Fan: Delta EFB1212SHE
Dimensions: 120mm x 38mm
Number of blades: Three
Maximum RPMS: 3700RPMs
Static Pressure: 13.21mm in H2O
Bearing Type: (most likely) Ball bearing
Here's an image from Sidewinder Computers, where I got mine:
Here's a picture of mine:
A view from the inlet side:
txtmstrjoe's thoughts: This fan is indubitably one of my absolute favorites. It's powerful, and it works superbly on radiator (i.e., heatsink) duty. It is supremely effective on a heatsink like the Thermalright SI-128SE or the Ultra 120/Ultra 120 Extreme.
Notice the fan blades, and compare their orientation to most any other fan you have. They are designed to turn clockwise when looking at the inlet side; every other fan I know runs counter-clockwise when viewed from the inlet side.
Pretty neat, huh? The other Delta Tri-Blade, the EFB1312VHE, has its three blades rotate in the conventional counter-clockwise way. BORING
This fan is not nearly as loud as its specs might suggest. I hear a whoosh as the air its pushing slams into the heatsink fins, but the motor itself is inaudible to me. And it's not an unpleasant sound signature, either. I don't mind running this fan at full RPMs, even at bedtime. I can say that about only one other fan in my collection.
Like the other fans I've shared so far, this one responds well to 7V undervolting. It is more effective at 7V RPMs than the 9-bladed FFB1212VHE
. This suggests that the design is much more efficient, as it does better at cooling duties than a fan with three times as many blades.
It doesn't lose out to any other fans I have in terms of effectiveness on heatsink duty. I'll very likely come back to using this fan sometime.