Corsair HX850i 850W Full Modular Power Supply

850W Corsair HX850i, Full Modular, 80PLUS Platinum, SLI/CrossFire, Single/Multi Rail, 70.8A, 140mm Fan, ATX PSU

Scan code: LN58899 Manufacturer code: CP-9020073-UK Request call
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Delivery options £5.48 By DPD On 27th Jul 2017 DPD Delivered to your specified address. Receive SMS with one-hour delivery window. £4.79 Collect from local shops UPS and DPD Pickup Collect your parcel from your newsagents, petrol stations and convenience stores. Free Collect Instore Q-Collect Place your order online and collect from our Bolton store with Q-Collect. Weekend, timed and European delivery options are available at checkout ScanProtect protection ScanProtect Protect against installation damage for 28 days.More
Frequently Bought Together
Product Overview HXi Series power supplies give you extremely tight voltage control, virtually silent operation, and a fully modular cable set. With all Japanese 105°c capacitors, they’re a great choice for high performance PCs where reliability is essential. 80 PLUS Platinum efficiency reduces operating cost and excess heat, and together with Zero RPM Fan Mode technology, gives you virtually silent operation.

With Corsair Link Digital support, you can monitor power supply performance, toggle single rail or multi rail mode, and control fan speed directly from your desktop. And, the fully modular, low profile cable set makes builds and upgrades easy, with clean, great-looking results. Features • Corsair Link. Integration for monitoring performance and adjustment of fan speed and multi-rail/single rail mode.
• 80 PLUSR Platinum efficiency, delivering 92% energy efficiency at real world load conditions.
• ZeroRPM mode for fanless operation at low loads and outstanding noise reduction.
• 140mm thermally controlled fluid dynamic bearing fan spins up as needed.
• Fully Modular low profile cables for easy installation, less clutter, and helps maximize airflow through your computer¡¦s chassis.
• Engineered to meet maximum power output at a server-grade 50C temperature rating.
• Fan self-test switch to determine fan functionality even before installation.
• The latest ATX12V v2.4 and EPS 2.92 standards and is backward compatible with ATX12V 2.2, 2.31 and ATX12V 2.01 systems.
• 4th generation IntelR Core. processor Ready (Intel Haswell and Z87 motherboards).
• Over-voltage protection, under-voltage protection, and short circuit protection, over power protection, over temperature protection provide maximum safety to your critical system components.
Size ATX
Edition HX850i
Wattage 850 W
80 PLUS Certification 80 PLUS Platinum
Max. Efficiency 92 %
Cooling Fan
Fans 1 x 140mm
Internal +12V Rails Single/Multi Rail
Rail 1 +12V 70.8 A
Rail 2 +12V N/A
Rail 3 +12V N/A
Rail 4 +12V N/A
Rail 5 +12V N/A
Rail 6 +12V N/A
Max. Combined Output +12V 70.8 A
Modular Yes
Modularity Full Modular
SLI/CrossFire Yes
EPS 12V Yes
Motherboard Connector 20+4-pin
  • 2 x 4+4-pin CPU +12V (EPS)
  • 12 x 4-pin Molex
  • 6 x 6+2-pin PCIe
  • 2 x FDD Power
  • 12 x SATA
Dimensions 150 x 86 x 180 mm (WxHxD)
Package Type Retail

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120 months
Return to base
RTB Period:
120 months
Manufacturer Contact Details
0871 472 4747
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850W Corsair HX850i, Full Modular, 80 PLUS Platinum, SLI/CrossFire, Single/Multi Rail, 70.8A, 140mm Fan, ATX PSU is rated 4.7 out of 5 by 6.
Rated 5 out of 5 by from Great efficiency, poor cabling. I would recommend this but I thought the plastic cables felt a bit cheap and could have done with being braided or have braided sleeving. Overall I'm happy with it though and the PSU often reaches 92% efficiency under load.
Date published: 2016-10-30
Rated 5 out of 5 by from Solid, quiet power supply This is a sleek, efficient and quiet power supply. There is an abundance of cables for a great deal of flexibility in builds. The cables are also of a good length too, and there was cable length to spare in a mid-tower build. The cables are nicely braided, and reasonably flexible to get through grommets at awkward angles. The connections to the power supply feel solid and are very easy to use. The unit is silent, as far as I am concerned, with the fan spinning only sparingly in normal use. There is no detectable coil whine. The USB link feature is a neat gimmick, and can display power usage and calculated efficiency, which usually shows in excess of 90%. Overall a solid choice for power supply, especially for potential 2-card SLI setups.
Date published: 2016-08-22
Rated 4 out of 5 by from Good quality, fair price - No whine! A PSU that is much cheaper than many others but ultra quiet. This PSU gave me no coil whine. Build quality is excellent, very easy to install and connect.
Date published: 2016-05-19
Rated 5 out of 5 by from Excellent product. Quite and powerful, easy to install Does everything a PSU should do. The modular setup is really good, You only have to use the cables you actually need. The cables are thin and flexible. I would recommend this product
Date published: 2015-05-24
Rated 4 out of 5 by from Pretty Good. Had to get a new power supply as my computer was having some serious problems, so this was first on the list as voltages were all over the place. The unit it self is nice and easy to fit, feels solid and give the impression it is built to last. The leads are easy to fit into the power supply itself, the down side was fitting them to the motherboard, the main power lead is stiff and trying to get it into the position you want a little awkward but not impossible, the other leads are easier, but by the time you have what you need connected you are repositioning them as they want to go back into the shape that they have been sitting in, when they were packaged and that tended to be to close to fan blades. Now I wont lie this has been the first time I have ever had to do this and there are more reviews to come as this was one of many faults that needed sorting, but I would recommend this product as if you get a more up to date case that would help with the positioning of the cables, but the ease of fitting them was a big plus. One thing to take into consideration is the plugs that connect to the motherboard, when connecting them they don't give the feeling that they have 'locked' into place but after checking several times they were all okay and everything powered up on first time of asking.
Date published: 2015-02-26
Rated 5 out of 5 by from Excellent unit. A sturdy well made solid unit. Multiple leads. Great value and quiet as you like. Would highly recommend.
Date published: 2015-01-17
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Corsair HX850i 850W Full Modular Power Supply
Corsair HX850i 850W Full Modular Power Supply