Should I use 3.5" or 2.5" HDDs in a desktop

mgjacc

Reputable
Mar 17, 2014
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4,530
Dumb question. but if l'm building a system am l supposed to use 3.5" or 2.5" HDD's in the tower? Many chassis' show both sizes in their specs and pcpartpicker does not filter by these specs. So if a Case only has 3.5" bays part picker will still show 2.5" drives as being compatible. Does it matter? Or should primary internal storage still be 3.5"?

Thanks in advance
 
Solution
Well SSD's are 2.5" Mechanical hard drives come in both sizes. If you looking at an SSD then the 2.5" bay is what you'll use but typically normal PC HDD's are 3.5"

ktriebol

Distinguished
Feb 22, 2013
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2.5 inch hard drives can be beneficial in a desktop computer. They run cooler and quieter than 3.5 inch drives and are available these days in large capacities at low prices. If those things are important to you in addition to the smaller size, then go for the 2.5 inch hard drives. Having one SSD for your OS and some programs along with one or more 2.5 inch hard drives will result in a fast, cool, and quiet system.
 

dbuchan

Honorable
Aug 16, 2012
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10,520
It doesn't matter. Others have hit the nail on the head. If you do get a 2.5" make sure your desktop has the mounting bay for them or buy the bay. I personally have a 2.5" SSD for my OS and a 1T 3.5" for storage/games.