Upside Down / Rightside Up?

[redrocksout]

Does it matter how you install a PSU? The Fortron 530 has its cables towards the panel window when installed rightside up and I was thinking of flipping it over so it'll be easier to hide with the wiring. I'm asking this because I feel maybe the heat would rise AWAY from the heatsinks if upside down? I dont know.. any suggestions?

 

[Dark Assassin]

Well, the only real issue comes in the form of heat dissipation and the actual screw mounting for the unit. Does your PSU come with the lower fan?

Theoretically though, it doesn't sound like a problem. As I said, the mounting would be the only foreseeable difficulty I see.

Dark Assassin

 

[redrocksout]

turns out the fortron would only fit in my case upside down i'm worried that this was the reason the PSU wouldnt work before due to overheating. this new one is a replacement from newegg.

by the way, these readings from MBM dont sound right...

12V = 11.13 - 11.19
5V = 4.08
3.3V = 3.31

but then again i have these connected to it:

OCed 2400+ Mobile XP @ 2.2GHz (11x200 -- 1.75V)
512mb pc3200 mushkin
2 -- 7200rpm Hard drives
1 -- CD-RW
1 -- DVD
6 -- Casefans
Stock Radeon 9800 Pro

 

[redrocksout]

I just compared BIOS readings with MBM readings and...

BIOS:
+12V = 11.71
+5V = 5.03
+3.3V = 3.31

MBM:
+12V = 11.13
+5V = 3.17
+3.3V = 3.31

I dont get it.

 

[redrocksout]

anyone?

 

[Vulcanus]

That's because MBM is retarded and not accurate at all. Same goes with your bios. The only way to really test it is to take a multimeter to it.

 

[Ice Czar]

actually MBM is just reading the BIOS
or more accurately they are both reading the System Management Bus
blame the mobo not MBM

and, once you get real values with a DMM
you can calibrate MBM, unlike the BIOS
the SMBus is a fantastic tool to observe relative value stability
definative values require calibration of MBM

there "should" be sufficent airflow over the heatsink to make oreintation irrelevant
if not there is the problem right there
also, if the PSU isnt exhausting the Heatsink\Case, but just a cooler part of the case,
and you address removing the heatsink exhaust seperately...

that was rather easy for me to accomplish, but then Ive got a rackmount too

 

[redrocksout]

i fixed the problem turns out MBM was configured for a standard Shuttle AN35N rather than my Shuttle AN35N ULTRA.

my final question is if 11.71V is okay with no adjustment of the pots? I have no experience in opening up PSU's and messing with the insides so I dont plan on doing that, really. considering I have buttloads of stuff connected to this puppy, I think I'm good to go?

 

[Ice Czar]

the overall objective is to keep the rails within a 5% value of each of the voltages
that includes any overshoot or undershoot due to transient response
(stuff turning on an off, basically a dynamic load)
all your components from the mobos VRM (Voltage Regulation Modual) to the HDDs are expecting the voltage in that 5%

+12V from 11.4V to 12.6V
+5V from 4.75V to 5.25V
+3.3V from 3.135 to 3.465

then there is overclocking, where many like to see higher rails
\but that introduces the stability issue, if the supply is designed to maintain the stability within 5% and you up the baseline voltage to a higher value, then when it tries to deal with an overshoot, it might exceed the acceptable value the components is able to deal with
thus, supplies that maintain a tighter transient response have an advantage, the spec calls for 5% minimum, but the Antec True Power Series (and NeoPower) clain a 3% (in most circumstances, depending on what its actually powering that more like 1%)
while the PCP&C Turbo Cools are rated at 1%, and that goes a long way to explaining why the are so popular with overclockers

 

[dandragonrage]

That supply has pots inside of it to adjust the rails.

 

[redrocksout]

i adjusted my fortron 530W's 5/12V pots just a teeeeeeeeeensie weeeeensie (i swear, not even at least 3 degrees) and now i'm at 12.93V and 5.62V... is this WAY too much? i'm gonna have to tone it down huh?

 

[Black Label]

i adjusted my fortron 530W's 5/12V pots just a teeeeeeeeeensie weeeeensie (i swear, not even at least 3 degrees) and now i'm at 12.93V and 5.62V... is this WAY too much? i'm gonna have to tone it down huh?

holy shit that sounds dangerous! did you test it with your system? to bad we all dont have spare multimeters lying around

 

[redrocksout]

the fortron has overvoltage/short circuit protection which i assume would shut the PSU off if voltage got too high.

 

[Black Label]

the fortron has overvoltage/short circuit protection which i assume would shut the PSU off if voltage got too high.

tell us how they run when you get them ajusted to suit your needs.

 

[Ice Czar]

personally I wouldnt do that
but its your hardware to tweak
consider an overshoot could put you at 13.5V
likely enough to fry the VRM

 

[redrocksout]

woohoo! got it down to a steady 12.30V and cleaned up wires in the case wihle i was at it i'm one happy camper.