- Oct 30, 1999
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Originally posted by: VirtualLarry
Originally posted by: jonnyGURU
Well, those four out of six were the result of six out of a few thousand. So I think the odds are with you.It's just not normal for an otherwise reputable power supply to exhibit relatively the same problem with two different builds.
You know... unless the input AC waveform is somehow strange in that area, and thus causing more strain on some of the PSU's components... like the transformer windings, which would be the first thing that the AC current flows into in the PSU, and causing mechanical vibrations in the auditory frequency range.
Are these systems hooked up to a UPS? A EMI/RFI-suppressing surge filter? IMHO, they should be, at least one or the other.
I guess I'm curious now, about whether this is a symptom caused by an internal fault in the PSU, or some external environmental factor. (Or perhaps just a particular production run of Antecs, in which some component has some mechanical play and "hums" at times. Like a couple of Chaintech NF3 mobos known for similar issues in the past.)
I would think that between the three chokes and three caps that AC has to pass through on an Antec PSU, any noise on that end would be taken care of. I've found that if there's a problem on the AC side, the inability to filter high and/or low frequencies from the AC signal, then the problems on the DC side are exponential. That's why I think in this case, the interference may be introduced on the DC side of the power supply. Either that or a bad ground. Is the Earth ground on the plug this is plugged into actually wired to ground? I think even if you have a surge strip or battery, you still would need an Earth ground.
Usually it's caused by nonlinear consumption - the load itself. Computers consume power in strange ways.
Shorepower, utility power, grid, all the same and often quite dirty. Of course when the power's out from one of those Florida 'canes you're using an unregulated genny and the beer cooler's compressor kicks in while you're waiting for Doom to load your load may be doomed. Voltage on those rigs swings worse than a far left candidate's middle member during a charity run.
Shorepower, utility power, grid, all the same and often quite dirty. Of course when the power's out from one of those Florida 'canes you're using an unregulated genny and the beer cooler's compressor kicks in while you're waiting for Doom to load your load may be doomed. Voltage on those rigs swings worse than a far left candidate's middle member during a charity run.
VirtualLarry
No Lifer
- Aug 25, 2001
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Have you ever thought about applying for the job, on "Jeopardy", after Alex Trebec leaves?
(Or being a script-writer for any new Star Trek series, if they make any more of them.)
But seriously, technically that's about right. I was thinking more of some sub-harmonic of some "noise" frequency being induced into the AC by something else on the supply circuit myself.
That a good point.. but what if it's one of those chokes itself that is whining? Between smaller chokes, and the xformer, those would be the ones more likely to suffer from harmonic vibration in the audio range, I think.
Actually, my current CRT occasionally makes "whining" noises, ranging from mildly-annoying, to a chalkboard-screeching CRT death-wish sort of noise. I beat it about the head and shoulders with my "meaty hand o' death", and it quiets down in no short order. You just have to teach these bits of electronics who is really boss, that's all.
Just another consulting job that gives me freedom to devise my plan to conquer the world.
Hypothetically speaking of course!Now that's an idea!
Can someone post this sh*t in a common file format? I can't stand these f*ckers who post sh*t knowing that you'll have to download something to use it. Yes, I'm pissed off. This sh*t is uncalled for. What the f*ck is Flac? I'm not downloading anything even though I have a True480 which I wouldn't notice any damn way since my fans drown out any other noise.
- Jan 4, 2001
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Once you've used FLAC, you'll never want to see an MP3 again. MP3 butchers the audio in varying degrees. FLAC yields no data loss - and I explained why I used FLAC. MP3 can introduce additional noise into a stream, and this isn't data that an MP3 encoder is used to seeing.
And FLAC is soooo unpopular, that there are even some standalone CD/DVD players on the market now that read FLAC.
But hey, maybe I could post them in compressed WAV file format just to appease your almightiness, but RAR would be preferable to ZIP - 2.0MB vs 2.5MB, and it's my bandwidth - and you probably don't have WinRAR, so I'd just piss you off more now wouldn't I?
Anywho, with the power supply - I ordered a Seasonic SS-460AGX.
Jeff7:
The Super Silencer is good, but the Super Tornados and S12s tend to vent better (and are a bit quieter) because they are equipped with the 120mm fan.
Hopefully it's not too late to change your order?
The Super Silencer is good, but the Super Tornados and S12s tend to vent better (and are a bit quieter) because they are equipped with the 120mm fan.
Hopefully it's not too late to change your order?
- Jan 4, 2001
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Is too late.
I already got enough ventilation - this is in an SLK3700 case, which has a nice 120mm fan serving as exhaust. And sometime soon, I'll be adding an Arctic Silencer of some variety to the mix, adding a bit more exhaust. I'm going to need extra intakes to balance it out!
- Jan 4, 2001
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Update: Got the Seasonic. News is not good. 3.3v line is at 3.10V. :shocked:
5% tolerance for 3.3V line - 3.135 - 3.465v.
Good efficiency data though, as per a Kill-A-Watt:
(118.8VAC)
Antec:
"Soft-off state" = 0.12A
Idle at desktop = 2.10A
Power factor while idle = 0.69
Prime 95 torture test = 2.54A - 208.20888 Watts
Power factor during test = 0.70
Seasonic:
"Soft-off state" = 0.07A
Idle at desktop = 1.33A
Power factor while idle = 0.96
Prime 95 torture test = 1.67A - 190.46016 Watts
Power factor during test = 0.96
Differences:
"Soft-off state" = 0.05A, Antec is worse
Idle at desktop = 0.77A, Antec is worse
Power factor while idle = 0.27, Antec is worse
Prime 95 torture test = 0.87A, Antec is worse
Power factor during test = 0.26, Antec is worse
I'm hoping that low 3.3v line isn't going to be a problem - maybe (hopefully) it's an inaccurate sensor chip?
Still doesn't change the fact that the Antec was making some weird noises.
:shocked:5% tolerance for 3.3V line - 3.135 - 3.465v.
Good efficiency data though, as per a Kill-A-Watt:
(118.8VAC)
Antec:
"Soft-off state" = 0.12A
Idle at desktop = 2.10A
Power factor while idle = 0.69
Prime 95 torture test = 2.54A - 208.20888 Watts
Power factor during test = 0.70
Seasonic:
"Soft-off state" = 0.07A
Idle at desktop = 1.33A
Power factor while idle = 0.96
Prime 95 torture test = 1.67A - 190.46016 Watts
Power factor during test = 0.96
Differences:
"Soft-off state" = 0.05A, Antec is worse
Idle at desktop = 0.77A, Antec is worse
Power factor while idle = 0.27, Antec is worse
Prime 95 torture test = 0.87A, Antec is worse
Power factor during test = 0.26, Antec is worse
I'm hoping that low 3.3v line isn't going to be a problem - maybe (hopefully) it's an inaccurate sensor chip?
Still doesn't change the fact that the Antec was making some weird noises.
Readings are no good if you cannot verify that your instrumentation is faithful...
Does the kill-a-watt consider power factor?
Get a Dranetz if you can.
Does the kill-a-watt consider power factor?
Get a Dranetz if you can.
- Jan 4, 2001
- 41,596
- 20
- 81
Originally posted by: sharkeeper
Readings are no good if you cannot verify that your instrumentation is faithful...
Does the kill-a-watt consider power factor?
Get a Dranetz if you can.
Considering that it's got an option to measure the power factor, I'd certainly hope so.
Unless you mean for the wattages - I'll add that for those, I simply multiplied the volts by the amps. So might that be inaccurate? The amperage should be accurate though.
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