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Corsair Professional HX850W 850W ATX 12V 70A 24PIN ATX Modular Power Supply Active PFC 140mm Fan

Corsair Professional HX850W 850W ATX 12V 70A 24PIN ATX Modular Power Supply Active PFC 140mm Fan - 1
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Corsair Professional HX850W 850W ATX 12V 70A 24PIN ATX Modular Power Supply Active PFC 140mm Fan - 38650_l.jpg Corsair Professional HX850W 850W ATX 12V 70A 24PIN ATX Modular Power Supply Active PFC 140mm Fan - 38650_1.jpg Corsair Professional HX850W 850W ATX 12V 70A 24PIN ATX Modular Power Supply Active PFC 140mm Fan - 38650_2.jpg Corsair Professional HX850W 850W ATX 12V 70A 24PIN ATX Modular Power Supply Active PFC 140mm Fan - 38650_3.jpg Corsair Professional HX850W 850W ATX 12V 70A 24PIN ATX Modular Power Supply Active PFC 140mm Fan - 38650_4.jpg Customer Photos (0)
Reg. Price: $199.98  CAD
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   Shipping Weight:   9 lbs
   Part #: CP-9020032-NA / CP-9020032-US
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Features    [ Edit | History ]

Legendary Performance and Reliability

Quiet operation at low loads, modular cabling and 80 PLUS® Gold efficiency makes HX Series PSUs a great choice for high-performance PCs.

Quiet operation at low loads
Basic PC power supplies have fans that spin whenever your PC is on – whether you’re pushing your graphics card to the limit or just surfing the web. HX Series power supplies are smarter than that: they generate less heat, so they require less cooling, and the thermally controlled fan only spins when it’s needed.

Slay the cable kraken
The modular cable set allows you to use only the cables you need for your particular set of components. There’s no more unwieldy mythical tentacled monstrosity of unused cables to clutter up the inside of your case.
High efficiency for lower energy consumption and less heat generation

Efficiency is the measurement of how well a power supply converts the AC power from your outlet to the DC power used by your PC’s components. If your power supply isn’t efficient, it will generate more heat, which requires more cooling and more fan noise. And, it might even affect your power bill.

HX Series PSUs are among the most efficient on the market. They help keep your PC cool and quiet, and your power bill down.

Package contents

  • HX850 power supply
  • Modular cable pack
  • Accessory bag with mounting hardware, cable ties, and case badge
  • Installation Guide


  • Fully compatible with 4th generation Intel® Core™ series processors
  • Conforms to ATX12V v2.31 and EPS 2.92 standards, and is backward compatible with the ATX12V 2.2 and ATX12V 2.01 standards


  • A dedicated single +12V rail offers simple configuration and maximum compatibility with the latest graphics cards and other components
  • An ultra-quiet, 140mm double ball-bearing fan delivers excellent airflow with exceptionally low noise levels by varying fan speed in response to temperature
  • 80 PLUS Gold certified, delivering up to 90% energy efficiency under real-world load conditions
  • Active Power Factor Correction (PFC) with PF value of 0.99
  • Universal AC input from 90~264V
  • Over-voltage, under-voltage, over-current, and short circuit protection provide maximum safety for your critical system components
  • Engineered to meet maximum power output at a server-grade 50°C temperature rating.
  • High-quality capacitors provide uncompromised performance and reliability
  • A seven year warranty and lifetime access to Corsair's legendary technical support and customer service
  • Safety Approvals:  cTUVus, CE, CB, FCC Class B, TÜV, CCC, C-tick

Specifications    [ Edit | History ]
Dimension150mm x 86mm x 200mm
Power850 Watts
80 PlusGold
ATX Connector1
EPS Connector2
PCI-E Connector6
4 Pin Peripheral Connector12
SATA Connector12
Floppy Connector2
MTBF100,000 hours

Corsair CP-9020032-NA / CP-9020032-US Customer Reviews

Product reviews on are screened for relevance and inappropriate content. Reviews may contain inaccurate information about the product. If there is a discrepancy, please use the Flag this Review link located beside each review. Reviews are not an endorsement expressed by, but opinions from customers based on their own experience with a product. We do not recommend you make purchasing decisions based on facts or opinions expressed regarding Corsair CP-9020032-NA / CP-9020032-US reviews.
Captain Mazda
Experience: 3 Years
Quiet, efficient, powerful
Not fully modular
Cables are not sleeved
Tight cables make it difficult for some drive bays
I have this PSU powering up various systems, currently an i7 4790K and SLI GTX 770 setup. The power is efficient and consistent and the fan is silent. If it weren't for the semi-modular design or the horrible cables, this would be a perfect PSU.

Experience: 2 Months
 Verified Owner
Gold rating
Very good product
Recommended for gaming/workstation machine. Lot of power to feed GPU and CPU. Overclocker's recommandation. You won't find better in this category.

Experience: 4 Weeks
 Verified Owner
- the non-modular cables are few in count and are necessary for any system build
- excellent build quality, as expected from Corsair
- good quality sleeving, though there is room for improvement
- an abundance of extra cables
- unexpected, but the cables came in a neat little pouch
- gotta love that 'new PSU smell' ;)
- none
I had faith in Corsair when they first launched their HS1A headset, though it disappointed me in the end. I did not give up, and now they're selling some of the most well built products in the industry. I am extremely pleased with this purchase ($159) and look forward to seeing new releases from Corsair in the future.

Experience: 3 Weeks
 Verified Owner
Silencieux, Beaucoup de câbles inclus. Quiet operation, Lots of modular cable
SEMI-modulaire. / SEMI modular.
Very good product! / Très bon produit! 4 Câbles non modulaires: EPS12V(4/8 broches), Câble ATX(20/24 broches) et 2 PCI-E.

Experience: 2 Years
Mine has been sitting mostly in a box for a long time. I just put it into a system and all is fine. Basically what everyone else said about build quality, noise and performance....
That short 8 pin PCIE power cable and no included extension. On my HAFX tower and Sabertooth, it just fits, running over the top of the videocard and looking stupid.
I just built a new system with a new but "old stock" PS. If I'd taken trouble to read reviews, I'd have ordered an extension for the 8 pin cable... My problem...

I've had a lot of good luck with all kinds of Corsair PSU's and have a lot of faith in them. Out of curiosity, I dug up the invoice for my "spare" PSU bought on sale in Jan 2011 - $169.00 on sale then. It appears that decent PSU's hold their price pretty well compared to most other components..

Experience: 2 Days
 Verified Owner
very quiet for the power
long shipping with fedex
really good for a gtx 660ti i'd love it easy to install it is a good product I recommand it for every one who build a gaming desktop with big video card.and good looking device

Experience: 1 Weeks
 Verified Owner
Not too big or heavy. Works great. Plenty of cables included, mostly modular, mostly long enough, quality wiring/sleeves. Build quality is fantastic, it feels like a very professionally-made product. Very quiet, doesn't seem to get hot.
8-pin CPU power connector is really short, in a HAF XM with a Gigabyte Z77X-UD3H and a Zalman CNPS12X HSF I could barely make it reach all the way and using cable management/routing it behind the MB was out of the question, so that was really unpleasant. Just an extra inch would have been great, the other cables are fine.

Not entirely modular--8-pin CPU and 24-pin ATX connectors were not removable, surprisingly neither were 2 of the 6+2-pin PCI-E connectors, although as you have to use all of these anyways it didn't bother me really.
Despite the short 8-pin connector and the handful of non-modular cables this is all-around a spectacular PSU. Although I just got it, my old Corsair HX520 has lasted absolutely fine for over 5 years now and is still kicking. Corsair builds excellent, high-quality stuff; you can really feel the quality of this thing.

Experience: 1 Days
 Verified Owner
Modular, enough power for everything.
Not 100% modular.
Good warranty and trustworty brand. I would buy again.

Experience: 2 Weeks
 Verified Owner
Many connectors
The CPU 8Pin length could be longer
Modular connections look somewhat average
I preferred this over the Seasonic M12 850W, I have both. Have enough 6+2pins for two, three videocards. Good build and feel heavy, the modular connections are flat, not braided. The CPU 8pin connector length is adequate but too short if you want to run behind the case. Include and extension for the 8pin would be nice.

Experience: 13 Days
 Verified Owner
stable 80+ silver rating
lots of power
none noticed thus far
Having purchased and used a Corsair HX620 from in the past I had no hesitation in purchasing the HX850. My HX620 has never given me any problems for that last 4 years so I was confident that the HX850 would meet all my needs for the next 4 with its power and stability.

 NCIX Forum Messages

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Messages about Corsair Professional HX850W 850W ATX 12V 70A 24PIN ATX Modular Power Supply Active PFC 140mm Fan

ETA on Stock? (DevArmaya- Aug 09, 13, 12 Replies) Read this message
OK ASUS P5 Pro (Laszlo_C- Aug 13, 12, 1 Replies) Read this message
Warranty? - I'm Confused (Kolby_G- Apr 01, 11, 2 Replies) Read this message
Just wondering if this can power my rig? (Warpshade- Dec 23, 10, 3 Replies) Read this message
fit antec P180? (Mandor- Nov 11, 10, 2 Replies) Read this message
Power cord for this. (FlaasH- May 20, 10, 1 Replies) Read this message
Patiently Waiting (AMD_PBz- Mar 20, 10, 2 Replies) Read this message
Ouch ETA Early July. (K4mpF3r- Jan 23, 10, 10 Replies) Read this message
Another one of those "enough power" questions... (ENiGMATiC- Nov 30, 09, 1 Replies) Read this message
Corsair 850W ProSeries Modular PSU in Stock (Terren - Oct 01, 09, 15 Replies) Read this message
SLI GTX 275 (Curtis_B- Oct 01, 09, 11 Replies) Read this message
5 year warranty? wasn't it 7 years? PSU (Shane_P- Sep 29, 09, 1 Replies) Read this message
Noise level? (Chickenfeed- Aug 09, 09, 6 Replies) Read this message
Fit in a Antec 900/902 case? (LMB- Jul 08, 09, 6 Replies) Read this message
Corsair HX850 Review (K4mpF3r- Jun 11, 09, 2 Replies) Read this message

Post a New Message  |    All Messages       Browse NCIX Forums

Forum messages are not reviewed and may not contain accurate information about a product. Message contents are opinions from customers based on their own experience with a product. We do not recommend you make puchasing decisions based on Forum messages.
Reviews from the Web

Below are reviews found on other web sites for this product submitted by customers.

Comment: The HX850W power supply for Corsair is truly amongst the best.
Posted by: BernardP @11/12/10
Comment: From the team across the Atlantic. Another great review
Posted by: Paul_B @03/16/10
Comment: Bjorn3D review: Corsair makes some of the best PSU's, and have always combined sheer power with great efficiency. The is modular and outputs 70A on a single 12v rail. It will be your PSU for a very long time.
Posted by: BernardP @10/16/09
Comment: Hardware Canucks - Dam Good
Posted by: pnomolos @08/23/09
Comment: Corsair HX850 PSU Review
Posted by: LMB @06/28/09
Comment: Solid PSU, with a good warranty and 90% plus efficiency.
Posted by: Randy_J @06/14/09
Comment: Nice review.
Posted by: Notree (bobby_c) @06/11/09
Submit a review link   |   Latest 30 reviews
Product Warranty
First 30 days limited warranty through The remainder of the 3 year warranty is provided directly by the manufacturer.

Corsair's DRAM memory modules all carry a lifetime warranty. The Flash Voyager, Flash ReadOut, TurboFlash, Flash Survivor and Mini Flash products all have a warranty for the expected normal life of the product (10 years). The Flash Padlock has a warranty of 3 years. The HX, TX, and VX Series of Power Supplies have a 5 year warranty, and Liquid Cooling products carry a one year warranty. In general, this means Corsair products are guaranteed to operate, as specified by their datasheet, and in the operating environment for which they were intended, for the life of the product or the extent of the warranty.

For additional information and technical assitance, please visit Corsair Memory's support site at:

Corsair Technical Support

Phone:  1-800-205-7657

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While uses all reasonable efforts to include accurate and up-to-date information on the Site, makes no warranties or representations as to the Site's accuracy. assumes no liability or responsibility for any errors or omissions in the content on the Site. warrants product(s) to be in good working condition and free from defects in material and workmanship for a period of one (1) year for OEM packages, and for thirty (30) days for RETAIL packages, from the original Invoice date unless otherwise restricted below or by the manufacturer's own warranty policy. Defective returns and warranty service will be replaced, exchanged or repaired at's sole discretion, and based on vendor's policy.

NON-DEFECTIVE merchandise returns may be accepted on some items ONLY within 15 days of the Invoice date, at's discretion. All NON-DEFECTIVE returns are subject to a 15% restocking fee. No refunds will be issued for blank media, digital cameras (and accessories), opened software, printers, printer supplies, paper, projectors (and accessories), appliances, handhelds, PDAs, notebook computers, special order computers and special order items.

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