October 2004
Intermediate to advanced
304 pages
7h 44m
English
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Hack #31. Recognize Memory Limitations
Sometimes your system board and BIOS are your biggest limitations when it comes to adding more RAM—either a BIOS upgrade or a new system board is the answer.
When is any amount of RAM too much? When your system's sockets, BIOS, or chipset cannot address more than 256 MB, 512 MB, 640 MB, or more of RAM chips. System boards with three or four 72-pin SIMM (Single Inline Memory Module) sockets ordinarily will not accommodate more than four 32 MB (4 32 = 128 MB) or four 64 MB (4 64 = 256 MB) sticks of RAM.
So stuff as much RAM in the system as you have available, and determine from startup if the system recognizes it or not. If you install more RAM than the system can handle, save the RAM for another system that can use the same type of RAM.
Your old 486, Pentium I, or Pentium II vintage system may present you with a chipset or BIOS limitation that does not support as much RAM as you can physically install. Check the manual for your system board or look it up on the Web to see how much RAM the board will support. These limitations may be imposed by chipset design assumptions that no one would ever get their hands on that much RAM, much less have an operating system or program that could use it. If the chipset on your system board is capable of handling more memory, the limitation may be in your BIOS.
If you think that a BIOS upgrade might help accommodate more RAM, first scour the Internet for tips and advice to see if anyone else has successfully ...
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O’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.
I 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.
I’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.
I'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.