do these all have coil whine?
1587319
Not at all. This PSU has been nothing but silent. The fan barely even runs, since it's so efficient. I promise you, you can't go wrong with this one, or the AX1200
1587320
I haven't noticed it myself at all with this case and I have done plenty of work with the side panel off while it's on... But I did have quite a few fans in there so maybe that covered it but I know there was no high pitch whine on mine. I am also selling mine for half retail price. Contact back if you are interested.
749008
Yes...Haswell architecture. I purchased this mid-July from Amazon, and have had zero issues with it, and no coil whine in my unit. Mine is essentially silent, and has run perfectly since day one. Battery life is excellent, and responsiveness with the SSD is fantastic - this does a cold boot in a few seconds, and wakes from sleep almost instantly. Display is the best I've seen, period. Fantastic machine overall.
1342364
No they make no noise. I bought this as a gift, but had to test it. Transformer at the plug converts to 24 volt DC. Every thing else is plug and play.
785753
Yes 6 coils but I've had to replace 2 already. I would not buy these again. If the next one that goes is on the firewall side I'm going to buy 6 Denso coils and replace them all again.
2028661
it may be the coil heating up when the unit is new we have not experienced this noise with ours.
1664947
Yeah, that sucks. I figured it out after I couldn't return them anymore.I just gave them away and bought a much more expensive one to replace them.I got a Crown 28M to replace my two Pyles. It has been on for about 4 months now, and never hummed. I needed an always on system for PA work.
148158
No- Just loose wires. I won't buy these again. They quit working after 2 weeks. Remember you get what you payed for!! CHEAP STUFF
1807194
No I have not noticed any strange noise in mine. Sounds like yours is defective.
249106
They have great static pressure. If you run at full speed without some kind of controller they won't be quiet. But when controlled they can be very quiet. My idle speed is about 900-1000 rpm and I can't hear them. And I have 4 of them in push/pull on a 280mm rad. I don't have an h80i so I can't comment on those. But at idle my 8350 OC to 4.7 is at 30c. Load Temps about 50.
210388
The units lights are a big part of the problem, turn the lights off and the " whine " goes away. As far as " white noise ", rack mount it, grounding it, then using a power line conditioner w " quality " preferably gold plated cables for the optimum sound. Shouldnt need all this, but unless your outside, your gonna want at the very least a power line conditioner with quality cables. Ive reduced the noise you speak of by a good 75%, if not 80%. Good luck :)
478878
I've purchased PSU's by corsair for years. Their older PSU's did not have a lot of issues until the past year or so. Since then, I've noticed a familiar trend of people seeing the same issues with a strange oscillation (high pitch noise) coming from them. Lately, I usually purchase PC Power & Cooling PSU's, and recently one of these EVGA units for a recent build. So far, the EVGA PSU hasn't given us any issues. I'd bet they're decent enough. Mine went into a workstation build with no problems to speak of to date. :)
10603
None of them. I had to send 3 back to the manufacturer for defects. I don't use them anymore
1483856
I remember that they (four coils) were boxed separately, not sure though. They work great so far..
407266
I still have the electric coils. I hope someone else can answer your question.
823522
Yes, they all buzz. It's not really noticeable if you're there for at least 20 minutes to get used to it or if you're doing some sort of activity. If you're just sitting quietly with no background noise, then yes, they're noticeable. So if for some reason you got these for your home office or for a reading lamp, then you may want to stick with the 27w. To properly answer the base of your question; yes they're supposed to buzz and no yours aren't defective.
541716
No back light bleeding problem and no high pitched high pitched noise with my two monitors. Normally I am susceptible to hearing the high pitched whine of electronic components and these monitors have yet to show this type of behavior. YMMV.
208944
Ours makes a small cyclic hum. You can hear it. It doesn't bother me, but everyone has different tolerances.