So much choice, the seller I got my replacement fan from said "We have AVC and Foxconn’s. These fans were pulled from new units that were never used." I considered requesting AVC but then was like just leave it, and received a Foxconn, which is what's in it now, have read some bad reviews on the AVC; now if I had read your review before ordering would've went with the Mag Lev.
Going in SFF Optiplex; 80mm case fan.
I just got 2 news fans with SSO2 bearings whatever that means. It says MTBF 150,000h on the box
I must've got my info' crossed, it's supposed to be a 3 wire; the one I got is the same size and the 5 pin fit but it's 4 wire; my old one is only 1.5w Sunon, the new one is 3.84w and doesn't work with the motherboards fan controls; the only ways I could get it to work is to over-ride fan control which runs it 4000rpm, installed speedfan and got it down to 3000rpm; which isn't terrible as it's going to be across the room, but I'm relying on speedfan for it to work. It does provide the ventilation I wanted, and then some, but just found out that my old fan is temperature controlled so if it needed to run faster it would have. And delving into this mistake a bit deeper I went back and checked, eBay sellers have my exact specs listed for the fan I got except they are 4 wire 4w instead of 3 wire 1.5w; now I know to make sure it's 3 wire and having it out of the case I found an exact replacement, figure for $5 might as well get it now while it's all fresh in my head.You're right, got those mixed up. It's just for a little 80x80x20 4 wire 5 pin proprietary Dell case fan that I think is getting weak, held a tissue up to the case grid and it didn't do anything but maybe at 4w it's weak by nature; found 3 manufacturers of it AVC which list the Advanced Hydaulic Bearing, Foxconn says Brushless, and Sunon with that Maglev; is one of these any better than the others? Not a major issue, but would like to move more air thru the case and it still be quiet.