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Corsair CP-9020140-UK HX1200 1200 W 80+ Platinum Fully Modular Power Supply Unit - Black

4.6 4.6 out of 5 stars 1,817 ratings
Currently unavailable.
We don't know when or if this item will be back in stock.
1200 Watts
Non-Digital
Model name Power Supply
Brand Corsair
Compatible devices computer
Connector type ATX, EPS
Output wattage 1.2E+3 Watts
Form factor ATX
Wattage 1200 watts
Cooling method Air
Item dimensions L x W x H 39 x 22 x 15 centimetres
Item weight 2.3 Kilograms

About this item

  • 80 PLUS Platinum efficiency, delivering 90 percent energy efficiency at real world load conditions.
  • ZeroRPM mode for fanless operation at low loads and outstanding noise reduction.
  • 135mm thermally controlled, fluid dynamic bearing fan only spins up as needed.
  • Fully modular cables for easy installation, less clutter, and helps maximize airflow through your computer’s chassis.
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Corsair CP-9020140-UK HX1200 1200 W 80+ Platinum Fully Modular Power Supply Unit - Black

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From the manufacturer


More than 20 years of PC performance innovation

Founded in 1994, Corsair has grown from pioneering the high-performance DRAM market to one of the world’s leading providers of enthusiast-grade PC components and peripherals. Our groundbreaking technology and innovation can be found in our high-performance memory, ultra-efficient power supplies, PC cases, PC and CPU cooling solutions, and solid-state storage devices.

Platinum efficiency, fully modular and virtually silent

CORSAIR HX series power supplies give you extremely tight voltage regulation, quiet operation, Platinum-certified efficiency, and a fully modular cable set. Built with all Japanese 105°C capacitors, they’re a great choice for high performance PCs where reliability is essential.

Quiet, efficient operation

80 PLUS Platinum efficiency reduces operating cost and excess heat, and Zero RPM fan mode ensures virtual silence at low and medium loads.

100% Japanese 105°C capacitors

Premium internal components ensure solid power delivery and long term reliability.

Zero RPM Fan Mode

Since the fan doesn’t turn on until it’s needed, you’ll enjoy virtually silent operation at low and medium loads.

Power In Your Hands

Toggle single +12V rail or multi +12V rail mode. In the “SINGLE” position, the full output capability of the power supply’s +12V rail is available to any and all connectors, while in the “MULTIPLE” position, each individual connector has Over-Current Protection so no more than 40A of current can be delivered on any given cable.

Product guides and documents

User Manual (PDF)

Customer reviews

4.6 out of 5 stars
1,817 global ratings

Customers say

Customers like the value for money, build quality, and power supply of the system power device. They mention it's a high-end product, well constructed, and stable. Some also like the functionality, ease of installation, and fan speed. However, some customers have mixed opinions on the quietness and cable quality.

AI-generated from the text of customer reviews

Select to learn more
QuietnessValue for moneyBuild qualityPower supplyFunctionalityEase of installationFan speedCable quality
193 customers mention ‘Quietness’135 positive58 negative

Customers have mixed opinions about the quietness of the system power device. Some mention it's almost silent, while others say the coil whine got very loud after 2 years and sounded like simultaneous screeching and electronic grinding.

"...quality components ensure long life and server grade reliability, silent, and comes with some neat software that will keep the nerds happy...." Read more

"...Pros: + Fully modular with testing port + I experienced no coil whine, YMMV..." Read more

"...Good: Very quiet, silent even as there's no fan movement at anything that I've used it for yet...." Read more

"...It's let down horribly by the cables and the coil whine. Coil whine is to be expected from high power devices but both Corsair units I've had..." Read more

164 customers mention ‘Value for money’142 positive22 negative

Customers like the value for money of the product. They mention it's a high-end power supply, well worth the £148 they paid for it, and cheap to run. Some say the integrated fan is usually idle unless under load. Overall, most are satisfied with the product's quality and efficiency.

"...Could handle a very high-end rig and is platinum rated so very well made and efficient." Read more

"...+ Good price over other platinum models + The wires are more flexible than an EVGA model for bending around the case..." Read more

"...The HXi's are the best PSU's. Fanless or not, they're amazing. Corsair support is fantastic too (with UK RMA Service!)...." Read more

"...I guess this is okay value but one last long therefore I give it four stars." Read more

118 customers mention ‘Build quality’98 positive20 negative

Customers like the build quality of the system power device. They mention it's well-constructed, has ample power reserves for most, and a reassuring heft. They also say the cables provided are of great quality and completely black. Overall, customers say it could handle a very high-end rig and is platinum rated.

"Plenty of headroom for future PC upgrades. Could handle a very high-end rig and is platinum rated so very well made and efficient." Read more

"...It’s efficient, quality components ensure long life and server grade reliability, silent, and comes with some neat software that will keep the nerds..." Read more

"...This is really powerful PSU with excellent build quality with Corsairs 10 year warranty, you can feel reassured that this power supply with last and..." Read more

"...Overall, this power supply is not cheap, but it is of the highest quality and will save you money in the long run." Read more

111 customers mention ‘Power supply’99 positive12 negative

Customers like the power supply. They say it's a great product, has plenty of power, and is efficient. They also mention it runs around 950W 24/7 without any issues. The software provides a great view and record of total power consumption.

"Plenty of headroom for future PC upgrades. Could handle a very high-end rig and is platinum rated so very well made and efficient." Read more

"...The tab that I like is the Power tab. This shows you how efficient the power supply is, gives you voltage & amp readings for the three major rails,..." Read more

"...As mentioned, smoother power delivery and sufficient supply for the system; water cooled CPU, 5 fans in total, 4 drives (NVME M2, SSD, 2 * hdd's),..." Read more

"...to see what the PC is pulling from the wall, power demand and efficiency ratings...." Read more

69 customers mention ‘Functionality’60 positive9 negative

Customers like the functionality of the system power device. They mention it functions flawlessly, runs well, and provides a decent power level for their computers. Some say it has never failed them and has never given them any problems since installing.

"No issues. Was bought to replace a 430W Corsair and I needed a bigger wattage PSU so I could get a graphics card...." Read more

"...Installation was easy, and it has not given me any problems since installing...." Read more

"After 2 years the coil whine got very loud, the PSU works normally but its very noisy when not under load...." Read more

"In terms of power supply, it does the job...." Read more

50 customers mention ‘Ease of installation’41 positive9 negative

Customers find the installation of the system power device easy. They mention the most important cables are labeled, the Corsair Link software is easy to setup, and the instructions are comprehensive and easy to follow. They also appreciate that you can test it before installing. Overall, customers are satisfied with the quality and say it takes about 30 minutes to fit.

"...It took about 30 minutes to fit. I used it to replace a 650w semi modular psu...." Read more

"...Installation was straightforward. Took less than a hour to put in the new one and connect everything back up (this for me is quick)...." Read more

"...Item came in 24 hours, install was super easy thanks to the full modular set-up, and yes, the coil whine has completely disappeared and I can edit..." Read more

"Very easy to install & silent operation under my usage (DAW, video editing & some gaming (granted only on a GTX1650)...." Read more

44 customers mention ‘Fan speed’37 positive7 negative

Customers like the fan speed of the system power device. They mention it runs in fanless mode when power draw is low, and the integrated fan is usually idle unless under heavy load.

"...series PSU, you get Japanese capacitors rated for 105’C, zero RPM fan mode technology, and Corsair’s Link Digital support where you can monitor its..." Read more

"...As mentioned, smoother power delivery and sufficient supply for the system; water cooled CPU, 5 fans in total, 4 drives (NVME M2, SSD, 2 * hdd's),..." Read more

"...and very smooth power. Corsair Link is really useful to see what the PC is pulling from the wall, power demand and efficiency ratings...." Read more

"...This one is a lot more efficient and the fan only comes on if it's drawing lots of power. Most of the time, it's turned off...." Read more

82 customers mention ‘Cable quality’55 positive27 negative

Customers have mixed opinions about the cable quality of the system power device. Some mention it has enough cables for pretty much anything, while others say the cables provided are needlessly long and very firm. They also say good cable management is almost impossible in some cases.

"...You also get a nice back for all the cables… this is handy for storing the cables that you don’t use...." Read more

"...+ Good price over other platinum models + The wires are more flexible than an EVGA model for bending around the case..." Read more

"...It comes with no single PCIe cables - they are all doubled up...." Read more

"...There's plenty of cables for future devices." Read more

Saves you money in the long run.
5 out of 5 stars
Saves you money in the long run.
While I was updating my PC with a new CPU, motherboard, water cooler and RAM, I decided to upgrade the power supply at the same time. The old supply was perfectly, but it wasn’t as efficient as it could be. That’s why I went for this one, it’s 80 Plus Platinum rated.Does efficiency make any difference? Yes, to your wallet. They are more expensive to buy to start with but will save money in the long run. Electricity is not cheap nowadays and if you are an inefficient power supply, then you are pouring money down the drain and also possibly harming the environment more than you need to.This is the first time that I’ve bought a modular power supply. Supplies with fixed leads can either have too many leads for your application or not have enough. It’s a fine balance. Having a mass of unused leads can be a headache to hide away and not having enough means adding adapters and everything becoming a mess.This supply come with a bag full of leads and I mean a full bag! There is a range of motherboard leads, leads with SATA power plugs, and leads with the older Molex plugs. You only need to plug in the ones you need into the power supply, making tidy installations more possible.What can be a little unnerving is that the built-in cooling fan only starts up when needed. As I type, I can see that the power supply temperature is currently 35°C, and the fan is off. The system is drawing around 60-70W at the moment. How do I know this? Well, that’s the great feature of this power supply, it has a USB port on it that can supply all this information and more. You just need a spare USB2 header plug on your motherboard. You can download software from Corsair to read this information but I use AIDA64 software which is also compatible.Overall, this power supply is not cheap, but it is of the highest quality and will save you money in the long run.
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Top reviews from United Kingdom

Maximillian Fox
5.0 out of 5 stars Great PSU
Reviewed in the United Kingdom on 26 October 2024
Size Name: 1000 WattsStyle Name: Non-DigitalVerified Purchase
Plenty of headroom for future PC upgrades. Could handle a very high-end rig and is platinum rated so very well made and efficient.
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SlinkyTek
5.0 out of 5 stars Here's a very quick review of the Corsair HX 750i 750W ATX PSU
Reviewed in the United Kingdom on 15 May 2015
Size Name: 750 WattsStyle Name: DigitalVerified Purchase
So for my recent PC build, I initially picked up and installed Corsair’s Builder Series CXM 750W PSU to power the whole system. It’s a neat semi-modular PSU that’s sufficient for my needs. However soon after installation and benchmarking I was hearing coil wine from my system. I thought it was my graphics card at first, but then after further investigation realised that in fact the power supply was emitting a loud wine when the graphics card was under load. This, and an over loud fan, prompted me to return the CXM 750W power supply after a few days.
I decided to stick with Corsair and go for their Pro Platinum Series, HX750i 750W power supply. And I’m very happy with it.
It came well presented with the power supply packed in a velvet bag and well protected in it’s snug fitted foam packaging. You also get a nice back for all the cables… this is handy for storing the cables that you don’t use. And you get plenty of tie straps, screws, a cable grip, and the instructions.
Installation is simple, it’s an ATX PSU. But I will say that plugging in some of those cables is tough; so it might be better to plug in the cables you need before securing the power supply in your machine.
I’m not going to go into detail about wattage and amps, it’s not necessary. This will easily power my set up and will easily run a second 980 G1 Gaming in the future and it’s most efficient between a 40-50% load @ 93%. And being as it’s a Corsairs HXi series PSU, you get Japanese capacitors rated for 105’C, zero RPM fan mode technology, and Corsair’s Link Digital support where you can monitor its performance and control fan speed in the desktop. The software will actually give statistical information from other sensors in your system, including case fan speeds and CPU & GPU temperatures.
You get all the usual connectors here with the Link Digital link added. This connects to a spare USB header on your motherboard. And for those that are a little paranoid there is a button to test the fan is functional, although Corsair do clearly state the zero RPM fan speed technology.
The software is useful giving you 5 tabs that show you information in different ways. I feel it could be made much simpler though. The tab that I like is the Power tab. This shows you how efficient the power supply is, gives you voltage & amp readings for the three major rails, fan speed, and temperature. The information here will surprise a lot of people that think they need more watts than necessary.
If you need a robust, reliable, and modular PSU that you can rely on, then the HXi series supplies from Corsair are hard to beat. It’s efficient, quality components ensure long life and server grade reliability, silent, and comes with some neat software that will keep the nerds happy.

https://www.youtube.com/watch?v=pyKuZq0Wwhg
14 people found this helpful
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The Professor
5.0 out of 5 stars Wins out over EVGA's coil whine
Reviewed in the United Kingdom on 1 May 2016
Size Name: 850 WattsStyle Name: DigitalVerified Purchase
This '80 plus platinum' rated PSU is great - and also a TIER ONE on the community tomshardware PSU rating list. I urge you to seek this list out yourself to look at your best options and never buy one blindly - the PSU is always overlooked and it's responsible for the wellbeing of all your components. If it goes, it needs to not take everything else with it.
My previous one was a Corsair CX750 which is neither modular nor up to anything strenuous (Tier 4 of 5), also only "80 plus bronze", and given how often I have it switched on, it was time for an upgrade.

After seeking a really power efficient and MODULAR PSU (the cable management was finally getting to me), I found an EVGA 850W T2 (Titanium) for ~£190 on ebay (Titanium being the maximum efficiency rating at the time of writing, even over Platinum), but it had horrible coil whine even when idle. First time i've ever had that :( I'm currently in the process of sending this back, and it's a shame because it was very sleek, much like this Corsair model.

but my point is - with this PSU, I get the power efficiency I wanted (platinum and titanium are pretty much the same efficiency which is of course load-dependent) at £60 cheaper, AND I don't have to put up with that annoying chirping because Corsair are actually capable of glueing their parts together properly! ;)

Pros:
+ Fully modular with testing port
+ I experienced no coil whine, YMMV
+ "80 plus Platinum" efficiency rating (~92% at optimal load)
+ Good price over other platinum models
+ The wires are more flexible than an EVGA model for bending around the case
+ Tier one PSU - comes with all the benefits therein (for example: Haswell certified, meaning they can cope with the C6 and C7 sleep states of 0.05Amps without triggering the under-current protection switch)

Cons?
- Unlike EVGA, the fan doesn't have an 'eco' switch option, the fan is set to automatically spin when needed (under high load)
- Accompanying paperwork e.t.c in box doesn't look as flashy as EVGA's, but it's the unit that counts.

Thank you, Corsair!
12 people found this helpful
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Acco
5.0 out of 5 stars Worth the effort and the money
Reviewed in the United Kingdom on 23 September 2018
Size Name: 850 WattsStyle Name: Non-DigitalVerified Purchase
This power supply arrived today and I fitted it a few hours after I got it. It took about 30 minutes to fit. I used it to replace a 650w semi modular psu. This new unit is more powerful in preparation for a new graphics card and also to provide smoother power delivery for the whole system.

Good:
Very quiet, silent even as there's no fan movement at anything that I've used it for yet.
As mentioned, smoother power delivery and sufficient supply for the system; water cooled CPU, 5 fans in total, 4 drives (NVME M2, SSD, 2 * hdd's), external sound card, etc..
Sufficient power for a new RTX 2080 ti or something similar (currently GTX 980ti).

Not so good:
Has 'high quality' cables which have capacitors built in (type 4) which were replacing the older cables (type 3). These new cables are very hard to bend in places as the capacitors make them stiffer. The capacitors are a good thing except that it's difficult to get the cables to fit just how you want them to. The 8 pin power cable to the motherboard was particularly difficult to fit. In the end I unplugged it from the psu and fitted it to the motherboard then threaded it back to the psu.

If I was buying another I might go for the HX850i or similar so that I could use the Corsair link software for monitoring and tweaking though I understand the HX850i comes with the older type 3 cables so might want to upgrade these. The prices of both HX850 and HX850i are similar (about £10 more for the HX850i).

Very happy, easy enough to fit, silent running and would buy this or similar again.
16 people found this helpful
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Top reviews from other countries

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Amazon Customer
5.0 out of 5 stars Perfecta fuente para minería
Reviewed in the United States on 18 October 2021
Size Name: 1200 WattsStyle Name: Non-DigitalVerified Purchase
Soporta una gran cantidad de dispositivos sin problemas. Se nota la calidad de los materiales.
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S4G
5.0 out of 5 stars Best quality for price
Reviewed in Saudi Arabia on 3 June 2022
Size Name: 750 WattsStyle Name: Non-DigitalVerified Purchase
Platinum 80+ and a 10 year warranty
Totally worth it 👍
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Sridhar murugan edge
5.0 out of 5 stars Good choice over Silverstone and other brands
Reviewed in India on 28 July 2021
Size Name: 1200 WattsStyle Name: Non-DigitalVerified Purchase
Very good quality PSU has 6 pieces 6+2 cables and 2 cpu cables... quality product
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Johny Royal
5.0 out of 5 stars a great deal
Reviewed in the United States on 7 May 2020
Size Name: 750 WattsStyle Name: Non-DigitalVerified Purchase
Came with all accessories. Looks and works as if brand new.
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Yair S.
5.0 out of 5 stars Totalmente recomendable
Reviewed in Spain on 20 March 2017
Size Name: 850 WattsStyle Name: DigitalVerified Purchase
Presentación impecable, quedan todos los cables organizados y se nota la calidad. Muy buen producto. Viene en una funda, con una bolsa para los cables no utilizados y varias bridas para el montaje.
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