August 7, 2000

Looking for a processor upgrade for your PowerBook 520 or 540? The following options were available:

PowerBook 520, 520c, 540, & 540c models:

Manufacturer	Speed	Cache	Price	Status
Newer Technology NUpowr	183MHz PowerPC 603e	128K	NA	Discontinued
Newer Technology NUpowr	167MHz PowerPC 603e	NA	$935	Discontinued
Apple Computer	100MHz PowerPC 603e	NA	NA	Discontinued
Digital Eclipse	33MHz upgrade for 520 & 520c	NA	NA	Discontinued

* Note: These vendors are no longer selling CPU upgrade cards for 5xx series PowerBooks. As a result, you'll have to peruse our classifieds and eBay for upgraded 'Books or cards.