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s i s t e m a o p e r a c i o n a l m a g n u x l i n u x | ~/ · documentação · suporte · sobre |
12. Things to Check when Buying Mail-Order12.1. Tricks and Traps in Mail-Order WarrantiesReading mail-order warranties is an art in itself. A few tips: Beware the deadly modifier ``manufacturer's'' on a warranty; this means you have to go back to the equipment's original manufacturer in case of problems and can't get satisfaction from the mail-order house. Also, manufacturer's warranties run from the date they ship; by the time the mail-order house assembles and ships your system, it may have run out! Watch for the equally deadly ``We do not guarantee compatibility''. This gotcha on a component vendor's ad means you may not be able to return, say, a video card that fails to work with your motherboard. Another dangerous phrase is ``We reserve the right to substitute equivalent items''. This means that instead of getting the high-quality name-brand parts advertised in the configuration you just ordered, you may get those no-name parts from Upper Baluchistan — theoretically equivalent according to the spec sheets, but perhaps more likely to die the day after the warranty expires. Substitution can be interpreted as ``bait and switch'', so most vendors are scared of getting called on this. Very few will hold their position if you press the matter. Another red flag: ``Only warranted in supported environments''. This may mean they won't honor a warranty on a non-DOS system at all, or it may mean they'll insist on installing the Unix on disk themselves. One absolute show-stopper is the phrase ``All sales are final''. This means you have no options if a part doesn't work. Avoid any company with this policy. 12.2. Special Questions to Ask Mail-Order Vendors Before Buying
Warranties are tricky. There are companies whose warranties are invalidated by opening the case. Some of those companies sell upgradeable systems, but only authorized service centers can do upgrades without invalidating the warranty. Sometimes a system is purchased with the warranty already invalidated. There are vendors who buy minimal systems and upgrade them with cheap RAM and/or disk drives. If the vendor is not an authorized service center, the manufacturer's warranty is invalidated. The only recourse in case of a problem is the vendor's warranty. So beware! 12.3. Payment MethodIt's a good idea to pay with AmEx or Visa or MasterCard; that way you can stop payment if you get a lemon, and may benefit from a buyer-protection plan using the credit card company's clout (not all cards offer buyer-protection plans, and some that do have restrictions which may be applicable). However, watch for phrases like ``Credit card surcharges apply'' or ``All prices reflect 3% cash discount'' which mean you're going to get socked extra if you pay by card. Note that many credit-card companies have clauses in their standard contracts forbidding such surcharges. You can (and should) report such practices to your credit-card issuer. If you already paid the surcharge, they will usually see to it that it is returned to you. Credit-card companies will often stop dealing with businesses that repeat such behavior. 12.4. Which Clone Vendors to Talk To12.4.1. Some picksIf you've got the bucks to pay for high-end, high-quality hardware, I don't know of anybody better than VA Linux Systems. (Full disclosure: They've given me hardware and made me a director of the company -- but all long after I got real happy with the way they do things.) 12.4.2. Some pansDell: treated the Unix community, customers and its own employees very badly back in 1994 by making an internal decision to kill its market-leading SVr4 port, then obfuscating and lying about its intentions for months after its actions made the direction clear. On the other hand, they started getting serious about Linux in early 2000. I won't say boycott them the way I used to, but I will say you ought to think about VA instead. Gateway: may also be a vendor to avoid. Apparently their newer machines don't have parity bits in their memories; memory is tested only on reboot. This is dubious design even for DOS, and totally unacceptable for Unix. |
Andrew Comech's The Cheap /Linux/ Box page is a useful guide to building with current hardware that is updated every two weeks. Andrew also maintains a short-cut version.
The Caveat Emptor guide has an especially good section on evaluating monitor specifications.
Dick Perron has a PC Hardware Links page. There is lots and lots of good technical stuff linked to here. Power On Self Test codes, manufacturer address lists, common fixes, hard disk interface primer, etc.
Anthony Olszewski's Assembling A PC is an excellent guide to the perplexed. Not Linux-specific. If you're specifically changing a motherboard, see the Installing a Motherboard page. This one even has a Linux note.
Tom's Hardware Guide covers many hardware issues exhaustively. It is especially good about CPU chips and motherboards. Full of ads and slow-loading graphics, though.
The System Optimization Site has many links to other worthwhile sites for hardware buyers.
Christopher B. Browne has a page on Linux VARs that build systems. He also recommends the Linux VAR HOWTO.
Jeff Moe has a Build Your Own PC page. It's more oriented towards building from parts than this one. Less technical depth in most areas, but better coverage of some including RAM, soundcards and motherboard installation. Features nifty and helpful graphics, one of the better graphics-intensive pages I've seen. However, the hardware-selection advice is out of date.
The Linux Hardware Database provides, among other things (e.g., drivers, specs, links, etc.), user ratings for specific hardware components for use under Linux. Our ratings take a lot of the guess work out of choosing which hardware to buy for a Linux box. The site also provides several product-specific resources (i.e., drivers, workarounds, how-to) that help users get hardware working after they have made a purchase.