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Seems legit in that it's an actual thing but it doesn't look like something that will help getting into a good school etc. More of a summer camp type thing that might be fun but is avoidable. At least that's what I got. I didn't read too deeply into it.
 


yep. a weekend over there, but you have to pay first. but I have the tiny certificate lol
 
Darkbreeze, I got my Noctua rubber screws today. They reduced vibration by a ton! Having 6 case fans at full blast is a lot, and installing these on just two of the fans helped an unbelievable amount. And they were super easy to install, and a couple of times I thought I'd rip them, but they were durable, too.
 
Need to put them on all of your fans. If you got the Chromax type, you can even install them on the back sides by putting the long part into the fan holes first then pulling the short stubby end of the screw through the case since it's hard to reach the back of the fan on the inside of the case to do it the other way.
 
My other fans never really vibrated. Those FN V2 fans are really quiet and vibrate little. The Corsair AF ones though, those are the vibrating ones. There is still vibration, but it's very small and not an annoying "grrrr" noise anymore. If I used them on my other fans, I don't imaging the current state of vibration being any different since 80% of the vibration there is comes from the fans with the rubber screws.

Obviously they didn't completely nullify the vibration, but they did one heck of a job to make it not annoying. I don't expect my computer to be perfectly still. And strangely, it's only the top panel and one of the side panels that vibrate. Nothing else on the case has any vibration. I don't expect to have a fully still case. With two hard drives and 6 fans, it's just unrealistic. As long as it doesn't sound like a gear mechanism, it's good.
 
I'd be willing to be the "type" of fans you have mounted up top are the problem. There are a lot of cheaper fans that don't like to work when mounted upside down horizontally. Maybe move your other fans there and mount those ones in locations where they are vertical.
 
I'm unsure of the type of bearing, but even if it were sleeve bearing, and I doubt it is, being positioned on top would be best for a sleeve bearing. But neh, I don't feel like mvoing anything. Vibration is at a minimum now, so I'm happy.

Edit: Yes, they are sleeve bearing, and I read on Hardwaresecrets that sleeve bearing fans are best being mounted horizontonally than vertically so the lubricant doesn't all droop to one side from gravity.
 

By on top do you mean horizontally? That is BAD for many sleeve and sleeve based bearings.

I killed off a gelid in less than half a year that way. A globe fan took maybe 2-3 years so it was MUCH better,

Either way sleeve bearing fans do tend to have a shorter life running sideways(horizontally).

I am putting an NF P12 to the test running 24/7 horizontally, but it will be years to see if this does anything to it based on other Noctua fans I have used and they are a variation on sleeve bearings.
 
I mean like this
case_top.jpg


The fans have a two year warranty anyway.
 
That doesn't seem right. Here is Hardwaresecret's quote:
A drawback observed in sleeve-bearing fans is that they are not designed to be mounted withe shaft horizontal, because by installing it horizontally, the oil inside the tube will all go to one of the sides of the shaft. Therefore for best performance, sleeve-bearing fans must be mounted with the shaft vertical so the oil inside the bearing is always spread more or less evenly.
Click to expand...
This is the shaft:
bearings_031.jpg


So in my fans' current position, the shaft is vertical and proper. Also, sleeve bearing fans in PSUs are always the same way my fans are. A horizontal fan has a vertical shaft.
 
It is not optimal for sleeve bearing fans to run that way, but many variations improve this to an extent.

I have a thermlalright 140mm fan that has been running for years(since the first generation i7's came out) in that position(not 24/7 however) and so far so good.

Either way some fans are simply more loud when run in that orientation so that may be part of the noise issue.
 
I don't even think it's strictly the "type", but also who the fan brand is and what quality of that "type" was used. I've been reading extensive reports of the Aerocool Dead Silence 140mm fans, like those I just purchased to test, which use fluid dynamic bearings, do fantastic and are giving Noctua a run for their money on noise quality, but are dying right and left when used in horizontal applications, like on the top of your case. Strange vibrations, loud brrrp sounds at startup and early death seem to be somewhat common for some fan models when used up top, while others, with the same "type" of bearings, don't show those symptoms at all.

Keep in mind, there can be major differences in bearing quality, regardless that two different bearings are the same "type" or look identical, in any kind of application whether it's PC fan bearings, automotive wheel bearings, engine bearings or any other kind of bearing. Two different fans that both have the same type of bearing may have entirely different performance and longevity characteristics. I was simply saying to maybe try and see if switching them to vertical positions might quiet them down and maybe the other fans are better balanced and will have better characteristics up top.
 
Trust me it is just a mess up in how it is worded. I know just by killing sleeve fans :)

Horizontally mounting sleeve bearing fans is not as good for them.

In that position the top c-clip holds a good portion of the weight as well. The fans magnetic field as well as a magnet in the back of some fans does help.

Oil also tends to run to the bottom of the shaft. At least when the fan runs in a vertical position the oil is across the part of the bearing that holds the weight.

You should look into fluid dynamic(and the many variations of sleeve) and other bearings designed to help oil flow around the bearing. A lack of lubrication is always a killer for fans.
 
I might just return the fans then. If I actually look at the one, it almost seems as if it's shaking. I can see the way the black sticker on it shakes as it spins. The other one does a little, but not as much. The fans are made by Corsair. I've never been big on Corsair, but thought I'd try these fans seeing as they have good LEDS (I'll give them that) and positive reviews.

But then again, since current state of vibration is not bad due to little vibration from the rubber screws, and I don't want to pay for shipping back to Amazon, I could just run these until they die.
 


They are wrong. With the shaft vertical, the lubricant is unlikely to ever make it's way to the upper half of the shaft, and therefore the portion of bearing touching the shaft in that orientation is probably going to lack lubrication. A shaft that is horizontal however, will have the full length of the shaft immersed in lubricant and will carry it around to the top as it turns, fully providing lubrication to all portions of the bearing.


For example, stick a broom handle in a bucket of oil, or water, or whatever. Now spin the broom handle with your hands. Your hands are never going to get oil on them, even if the broom handle is only marginally longer than the depth of the liquid it's being spun in. Now try getting a cookie sheet and filling it half way with oil. Lay the broom handle down in the pan and roll the broom handle with your hand. As soon as the broom handle has made one revolution, your hand, which is taking the place of the bearing that would normally be in contact with the shaft, will be coated with oil and more on the way as you continue to spin the handle. I'm not sure where they got their data from, but from a mechanical standpoint, it's inaccurate.
 


If you simply move them to vertical positions, you may find there is no problem at all.
 
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