Best Corsair PSUs to Buy Within Budget

Written By Steven Arends

If you are trying to find the best Corsair power supply for your build, it can be confusing.

As a PC enthusiast and a gamer who loves building PCs and suggesting builds to others, I have encountered many persons who have trouble finding the correct power supply for their needs.

In a hurry? Check out my #1 recommended Power supply.

In such scenarios, I try to guide them properly and give them all the information they need to know before searching for a product.

I would also suggest to them some best products that I have come across over the years.

That’s what I’m about to do in this post. I would guide you and present you with some best power supplies from Corsair, which would help find a suitable power supply for your build.

But before that, you should check what power supply do you have currently.

Also, Check out our separate post on the fastest best corsair

Top 7 Best Corsair Power Supplies

1Corsair AX1600iBest digital PSU
2Corsair HX850Best multi GPU PSU
3Corsair RM750xBest gaming PC PSU
4Corsair SF600Best SFX PSU
5Corsair RM750Best modern PSU
6Corsair CX750FBest RGB PSU
7Corsair RM550xBest budget PSU

You might be tempted to buy an average to below-average power supply for your gaming rig. You absolutely should not do that. A PSU supplies power to all the parts of your PC. So if it’s of low quality, it might damage several components of your PC.

So it’s wise to spend a decent amount on a suitable power supply and remain relaxed for years to come.

Here’s a complete guide on can PSU affect FPS.

Here are the top 7 best Corsair power supplies:

1.   Corsair AX1600i

Corsair AX1600i is the best PSU money can buy.

Some of the key features of Corsair AX1600i:

  • 1600 watts of stable power flow
  • fluid dynamic bearing fan of size 140mm
  • topmost 80 plus titanium efficiency
  • zero RPM mode
  • Corsair Link and Corsair iCUE software integration
  • Japanese electrolytic capacitors

corsair-ax1600iCheck Today's Price of Corsair AX1600i ➜➜

Corsair AX1600i is a State of the art product produced by Corsair. No other power supply comes close to it.

It can deliver 1600 watts of stable continuous power with no voltage fluctuation. That’s more than enough to run the very top CPU and a couple of top-of-the-line GPUs. You’ll never need anything more powerful than this for your gaming rig.

The capacitors are 100% Japanese electrolytic capacitors, the best quality you can find. Other internal components are also top-notch and premium. The MOSFETs here are made of gallium nitride, which is highly efficient in producing power.

Also, Check out our expert-recommended best corsair headphones for crystal clear sound effects.

Speaking of efficiency,

Corsair AX1600i has an efficiency rating of over 94%, which puts it in the 80 plus Titanium rating range. Though, to be fair, other 80 plus Platinum PC power supplies are way behind in efficiency percentage. There is no competition here.

If you care about noise, you would be glad to know that Corsair AX1600i comes with a 140mm fluid dynamic bearing fan which offers a near-silent experience. Since the power supply is potent, it rarely kicks in at its full speed, hence the near-silent experience.

If you want to go even lower, at low and medium loads, the zero RPM mode will eliminate the noise.

You have the option to connect it to both Corsair iCUE and Corsair link software to monitor configuration and status. And yes, it is a fully modular power supply. Connectivity is over the top here as it contains a massive amount of connection ports and included cables. Follow our guide to know which PSU cables do I need.

To round up, all of these are backed up by a ten-year warranty. So you’re covered for a very long time here.

  • »full power delivery at 48°C
  • »unmatched Efficiency at 80 plus Titanium rating
  • »top Quality caps
  • »a vast amount of connectors
  • »quality fan
  • »expensive

2.   Corsair HX850

Corsair HX850 is the ultimate power supply for top-end gaming PCs.

Some notable features of Corsair HX850:

  • 80 plus Platinum efficiency levels
  • fully modular power supply
  • 850 watts of stable power flow
  • multi GPU ready
  • 105-degree Japanese capacitors

corsair-hx850Check Today's Price of Corsair HX850 ➜➜

If you want the top reliability of a PSU for your long gaming sessions, Corsair HX850 is the PSU to buy.

It can supply 850 watts of power continuously to your powerful gaming rig. Tight and stable voltages are what you’ll get from it. It delivers enough power to run a high-end CPU and multiple graphics cards together.

The efficiency is top-notch here at 80 plus Platinum. High efficiency ensures you’re getting the proper output power out of a PSU. A fluid dynamic bearing fan is inside, so you get the best fan in terms of performance.

Grab the latest corsair mouse pad for competitive gaming.

The capacitors are excellent 105-degree Japanese capacitors. The other internal components like MOSFETs are also premium. No cabling is permanently fixed as it is a fully modular power supply giving you a clutter-free experience.

And the best part?

You get a ten years warranty which will serve you across multiple PC builds. Corsair HX850 features zero RPM mode, which generates almost no sound at up to medium loads, so you get a pleasant and distraction-free gaming experience.

  • »10-year warranty
  • »Japanese capacitors
  • »zero RPM mode
  • »extremely efficient
  • »pricey

3.   Corsair RM750x

Corsair RM750x is like a small cousin to the HX850.

Top highlights of Corsair RM750x:

  • 750 watts power supply
  • fully modular power supply cables
  • 80 plus Gold efficiency rating
  • virtually silent at medium loads

corsair-rm750xCheck Today's Price of Corsair RM750x ➜➜

It shares some of the feature sets with the HX850. The reliability is one of the best here as it has premium Japanese capacitors inside it. The MOSFETs and connections used here are also top of the line.

The efficiency is 80 plus Gold here, sufficient for any gamer. 750 Watt will serve your high-end gaming PC relatively easily. You can even run multiple graphics cards as it supports that.

Here’s a complete guide on are PSU extension cables safe.

If you’re a Fan of cable management, guess what?

It is a fully modular power supply which is a must-have for a clean and neat PC build. Cable management is exceptionally convenient here.

As is the case with the HX850, Corsair RM750x supports zero RPM mode in which the fans don’t kick in until the load is high. So you get a close to mute sound from the PSU. It makes it an ideal choice among gamers.

A 135mm fan cools down the internal, and it’s ultra-efficient at that. Together with a 10-year warranty, you are set for many years on this PSU.

Also, check out the best corsair fans for your corsair build.


The distance between the peripheral connectors is short at around 10cm. I would love them to be a little bit broad at about 15cm.

Overall, Corsair RM750x is a pretty nice package that checks all the boxes, all the while being affordable.

  • »highly efficient
  • »top quality Japanese capacitors
  • »zero RPM mode
  • »short distance between peripheral connectors

4.   Corsair SF600

Corsair SF600 is The best power supply to buy for small ITX builds.

Some of the impressive features of Corsair sf600:

  • SFX size for ITX builds
  • 600 watts of huge power delivery capacity
  • 80 plus Gold efficiency rating
  • Japanese electrolytic capacitors
  • fully modular power supply

corsair-sf600Check Today's Price of Corsair SF600 ➜➜

Corsair SF600 packs quite a lot of power for a PSU of its size. 600 Watts of continuous power delivery for a small form factor SFX power supplies is jaw-dropping. It is enough for all the high-end CPU power and the graphics card you can stuff inside an ITX case.

It doesn’t lag on efficiency too. 80 Plus Gold efficiency rating certification ensures you’re getting the most out of the PSU.

As for the capacitors, they are 100% 105-degree Japanese electrolytic capacitors. So you get the best of the class capacitors here. The build and the Construction also feel superior.

You’ll know that heat is an essential factor on an ITX build as there are less space and less airflow to remove heat. Corsair SF600 generates low heat, and together with the high-efficiency rating, it manages to give the most power with less amount of heat produced.

If you’re building an ITX gaming PC, you’ll want it to be as silent as possible. Well, it features zero RPM mode, which drops the noise to almost 0 on medium loads, giving you a quiet, distraction-free atmosphere to the game.

Check out our expert’s recommended Corsair CPU Cooler for cooling your gaming rig.


One big challenge for ITX builds cable management. And Corsair SF600 is fully modular, so you get to use as many cables as you need; no extra power cables will be hanging out of it. Cable management is a breeze if you use it.

An 8-year warranty ensures you get peace of mind which is quite valuable, especially for a PSU.

What you do not get with Corsair SF600 is two eps connectors. But for a PSU of this size, that’s not required at all, to be frank.

  • »the best power supply  of SFX form factor
  • »high-efficiency rating
  • »top-notch performance
  • »fully modular
  • »lack of two eps connectors

5.   Corsair RM750

The RM series is a newly revamped line of power supplies introduced by Corsair, which features some excellent new techs like modern standby. And the Corsair RM750 is the latest addition to this line.

Some of the top features of Corsair RM750:

  • 80 plus Gold efficiency rating
  • 135mm fan
  • 750 watts stable max power flow
  • fully modular
  • 10yrs warranty
  • zero RPM mode
  • modern standby feature

corsair-rm750Check Today's Price of Corsair RM750 ➜➜

The PSU is a lot similar to an RM750x. Both of them are capable of continuously stable 750 watts of power delivery. Both of them are excellently efficient at over 90%, thanks to the 80 plus Gold rating. Have some time to spare? Quickly check out our epic guide on will PSU fit in my case.

The near-silent zero RPM fan mode where the fan doesn’t start spinning until it reaches a high load is also present and works flawlessly.

What’s new is the modern standby feature. Corsair RM750 enables the PC to be into a deep sleep and run background tasks like updating software and receiving notifications just like a smartphone. During this period, the PC uses significantly less power and almost no noise.

This feature requires you to have a compatible motherboard, CPU, and PSU to work. If you happen to have the former 2, buying this PSU will complete the package, and you would be able to use this cool new feature.

Also, check out the best corsair case for your corsair build.

Aside from that,

A 10-year warranty by Corsair means that you have your back covered in case any unexpected power supply failure happens.

The only thing that’s slightly concerning is that Corsair RM750 uses Hong Hua capacitors instead of Japanese ones. Though it reduces the price from RM750x, some users might prefer Japanese capacitors.

That being said, I don’t find this an issue at all since Corsair is giving us the same 10-year warranty it provides with the RM750x. It indicates that the Corsair RM750 is as reliable as the RM750x.

  • »extremely silent
  • »easy cable management
  • »top-notch efficiency
  • »Hong Hua capacitors

6.   Corsair CX750F RGB

If you own a dope RGB gaming system and want your PSU to have RGB, too, Corsair has this option for you.

Some features of Corsair CX750F RGB:

  • 750 watts PSU
  • 80 plus Bronze efficiency
  • fully modular
  • 120mm RGB fan with eight aRGB led
  • 105-degree Japanese primary capacitors
  • 5yr warranty

corsair-cx750fCheck Today's Price of Corsair CX750F ➜➜

Corsair CX750F RGB is one of the best ATX form factor RGB power supply units on the market. A 750 Wattage rating will be enough for your gaming rig to enjoy smooth gameplay. It also aces at power efficiency as it’s rated at 80 plus Bronze standard. Power delivery and efficiency are no problem here.

The PC power supply houses a 120mm RGB led fan. It has eight individually addressable RGB LEDs with complete control to make your gaming px shine like a gem. There are three ways to control RGB lighting.

You can use the button on the back of the PSU, connect the PSU to a Corsair iCUE lighting controller or use the aRGB control pin connectors on your motherboard by connecting through the included cable.

Do check out the best corsair mouse for competitive tournament gaming.

As for the capacitors,

They are 105 degree rated Japanese primary capacitors that boast excellence and reliability. You can be assured that you won’t get any accidental hiccups with the PSU and its power flow.

No RGB is enough for a beautiful and clean RGB PC if there is a vast cable mess attached to the PSU. So Corsair CX750F RGB comes in a wholly modular fashion, all cables are detachable, and you get to connect only the cables you specifically need.

All of these are backed by a 5-year warranty. You can continue your pro gameplay with peace of mind.

Check out the easiest way to find out the PSU mounting screws easily.

However, something to keep in mind, expect the PC power supply to be a little noisy at full load. It seems that Corsair did not optimize the RGB fans for a reduced noise fan curve.

  • »Japanese capacitors
  • »addressable RGB lighting
  • »high power capacity
  • »80 plus bronze rating
  • »loud at full load

7.   Corsair RM550x

Corsair RM550x is one of the most reliable, compact, and silent 550W power supplies you can find in the market.

Top features of Corsair RM550x:

  • 550W power supply
  • efficiency rating 80 + Gold
  • fully modular cables
  • zero RPM mode
  • 10yr warranty
  • compact

corsair-rm550xCheck Today's Price of Corsair RM550x ➜➜

Corsair RM550x excels in some key areas: silent operation, efficiency, and compact size despite being an ATX form factor. Let’s explore them.

At 80 plus Gold rating, it is over 90% efficient. You will not lose a lot of energy, unlike other power supply units, due to their high efficiency. The capacitors used here are top-quality Japanese capacitors. It is one of the best 550W PSUs in terms of efficiency.

If your PSU is Overheating, then quickly check out our epic guide.

Corsair RM550x has a 140mm fan that supports zero RPM mode. So you have the option of completely turning off the power supply unit fan to have a silent atmosphere. The power delivery and efficiency are excellent here, so the fans can stay static at low and medium loads without any issue to cut off noise.

It also has a very compact design, so it effortlessly fits into any ATX form factor or mATX form factor PC case without a hassle. A fully modular design allows you to be free from unnecessary wire clutters and keep your PC case insides nice and clean.

Also, Check out our expert-recommended best corsair keyboards.

A 10 years warranty ensures you get a power supply that you would be able to use for several PC builds.

Just make sure you’re not using very high CPU power and flagship graphics cards, and you’ll be fine. If, however, you’re using a powerful CPU and GPU, buying one of the other options mentioned here will be best. A 550W power supply unit might be enough for those, but you would want to give your power-hungry graphics card a little breathing space.

Other than that, Corsair RM550x is completely fine for other PC builds that use a mid-tier CPU and GPU. I would even recommend this PC power supply for those builds as you also get to save money since it’s cheaper.

  • »zero RPM mode
  • »top of the line efficiency
  • »fully modular
  • »top-notch efficiency
  • »not for very powerful gaming rigs

Final Thoughts

I hope you have figured out the best Corsair power supply for your PC build. So which one is it? I find the HX850 a solid choice due to its vast capacity and reliability. For small ITX builds, the SF600 is my obvious choice.

If you happen to have any queries, do leave them below.

Leave a Comment