Randall Posted April 9 Report Posted April 9 1 hour ago, Abby Normal said: I only buy positive pressure cases. Are they all made that way now? Ha, I have no idea what you're talking about. I said I was not a techie. That to me is techie. 1 Quote
Catherine Posted April 9 Report Posted April 9 44 minutes ago, Randall said: I have no idea what you're talking about. The difference is does the case blow, or suck? It's a computer after all so it might be either! 1 1 Quote
Abby Normal Posted April 9 Report Posted April 9 Negative pressure cases, the typical old style, had fan(s) that blow out, which makes the case suck in dust from every crack, crevice, drive, etc. Positive pressure cases, have fan(s) that blow into the case giving you one access point for dust. Most just have a screen that catches most of the dust, but some actually put a thin filter over the inlet that you need to clean. In the days of big computer rooms, the entire room was positive pressure to keep dust from crashing hard drives that were not sealed. The hard drives even had filters on them to keep dust out. I remember changing those filters on a mini computer I worked with. /end stroll down memory lane 1 Quote
mcb39 Posted April 9 Report Posted April 9 Once a year, my IT man takes the tower out on the porch, removes the cover and blows all of the dust out of the inside. 2 Quote
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