What’s the difference between an efficient and an inefficient PSU? What are the differences between PSUs and what do they do? Do I need a modular PSU? These are just some of the questions that may pop into your head when you start shopping around for gaming PC components, but don’t worry - we’re here to help you answer these questions and more.
How much power do you need?
A powerful PSU is a vital component of a quality gaming computer, but more importantly it’s also one of the components most likely to suffer from high heat and heavy-duty use. Don’t skimp on quality here; you should aim for a 80%+ efficiency rating when selecting your unit. In general, if you want to run an overclocked system with multiple graphics cards or dual processors (or both), then look for a supply rated at over 1kW. For example, Corsair’s HX1200i boasts 80 PLUS Platinum certified efficiency and can deliver 1200 watts under load. That said, even smaller units can handle high loads – as long as they are well made. Normally we don't need 1200W, if you have a RTX 3090 paired with intel core i9 or AMD R9 processor you need only 750W and above. if you have an intel core i5 or AMD R5 with GTX 1650 or super you need only 450W-550W.
What type of power supply?
The first thing you need to do is decide on what type of power supply unit (PSU) you want. This will determine what kind of cables and connectors you need, how powerful it needs to be, and how much you can expect it to cost. If gaming is a hobby, rather than a livelihood, there are plenty of affordable options out there which should last for at least five years. Mid-range units provide more power than entry-level alternatives—and so come with higher price tags. But if you’re looking to build a rig that’s capable of playing modern games at high resolutions and frame rates, they’re worth every penny. You don’t need to spend hundreds or thousands of dollars on an expensive PSU either; just make sure it has enough juice to run all your components! and make sure your selected PSU have APFC supported. An APFC is basically an AC/DC converter that controls the current supplied to the PSU via pulse-width modulation (PWM).
Where to find the right unit?
You have a lot of options when it comes to buying a power supply unit (PSU) for your gaming PC. The best way to ensure you’re getting a good PSU is if you pick one that’s been tested and certified by either: Intel, Microsoft, Nvidia or AMD. Manufacturers like Corsair, EVGA and Cooler Master will often work directly with these tech companies on PSUs designed specifically for their systems. Look out also for 80 Plus certification.
Do you get modular or non-modular?
Modular and non-modular PSUs both have their pros and cons. For example, modular units are easier to work with because you can only plug in components you actually need, which reduces overall cable clutter. However, non-modular PSUs usually have better voltage regulation. So which one should you go with? That really depends on how advanced your knowledge of power requirements is, but in general non-modular PSUs are best suited for those who know exactly what they’re doing. If you aren’t sure about whether or not a modular PSU is right for you, just ask an expert at your local computer store. They should be able to help you figure out if it’s worth going with a modular unit or not.
The importance of reviews
Buying a PSU can be an incredibly daunting process. You have a ton of options, not enough information and every time you think you’ve found a good deal it ends up being too good to be true. It’s easy to get lost in all of that and end up with either an overpriced, underperforming unit or a power supply that’s just not powerful enough. Thankfully, sites like Tom’s Hardware are here to help. They test hundreds of PSUs each year so you don’t have to. Just keep these five things in mind when looking at reviews and you should be able to find a great new power supply for your system!
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