Skip to Content
PC Hacks
book

PC Hacks

by Jim Aspinwall
October 2004
Intermediate to advanced
304 pages
7h 44m
English
O'Reilly Media, Inc.
Content preview from PC Hacks

Hack #29. Check the Vents

Add it all up—a screaming 7,200 or 10,000 RPM hard drive, a lightning fast CPU, stunning RAM throughput, blinding video performance, and a modest few watts of sound power—and you realize that puny little fan inside the power supply is not going to be able to suck out the extra BTUs of heat generated by all these hopped-up devices.

The operative words here are "suck out." For some reason, PC chassis and power-supply engineers think that one little 2" fan stuffed into the corner of the power supply box is going to unload hundreds of BTUs of electronically induced heat and pick that heat out of all corners of the chassis. It's just not so. Even a newer PC with a fan and duct work placed above the CPU to remove significant amounts of heat from the PC chassis is not cooling the system as effectively as possible.

Generic PC design recommendations tell us we should evacuate or use a vacuum to pull hot air off the CPU and out of the PC chassis, but they do not tell us that to do so requires construction of air deflectors and ducting to create a maximum vacuum or negative pressure near the CPU heat sink. This is not practical for those of us who are building our own systems. (As well stocked and equipped as my shop is, I know I do not have plastic molding or sheet metal fabrication capabilities!) Those of us hacking prebuilt systems that have fancy ducting can benefit from this hack as well.

The basic physics of vacuum theory are pretty clear in that the pressure, ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.

Read now

Unlock full access

More than 5,000 organizations count on O’Reilly

AirBnbBlueOriginElectronic ArtsHomeDepotNasdaqRakutenTata Consultancy Services

QuotationMarkO’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.
Julian F.
Head of Cybersecurity
QuotationMarkI wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.
Addison B.
Field Engineer
QuotationMarkI’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.
Amir M.
Data Platform Tech Lead
QuotationMarkI'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Mark W.
Embedded Software Engineer

You might also like

Car PC Hacks

Car PC Hacks

Damien Stolarz
Repairing and Upgrading Your PC

Repairing and Upgrading Your PC

Robert Bruce Thompson, Barbara Fritchman Thompson
Wireless Hacks

Wireless Hacks

Rob Flickenger

Publisher Resources

ISBN: 0596007485Errata Page