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===Connectors===
===Connectors===
After you have chosen your power supply based on physical dimensions you need to take a look at what connectors you need on your power supply. Different power supplies have different connectors so it's best to choose one with connectors that meet your every need. It's okay if you buy a power supply and not use some of the connectors. You can just leave them hanging unconnected. Below is pictures of some common connectors found on atx power supplies:
After you have chosen your power supply based on physical dimensions you need to take a look at what connectors you need on your power supply. Different power supplies have different connectors so it's best to choose one with connectors that meet your every need. It's okay if you buy a power supply and not use some of the connectors. You can just leave them hanging unconnected. Below is pictures of some common connectors found on atx power supplies:
{| class="wikitable"
{| class="wikitable"
===Power Requirements===
===Power Requirements===
You need to know how much power you're going to need. It's okay to buy a power supply that is larger than necessary because the power supply will step down to your power requirements. Power supplies typically deliver only the amount of power demanded from them. On the other hand, buying a power supply that is too small for your requirements will be annoying. Many times people will complain of their computer rebooting for no reason at all. Nine times out of ten the reason for this is an undersized power supply. <ref>Many companies that sell computers will install an undersized power supply to save money and increase profit margins. Buyer beware!</ref>
{| class="wikitable"
|- bgcolor="lightgreen"
! '''Processor size''' || '''Hard drives''' || '''Disk drives''' || '''Suggested Wattage'''
|-
| <1.0 Ghz || 1 || 2 || [http://www.atxpowersupplies.com/300-watt-power-supply.htm 300]
|-
| 1.0 - 1.5 Ghz || 2 || 2 || [http://www.atxpowersupplies.com/300-watt-power-supply.htm 350]
|-
| 1.5 - 2.0 Ghz || 1 || 2 || [http://www.atxpowersupplies.com/300-watt-power-supply.htm 400]
|-
| >2.0 Ghz || 2 || 2 || [http://www.atxpowersupplies.com/300-watt-power-supply.htm 430]
|-
| >2.0 Ghz || >2 || >2 || [http://www.atxpowersupplies.com/300-watt-power-supply.htm 530+]
|-
|}
Below is a sample specification chart that should be printed on the sticker on your power supply. Before you buy a power supply make sure the power specifications are equal to or greater than your need. This way you'll avoid trouble down the road.
==Notes and References==
==Notes and References==
