Originally posted by: Operandi
Originally posted by: GalvanizedYankee
Get the SI-120 because it fits all current boards and chips. The XP-120 does have some,
but not many compatability issues. Use the Akasa 120x25 fan, Seen on the opening page.
http://www.sidewindercomputers.com/
...Galvanized
You pefer the Akasa's over the tri blade Delta's?
For this application yes. You present yourself as a SPCR silence freak and I'm suprised by
you questioning this very good silent fan.
With the SI-120, 44cfm is a good compromise between noise and cooling. At 60+cfm the
temps might drop another 3-4C.
In my working enviroment abients can vary from 30F to 100F, so I might opt for more cfm.
My personal HSF is a XP-90Cu w/57cfm Delta Triple, 92x38. During our summer peak heat
a 79cfm DTB is in the wings if needed.
Be sure and read the second link in this SPCR post.
http://forums.silentpcreview.com/viewtopic.php?p=229098#229098
Akasa is not a brand that wants to hood-wink the buyer, or so I believe.
I love the DTB fans because the low speed units undervolt incredably well. The ones I've
bench tested start/run reliably at 3.5V with no noise or real air flow.
For my baking hot summers, this might be considered.
http://www.sidewindercomputers.com/de12trbllows1.html This low speed is also offered
in a 120x25, but I would opt for the 38 because it will move more air with higher mm of H2O
than the 25mm thick fan when both are undervolted to 5V.
Lets not forget these new fan guys. Just like Delta and Akasa, Scythe does not produce
products that one would hold suspect(ThermalTake
). Before you TT guys get upset.
We should all know by now TT lies about thier fan specs.
http://www.scythe-usa.com/product/acc/002/sflex_detail.html
Note that there are three levels of output, I hope that Scythe does well with thier new
ceramic sleeve bearing fans. They probably will, if the lubricant is very high spec and
the shafts are of the proper hardness to meet the near diamond hard ceramic sleeve.
With hard shafts and tight running clearances very accurate casting and machining is of
the utmost importance. I hope Scythe is up to the task.
Ball bearings are much more forgiving of slight misalignments during manufacture=fact.
Aside for thier unquestionable PSUs Zippy/Emacs has been one of the long time producers
of ceramics for many differant applications, sleeve bearings being but one.
http://www.zippy.com.tw/ It might be slow to load because of the intro. Lower right cornor
click on fine ceramics, check out the new fans they are getting ready to release.
The largest they offer at the moment is 80mm but that will change for sure. Plz note the
construction, see how small the shaft is compared to the ceramic sleeve bearing in the housing.
I would bet there is an intermediate hardened steel sleeve to be inserted at assembly.
At this point in time, quality ball bearing fans are the ticket for me. When fan speeds get
over 2500 rpm, the bearings are set-up with a tad more clearance and the permanent
magnets must be stronger then low speed fans. Both these conditions contribute to the
noise high speed fans make when undervolted=can't have the very best of both worlds.
So, what do you think, Operandi ?
I don't mind talking to you because your not a neffer and most all your posts offer meat
w/little sauce. I dislike neffers that do nothing but throw sauce around and offer no meat
firewolfsm, I know nothing of SilverStone fans but the cfm vs dBA seems about right.
Divide one into the other and about 50% comes up. I did search for complaints about Akasa
products and only found some concerning thier fan controller.
The SilverStone you linked uses a tiny motor just about the size used by Akasa.
These tiny motors pushing large fans WILL generate heat. Ball bearings are much more
forgiving when subject to heat. The Akasa has*balls* but the link on the SilverStone did
not indicate if it was a gelding or not
...Galvanized
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