2.13
+3.3V....3.22 - 3.28
+5.0V....4.30 - 4.65
+12.0V..11.61 - 11.98

I am not sure what the neg rails are for, but they are just as bad as above.
 
Originally posted by DocFaustus
My Enermax 350 that isn't doing so well. ETA on new PSU is Friday. This is High and Low for 40 minutes.

CPU.......1.95 - 2.13
+3.3V....3.22 - 3.28
+5.0V....4.30 - 4.65
+12.0V..11.61 - 11.98

I am not sure what the neg rails are for, but they are just as bad as above.
Click to expand...

You'll notice that a majority of the posts in this forum don't include the -rails. They are a holdover from AT and some other older standards. ;) My other box has some really wonky voltages for the -rails, like -40v on the -12v. So, I just ignore it. ;)

As for your PSU... That looks pretty good except the 5v rail. :eek: Although, your CPU voltage moves around a little bit too much for my comfort. ;) How much draw are you putting on this PSU anyway, and what is it rated for?
 
I changed my FSB to 195, but the vCore one setting down and had my PSU running at the supposedly silent mode, and my CPU HSF running at half it's maximum speed and got these results:

primerails.jpg


My 12v rail is incredibly high. It ranged from 12.736 and that for the whole 10hours I was priming for.
 
my lines with my trupower 430

12 = 12.08
5v = 5.20
3.3= 3.5

MODDED of course...I can change the values to anything I want them to be....lol I love this thing. The mod was real easy as long as you can solder two wires together. Just mounted the pots on the side of the psu and can change the 3.3v up to 4.1, the 5v up to 6.5v, and the 12 doesn't adjust at the moment, I got a bad pot, but it will be able to go up to 14.4. Of course I would never put that much voltage through the system, but it's good to know you have it. Plus, my bh-5 loves the 3.4 volts I can shove through it...520mhz 2-2-2-5. I wonder if it'd do 550mhz 2-2-2-5 with 3.6v:eek: . I should try it sometime...
 
According to Sandra (Unicode version)
+3.3V -------- 3.23V
+5V ----------- 5.00V
+12V --------- 11.98V
-12V ---------- -13.10V
-5V ------------ -5.40V
Standby ----- 4.90V
 
+12v 11.37-11.41(changes sporadically)
+5v 5.00v all the time(good for video card OCing, need a stable 5v rail)
+3.3v 3.26-3.30(also flucuates alot)

is it normal for voltages to go up and down liek that? they change every 2-3 seconds between the afformentioned settings
 
+3.3 = 3.31-3.35
+5 = 5.24
+12 = 12.4-12.7
5VSb = 5.1

350W DEER powersupply that came with my $30 case with an a64 3000+ and 9700 pro
 
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