power supplies is responsible for delivering the necessary energy to different parts of the computer, but when you buy a cabinet that brings economic power source that does not mean that the dilemma is over. The computers of today suffer from two major problems that did not exist, and feed them dissipate their energy and temperature.
What is a source of power? Simply is a transformer that plugs into 110 or 220V and delivers different voltage lines today are those dealing with 3.3v, 5v and 12v. To choose a power supply must look at two facts. Watts and amps. There should be a balance in this, but unfortunately many manufacturers have tried to sharpen us more than once. This is due to a power source could say that it is 500w, but this is not about being 500w continuous, 500w but the best, ie during 60 seconds, 20 degrees C, 0 % humidity and many other environmental factors necessary to ensure compliance, therefore it is better to be guided by the amperage, which in theory is the same as the Ohm's law states: Watts = (Volts * Amps) of Thus we can make an interesting exercise, so if a source has many watts in theory should have many amps.
- Why do we need a source of quality?
1 .- If you get your current home, 220v fluctuate too much, a good source filter may not have this and that variations in the internal current source of power. 2 .- Da
stability when overclocking. 3 .- Da
stability when you plugged 14 cathode lights.
source What do I need? best known sources are the typical ATX, the oldest we occupied in PIII and early Athlon brought the 20-pin ATX connector, molex and floppy drive connector, these are the ATX 1.0, then because of the requirements needed by the P4 and its motherboards, ATX was created sources also come with a 12v auxiliary called ATX12V, these sources are the ATX 1.1.
Over time many boards especially high-end, for AthlonXP used it, but today there is a new format called ATX2.0, the difference between ATX 1.1 and ATX 2.0 is simple, bring a 24-connector pin, 4 pin ATX sources more than 1.1, this is because the new bus video cards and PCI-75A needs to function. The vast majority of current motherboards and even bring PCI-compatible ATX 1.1 but do not guarantee stability to these sources of power.
adapters are also 20 to 24 pins, but I really noticed that much use, because it is only one Y for 12v mean, is nothing but deception, that they help to maintain symmetry in the ATX connector and tight. Ojo, ATX 2.0 sources are backward compatible, you can take a K6 with a power adapter ATX2.0 using a 24-pin to 20 pin, this is included in the sources of power. Within the format ATX2.0 no sources with a +12 v line, with two +12 v lines and even with 4 lines of +12 v. Sources with two lines of 12V is to give more stability to the system. They have separate lines for the 12v going in Pin ATX 24-pin connector and the auxiliary line. The sources that bring 12v 4 lines using the two other lines to feed video cards are special platforms with SLI video cards which occupy two video cards simultaneously.
-Mas
Features Modular
1 .- Sources:
Also within this there is a new type of power source that differs only in aesthetics. Are called modular sources, in which you can choose to connect plugs and what not. Is the case with the Antec NeoPower the ModStream OCZ and Ultra X-Connect.
2 .- Sources with adjustable voltage
Some sources, usually the most expensive and famous, bring rails adjustable voltages. Meaning it can raise the voltage of 12V to 12.6V line for example in the case of the sources that bring regulation of 5%. This helps overclockers Indians, when they are under load and will run a benchmark, so the sources were Guatemalan and throw a little less voltage than indicated, for this simply upload the knob and return to the voltage expected. This is the case OCZ Powerstream 3 .- PFC: PFC stands for power factor correction. By PFC are more efficient sources, a power supply without PFC has lost between 30% to 50%, so your source is a Codegen 600w 300w real power, with PFC loss is 5% thus are more powerful.
in Europe Today's obligation that all electrical appliances that consume more than 50W bring PFC, this is because they spend less light and that are friendly to the environment, are also cooler and therefore last longer.
There are two types of PFC, the assets and liabilities
a. - Active PFC: correction system that refasea, restructuring and even amplifies the electrical signal to the output lines has a steady and uniform. This allows for greater system stability especially in places where electrical installation is not as Catholic.
b. - Passive PFC: passive PFC is a way more expensive PFC. Match the voltages and to remove noise. When a source does not emphasize that brings PFC Active PFC is because you bring a liability.
-If We understand nothing is foolproof tips to buy power supplies.
1 .- Read the ratings, the higher the amperage the better.
2 .- The weight of a heavy source in most cases is better than a lighter font. A good source does not weigh less than 1.3kgs
3 .- The price. Most of the time a power supply side is a good source of power.
4 .- If you are able to buy a good source not despise, is one of the few things that should not be upgrader often, and you can keep for generations of platforms.
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