Louder than it's performance
I own a Dell Optiplex 7010 MT. I bought two of these for the Optical Drive Bays I don't use. You'd think it'd be a simple "plug it in" type of installation. I was wrong. First and foremost, the outside of these fans, are rounded. I don't know why they would go with a rounded shape. I've never seen a rounded drive bay, have you? So needless to say, they didn't fit next to each other, well, not well at least.
Due to the terrible design, I had to push these fans further into the drive bays than I would have liked, causing a large gap between the outside chassis and the internal bays. Installation was terrible, and nothing but a hassle. I do NOT recommend more than one of these, if you plan on using them in close proximity.
To top off an overdrawn installation, they are REALLY loud. Sometimes they vibrate so much I think they're broken. Making an awful variety of noises in addition to the loud fans, they are annoying to listen to.
And then performance. They work, I'll give them that. But they don't work that well. Because I own a MT, it's a hard choice between having these loud, clunky, terrible looking fans, or having no intake fans at all. With no 'real' experience with modifying a case, these are probably the best option for those who can't add in their own fans. Altogether, they dropped my internal temperatures by about 2 degrees Celsius. So...1 each. Which is about as much as I expected.
So, to sum it all up, I'd say they're not really "worth" the price tag. They perform "OK" for what they were meant for, but due to the loud, and terrible overall design, I just can't give them a great rating.
And for those who are curious what I did with a MT:
SPECS:
Mainboard: Optiplex 7010 MT [0GYGY8]
Operating System: Windows 10 64-Bit
Processor: Intel Core i7-3770K
Video Card 1: Zotac Nvidia GeForce GTX 1080 Ti Mini
Video Card 2: AMD Radeon 7750 HD Series
RAM: Corsair Vengeance Pro 1333 MHz 32 GB (4 x 8 GB)
SATA 3 - SSD 1: Samsung 850 Evo 500 GB [Windows 10] / [28.6 GB Used = 436 GB Free]
SATA 3 - SSD 2: Kingston A400 128 GB [Installed Programs] / [6.96 GB Used = 104 GB Free]
SATA 2 - HDD 1: Western Digital Black Performance 6 TB [Games] / [467 GB Used = 5.00 TB Free]
SATA 2 - HDD 2: Seagate Desktop ST500DM002 500 GB [Media] / [2.30 GB Used = 463 GB Free]
Power Supply: EVGA ATX 1050W 70+ Certified [Non-Modular]
Verified purchase: YesCondition: New