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HOME >> POWER SUPPLIES (Updated: December 26th, 20010)
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POWER SUPPLIES - Plug in a couple of USB devices and poof, your computer dies! Most major brands barely provide enough power to even add another stick or RAM memory, which you'll probably need if you bought a major brand. Sure it may work, but components will die fron premature thermal failure.
CoolerMaster Power Supply Calculator
Antec Power Supply Calculator
eXtreme Power Supply Calculator
| | FEATURES | MOST MAJOR BRANDS | DELTA COMPUTERS |
Mean Time Between Failure
(MTBF) | 
Most aren't even rated | 
>100,000 hrs (>11.4 years) |
| Lower cost |
High failure rates are common. Down time,
loss of data & computer is often the cost |
Prices start at $39
Free installation included |
| Lower operating cost | |
Enery Star certification |
| Eco-friendly | |
Blue Angel certification &: ROHS Compliant |
| Standard size |
Some require over-priced, lower quality odd sized PSU's
Some are standard size | |
| Quiet fans | Some use small, noisy fans | |
| Less e-waste |
High failure rates, proprietary PSU's | |
| Sufficient wattage | | |
| Sufficient amperage | | |
| Sufficient warranty | | |
| Upgradable computer | | |
| Protection features |
Failure can fry your data and computer | |
| Over Voltage Protection | | |
| Over Current Protection | | |
| Over Power Protection | | |
| Short Circuit Protection | | |
| EMI & noise filter | | |
| POWER SUPPLY FAQs |
SHOULD I TURN OFF MY COMPUTER AT NIGHT? - Yes, unless your administrator or boss says not to. If you have tasks such as virus checks and backups scheduled to run at night, then obviously you'll need to leave your computer on overnight. Even then, it's still a good idea to restart your computer each day.
Turning off your computer each night...
- ...could save your life. It is less likely to catch fire if it's turned off.
- ...increases your security. Protect your family, identity, bank account, business, customers, etc. Online criminals, infections, malicious bots and botnets, etc. can't harvest your data if it's turned off.
- ...improves system stability. Windows often makes repairs to itself during shut down, and during startup.
- ...improves performance. System resources are freed up when a computer is re-started.
- ...increases your savings by lowering your electric bill.
- ...reduces polution. Using less electricity reduces pollution.
- ...increases your computers life span. Wear and tear on moving parts like drives and fans is reduced, and most parts are designed to only last for a limited time, rated as MTBF (Mean Time Between Failure).
Caveat - OK, there is a slight possibility that the expansion and contraction that occurs during startup and shut down, could cause an electronic component to fail. Bargain computers often suffer from this type of failure, usually about a month after the warranty expires. Cheap computers use cheap parts, which means a bargain is usually a lemon. You get what you pay for.
What's wrong with most power supplies? - So you saved a few bucks on that flyer special, and you got what you paid for. So what will you say in month 13 when your computer won't start, you loose your data, or your entire computer? Our power supplies have a MTBF (Mean Time Between Failure) rating of 100,000 hours, highly efficient dual 12V outputs, a super silent fan, safety features and full-scale protection for your internal hardware (OVP/OCP/OPP/Short Circuit Protection). All that with prices starting as low as $59.00, with free installation at our shop, our own one year replacement warranty, and a 2 year manufacturer's warranty.
How will a more efficient power supply reduce my electric bill? - By using less AC input power. Poor quality power supplies typically found in bargain computers are not energy efficient; they waste your money by producing heat instead of the DC power that the computer needs. In one year a power supply upgrade that increases efficiency by 10% would easily pay for itself. (.083KW x $0.10/KWH x 24 x 365 = $72.71)
How will a power supply with more watts save me? - By giving you more available power to draw from. A computer will only draw what it needs, so if a bargain computer needs 300 watts, and it has a 320 watt power supply with a 75% efficiency rating, that could drop to 65% at typical power loads of 25% or 75%. In other words your 320 watt power supply is having trouble delivering the wattage your computer needs. Many bargain computers are dangerously close to being overloaded. They also run hotter which further reduces available power and thermal failure is likely. Add another drive or stick of RAM memory and poof, no more computer.
How does heat reduce available power? - When wires get hotter, they loose conductivity. Think of an overheated car. You have really heavy guage wiring, and probably a fully charged battery, yet when you turn the key, the engine barely turns over. How does hot water in the cooling system, kill your waterless electrical starting system? The heat radiating under the hood heats up the wires, so they become poor conductors. Our computer cases are also designed to keep everything cool and quiet.
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