Best Power Supply Unit 2019

A power supply unit is something that one should never cheap out on.

Simply put, all the components in your computer are going to be using the power from the power supply unit, and if the PSU is not good enough, there are a lot of bad things that can happen.

Things that you can easily prevent from happening if you use a good power supply unit

If you are looking for the best power supply units, you can head over to the market place and find a heap of them.

However, this level of saturation means that companies are now releasing more power supply units than people might need in the first place. This ultimately leads to confusion, as people cannot make the right decision.

With that out of the way, in this roundup, we are going to be looking at some of the best power supply units that are available in the market. It does not matter if you are looking for a full sized ATX, or a smaller PSU, there are enough options available for everyone.

Best Power Supply Unit (PSU) 2019 Buying Guide

 All these units are individually tested with a slew of different hardware configuration to yield the best possible results as well.

Bitfenix BF450G

Best Budget Power Supply Unit 2019


BitFenix is a company known for creating some great components for the PC hardware market, and one of the most famous offering from BitFenix happens to be their power supplies.

Today, we are looking at the Bitfenix BF450G, a budget oriented power supply that is made for people who do not have a really powerful setup, and they just want to power up some of the basic components that are found in the computer.

As the name suggests, this power supply comes with 450 watts of power, and I know that it is not the ideal choice for gaming PCs, but considering the use case, it actually is great.

For starters, you get full power at 46 degrees Celsius, which is a great advantage. Additionally, the power supply is 80 Plus Gold rated, which means that it certainly is a lot more efficient.

The overall ripple suppression is decent, and the load regulation is one of the best I have tested in a power supply. Most importantly, the Bitfenix BF450G is one of the quietest power supplies I have used so far.

The overall build quality is pretty amazing, and last but not the least, it is a pretty compact PSU despite having the standard ATX dimensions.

Everything is good with the Bitfenix BF450G, however, the one thing that you need to know about this PSU is that it is a non-modular unit.

So, if you are okay with having extra cables that you are going to need to tuck, then the Bitfenix BF450G is a great option and a must have for budget-oriented folks.


  • Efficient.
  • Great with ripple suppression.
  • Runs super quiet.
  • Great build quality.
  • The unit is compact.
  • Gives full power even at higher temperatures.
  • Has a great load regulation.


  • Has a non-modular design.

Corsair RM750x

Best Power Supply Unit 2019 Overall


For the longest time, the Corsair RM750x has been one of the best power supplies in the market. So much so, that Corsair has recently decided to refresh the model and brought some minor, yet welcomed improvements to the power supply.

Before we begin, the entirety of the RMx and RMi series is one of the best in the market.

With that said, today, we are looking at the refreshed version of Corsair RM750x. Honestly, when you compare it to the original, not much has changed, but certainly is a good thing because the power supply remains one of the best.

For starters, the ripple suppression is one of the best I have seen; the power supply remains quiet thanks to the fan only spinning when the need arises, but even with the fan spinning, you won’t really hear anything.

The build quality remains one of the best, as a matter of fact, Corsair has somehow managed to reduce the size as compared to the original. Additionally, the power supply is fully modular, is backed with 10 years Corsair warranty, and comes with 2 EPS, and 4 PCI-E connectors.

The good news here is that there is nothing wrong with Corsair RM750x that can break the overall experience.

The only complaint I have is that the capacitors that help with the ripple suppression are attached on the front of the cables rather than being somewhere discrete.

This can create an unsightly experience, but then again, if you are going for a modular power supply, might as well replace the cables later down the road.


  • The power supply offers excellent ripple suppression.
  • It is super quiet.
  • The build quality is solid.
  • The unit itself is smaller as compared to the original.
  • One of the best performances.


  • None.

Seasonic SSR-750PX

Best Power Supply Unit Up to 750W


Seasonic is another company that are great when it comes to bringing some amazing power supplies for the consumers.

Today, we are looking at the famous Seasonic SSR-750PX. One of the higher end offerings from Seasonic, and one of the best power supplies in the market, and for all the right reasons.

The Seasonic SSR-750PX is an 80 Plus Platinum power supply, and to find a power supply of such a high efficiency is nothing short of a miracle. As usually, you get Gold certified power supplies, so the higher the better.

The price is definitely one of the biggest selling points of this power supply. Additionally, it provides full power even at 47 degrees Celsius. Additionally, the build quality is one of the best, and despite being a powerhouse of a PSU, the dimensions are still impressively compact.

The power supply works quietly under load, or when idle, so for those looking for a whisper quiet power supply, this is the way to go. You even get 10 years of warranty, so if you are scared that the power supply might end up failing on you, there is nothing to worry about.

There is no denying that the SSR-750PX is a wonderful, and powerful power supply. However, there is one thing that I would suggest you keep in mind. The distance between peripheral connectors is rather shorter.

Therefore, if you are using a super tower, you might need to get an extension cable.

Overall, the SSR-750PX by Silverstone is a wonderful power supply, and it is powerful.


  • Great performance across all hardware.
  • Excellent price to performance ratio.
  • Extremely efficient.
  • Works quietly even under load.
  • Comes with a 10-year warranty.
  • Excellent build quality.
  • Very compact in dimensions.


  • The distance between peripheral connectors is on the shorter side.

Silverstone SFX Series SST-SX550

Best Compact Power Supply Unit 2019


If you are looking to build a small, SFX form factor PC, then finding a PSU for that PC might not be an easier task for you. There are a handful of companies that engage in making power supplies for that form factor, with Silverstone being one of the few.

Today, we look at the Silverstone SFX Series SST-SX550, one of the best SFX power supplies in the market. Whether you are making an HTPC, or you are working on a small gaming PC, the PSU should be more than enough for you.

It provides you with full power even at 47 degrees Celsius, despite its small size, it has great ripple suppression, can run pretty quietly as well, which is great because noise can be an issue in small form factor computers.

Additionally, Silverstone did not shy on the qualities as not only the build quality, but the capacitors are pretty amazing. Not to forget, the power supply is literally one of the smallest units I have seen.

While there are some great factors about the Silverstone SFX Series SST-SX55, the fact that it is non-modular despite being this small irks me. Other than that, the Silverstone SFX Series SST-SX550 is a pretty amazing PSU that you should buy.


  • Small.
  • Great performance.
  • Good for gaming PCs.


  • Non modular.

Be Quiet! Straight Power 10 400w

Best Power Supply Unit Up to 400W


Be Quiet! Is a company dedicated to bring the users some of the best components in the market. Their power supplies have been the best for a long time. Today, however, we are looking at a power supply that is better for the people who are not looking to spend a lot of money, but still want the traditional Be Quiet! Performance.

The Be Quiet! Straight Power 10 400w.

As you can tell by the power, the power supply is intended for people who are not looking to run powerful components on this power supply. Still, despite being low powered, there are plenty of good things about this unit.

For starters, the overall performance is good, and the unit itself is efficient. The construction as well as the internal capacitors are pretty well built.

The power supply does live up to its name as it is one of the quietest options available in the market. Surprisingly, it is backed by a 5 year warranty, making it a great option.

There are not a lot of bad things about the power supply to be honest, however, at the price you are paying, you would expect the manufacturer to add sleeved cables. Sadly, the Be Quiet! Straight Power 10 400w comes with ketchup and mustard cables.


  • Great performance.
  • Solid build quality.
  • Quality components.
  • Comes with a 5 year warranty.
  • Runs quietly.


  • Non sleeved, ketchup and mustard cables


Best Modular Power Supply Unit 2019


NZXT has made quite a name for themselves over the past couple of years. However, they were never really known for being on the forefront in the power supply market.

However, things have changed as NZXT has partnered up with Silverstone to release a semi digital lineup of power supplies.

Today, we are looking at the NZXT E650; a middle of the road product from the lineup, and still a great power supply as far as the features are concerned.

The power supply comes with a digital interface that can be looked at through NZXT’s CAM service, additionally, you get an amazing 10 year of warranty, and NZXT’s amazing support.

The unit itself is fully modular, so you really do not have to worry about tucking away any cables. The power supply is 80 Plus Gold certified, so great efficiency is guaranteed.

Honestly, looking at the performance, there is nothing about the power supply that I would like to change as it gives you pretty much everything you would want from a high-end power supply.


  • Great efficiency.
  • Backed by amazing 10-year warranty.
  • Fully modular design provides maximum
  • Full power even at 50 degrees Celsius.
  • High quality components.
  • Allows digital monitoring through NZXT’s CAM software.


  • None.

Thermaltake Smart RGB 700W

Best RGB Power Supply Unit 2019


Thermaltake has been making a name for themselves for some time now. They have introduced some great products over the past couple of years, however, their power supplies never received the right attention they deserved. However, today, we are looking at the Thermaltake Smart RGB 700W.

As you can tell, the power supply does come with RGB lighting, completing the circuit of every single component having RGB lighting. However, we are mainly concerned with just how well it performs.

With that said, the power supply does give you many pros; for starters, it provides full power even when the temperature goes hot, the ripple suppression feature is there, and works like a wonder, and the fact that the power supply is fully modular is just an added benefit.

Additionally, the power supply comes with an impressive 7 year warranty, and offers a semi-passive operation as well.

There are a few downsides though, for starters, it is not as efficient as I would have preferred, and the fact that it only comes with one EPS connector is a bothering thing considering how most high-end motherboards require two.

Overall, the Thermaltake Smart RGB 700W is a decent offering for anyone looking for good performance power supply unit.


  • Performs without an issue.
  • Impressive 7-year warranty.
  • RGB fan is an added bonus.
  • Modular design.


  • Is not as efficient.

William Johnson

Hi, I am Will Johnson. A tech enthusiast from early teens, my goal here is to teach everyone about tech gadgets, as easier as possible.
[Total: 5    Average: 4.4/5]

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