![]() More powerful hardware requires higher wattages, especially if you plan on overclocking. Many modern gaming systems with a 6 or 8-core CPU and a midrange to high-end graphics card should get by with a 650W to 850W power supply, with 750W being a long-time sweet spot for gamers. Smaller units and units specially designed for enterprise and server applications are also available but for common desktop systems, ATX power supplies are it. The vast majority of consumer PCs use standard ATX power supplies. ![]() In the 6+2 pin connector shown at right, you can snap two of the pins in the connector on or off to suit your needs. The term 20+4 pin refers to a connector that can function as either a 20-pin connector or a 24-pin connector. Of course, you should also check the PSU’s connectors to confirm the unit is compatible with your particular system. ![]() Larger cooling fans, which typically move more air while making less noise than smaller fans, are another plus. Higher-quality power supplies almost always use bigger and better capacitors, chokes, and other internal components, and they come outfitted with larger heatsinks for superior heat dissipation-all of which translates into more weight. Larger, heavier units are preferable to puny, lightweight models. ![]() Corsair, Seasonic, EVGA, and Antec are manufacturers with reputations for producing high-quality power supplies, though even they may offer a few duds among all the studs. Look for reputable brands that offer solid warranties and support. Avoid cheap, generic power supplies, which tend to be substandard. First, always buy a power supply from a reputable manufacturer, and look for reviews of it before you buy. ![]()
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