Posted: 1/26/2011 12:15:57 AM EDT
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Any easy way to tell the culprit?
I thought maybe one of those engine stethoscopes? (google gave nothing) Replaced the 70cfm's last year with 133cfm Scythe Ultra Kazes ,and now have 11 case fans plus 2 Ultra Kazes on the CPU. It's intermittent,but they spin @ 3000rpm,so when it does happen,it's annoying. 
Most are connected to the power supply,a couple to the MB,and it's dam near impossible to unplug each individually.(not to mention getting blood on my hardware) TIA,Stix |
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Like others said. Push on the hub to stop fans when they start making noise to figure it out.
That said, 11 fans? Are they all these 120mm 130cfm monsters? I don't know what you're doing or what made you think you need so many of them, but you almost certainly don't. I've run a 2xAthlon SMP rig in my current case (InWin Q500) with two video cars, 5 15k RPM SCSI drives and two 7200 ATA drives in my current case with only four 120mm case fans controlled by a digidoc 5. All oldschool stuff, but stuff was running a lot hotter back then. So... why so many? He'll I've run quad processor slot-1 systems with triple redundant power supplies and they didn't even have that many fans, total. |
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LOL,
I should have been more specific,and I do thank Y'all for the help. Ain't no room in there to stick my head, And with the side cover off,it depends where I put my head in relation to the case. Sometimes it sounds like it's coming from the front,sometimes the back,at times the top. you'll see in the pics,... I have 2 sets of 3 fans "piggybacked", in the 2 front intakes.Sort of a jet engine compressor deal. 
@AllenNH. You telling me less airflow and redundant cooling on components is a bad thing... 
1 fan fails,and there are already 2 back-ups. I thought ...more airflow and cooling = better ? @Scott_R. Like I said,I don't see the point of getting bloody And as I piggybacked fans,that is a moot point. And, it's a TRAP! Sorry bout the crappy Pics too. I heard you can peel the sticker of the front,and put a drop of oil on the Bearings...true? |
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Quoted:
@AllenNH. You telling me less airflow and redundant cooling on components is a bad thing...
1 fan fails,and there are already 2 back-ups. I thought ...more airflow and cooling = better ? I'm not trying to be rude, but are you a fluid dynamics engineer? Just sticking a bunch of fans in will not, on its own, make things run cooler. It can even make them worse by creating eddies of "dead air" where hot air just keeps spinning around, not interacting much with the surrounding air. You can also end up screwing up the flow through the case if you add a bunch of fans in spots where there originally weren't any. Even with all of the above, more fans can't cause the heatsinks to be any better at moving heat off the components. You'll reach a point (with far fewer fans I'm sure) where you simply can't transfer heat out of the components any faster than you already are, given the ambient air temperature. It's a simple example of where more is not always better. As for the stacking, that's a horrible idea and I'd look there first –– that's probably where the problem is, as that'll kill the "outside" fan fast. Pulling air through one fan with another will usually cause the one that is being pulled to overspeed, damaging the bearings and prematurely wearing out the contacts (or brushes). ETA: First, I didn't read closely enough to see you have THREE stacked on one another, jesus christ.  Second, all the fans will overspeed, not just one, duh.
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in 10+ years on building computers. i have never seen anyone "piggyback" case fans in a computer. with as big as that cpu heat sink....
you don't want that many case fans in a computer. All your doing is producing alot of racket and vacumming the dust from your floor or where ever your computer is. do you even have the fans pointing in the right direction so its taking air from the FRONT of the case to the back? |
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Wow....thanks 4 the help mates!
I built this from components that I did much research on. And yes, I Have Studied Fluid Dynamics. By Lockheed Martin. I may not be as schooled as you. I will look at the piggybacked fans first. I thought they would create higher pressure and airflow Not trying to be rude. This is not my first build . @cruze5, "do I even have my fans pointing in the right direction....." Hahaha,...Now THAT is funny mate!. 
You can't tell from the pics? And it's a Prolimatech Megahalem heatsink. LOL,yeah,it sounds like a jet,but my components are cool. +5C over ambient with an overclock. Intel E8500 C2D 3.12 Gigs, overclocked to 3.33 Ghz @ 70 Watts STABLE XFX 790I Ultra MB @ 2000 Mgz FSB 4 Gigs of OCZ Platinum 1600Mhz DDR3 memory @ 8-7-7-21 timings @ 1.9 Volts OC'd to 1777Mhz. STABLE This ain't 10 years ago tech.It's not i7 either. I'll just get all new fans,I appreciate your time and consideration feller's.. |
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Quoted:
Wow....thanks 4 the help mates! I built this from components that I did much research on. And yes, I Have Studied Fluid Dynamics. By Lockheed Martin. I may not be as schooled as you. I will look at the piggybacked fans first. I thought they would create higher pressure and airflow Well in this case you sound more schooled than me. Get your case, heatsink, and other components modeled and then run a simulation! Get that airflow where it's supposed to go. With that kind of background/education I wouldn't be just stacking them on each other and hoping for the best.. 
There will be more airflow sure, but like I said, it'll also cause the fans to fail prematurely. Are you monitoring them with anything? What sort of RPM are they showing? My bet is they're a few hundred RPM over what they are listed to operate at, with them stacked that way –– or they were, before the bearings started to fail.. 
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Allen,
I don't have a program anymore to run Simulations and introduce objects into the flowpath,as well as extra air sources,and "variables'... You have "joy" for me? but, I did stay at a Holiday Inn Express last night... 
I use Speedfan and you are correct.The last fan in the series is spinning @ approximately +250 RPM. If you don't mind sir, would just PM'ing you be alright for further correspondence? Cheers, Stix |
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Quoted:
Allen, I don't have a program anymore to run Simulations and introduce objects into the flowpath,as well as extra air sources,and "variables'... You have "joy" for me? but, I did stay at a Holiday Inn Express last night...
I use Speedfan and you are correct.The last fan in the series is spinning @ approximately +250 RPM. If you don't mind sir, would just PM'ing you be alright for further correspondence? Cheers, Stix Sure, but I don't really have much more to add.. just cut back on the number of fans (by a lot). Don't stack 'em.
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