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header-product Power supply unit CORSAIR RMx Shift Series RM850x 850 W, 24‑pin ATX, 80 PLUS Gold, Black
180.49 €

Power supply unit CORSAIR RMx Shift Series RM850x 850 W, 24‑pin ATX, 80 PLUS Gold, Black

CORSAIR RMx Shift RM850x 850 W power supply Photo 1
CORSAIR RMx Shift RM850x 850 W power supply Photo 2
CORSAIR RMx Shift RM850x 850 W power supply Photo 1
CORSAIR RMx Shift RM850x 850 W power supply Photo 2
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Power supply unit CORSAIR RMx Shift Series RM850x 850 W, 24‑pin ATX, 80 PLUS Gold, Black

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Power supply unit CORSAIR RMx Shift Series RM850x 850 W, 24‑pin ATX, 80 PLUS Gold, Black

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Short description

Corsair RMx Shift Series RM850x is an ATX power supply unit delivering 850 W total power with 24‑pin ATX motherboard connector and 80 PLUS Gold efficiency. It supports 100–240 V AC input (47–63 Hz), features an active 140 mm fan for cooling and black finish. Suitable for desktop PC builds requiring reliable, efficient power delivery.
Available for order: 34 pcs.
Warranty: 2 Years
SKU: 12373057
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.79 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
06.08.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
11.08.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 2.30 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa
11.08.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.79 €
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Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment
36 months installment: from 5.01 euros per month
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Product information

Description

The CORSAIR RMx Shift Series RM850x is an 850 W ATX power supply designed for desktop PC builds that need reliable and efficient power delivery. It supports 100–240 V AC input at 47–63 Hz and uses a 24‑pin ATX motherboard connector. The unit is finished in black and includes an active 140 mm cooling fan for thermal management.

Advantages

This PSU uses fully modular Type-5 connectors with side-mounted, compact connections to simplify cable routing and reduce clutter inside the case. It includes a native 12V‑2x6 GPU power cable with a dual-color connector for a clear visual confirmation of a secure GPU-side connection. The design meets ATX 3.1 and PCIe 5.1 requirements, employs a resonant LLC topology with DC-DC conversion, and uses 105°C-rated Japanese electrolytic capacitors for stable output. Cybenetics Gold certification indicates up to 89% overall efficiency, lower noise and cooler operating temperatures. The unit also offers a manual fan speed control knob and Zero RPM Mode for near-silent operation at low to medium loads.

Suitable for

  • Mainstream and high-performance desktop PC builds requiring up to 850 W continuous power
  • Systems using modern GPUs that require 12V‑2x6 (dual 6-pin) connections or PCIe 5.1 power standards
  • Builders who prefer tidy cable management via fully modular Type-5 connectors and flexible, low-profile cables

When it may not be suitable

This power supply provides up to 850 W and is not suitable for systems that require higher continuous power budgets—such as multi-GPU servers or extreme workstation configurations that exceed 850 W. Also, while the included native 12V‑2x6 GPU cable supports many modern graphics cards, some GPUs or adapter setups may require different connector types or additional power delivery solutions.

Key specifications

  • Total power: 850 W
  • Input voltage: 100–240 V AC, 47–63 Hz
  • Efficiency: Cybenetics Gold (up to ~89% overall efficiency)
  • Form factor / connector: 24‑pin ATX motherboard connector
  • Modularity: Fully modular with Type-5 side-mounted connectors
  • GPU cable: Native 12V‑2x6 dual-color connector cable
  • Cooling: 140 mm Fluid Dynamic Bearing fan with Zero RPM Mode and manual fan speed control knob
  • Capacitors: 105°C-rated Japanese electrolytic capacitors
  • Topology: Resonant LLC with DC-DC conversion
  • Colour: Black

How to use

Install the RM850x into a standard ATX-compatible case and connect the 24‑pin ATX motherboard cable to the motherboard. Attach only the modular cables you need using the Type-5 side-mounted connectors to reduce cable clutter. Use the included native 12V‑2x6 GPU cable to power compatible graphics cards, ensuring the dual-color connector seats fully for visual confirmation. Adjust the fan behaviour with the manual fan speed knob if you need extra airflow, or leave the unit in Zero RPM Mode for quieter operation at lower loads.

What to consider before purchase

  • Ensure your system’s total power draw does not exceed 850 W under typical or peak load
  • Confirm your GPU and other components are compatible with the native 12V‑2x6 GPU cable or that you have any required adapters
  • Verify your PC case has space and mounting support for a standard ATX PSU and a 140 mm fan exhaust path
  • Check that Cybenetics Gold efficiency and the specified capacitor ratings meet your expectations for noise and longevity

Usage recommendations

For optimal performance and cable management, install only the modular cables required for your build, route Type-5 cables along the case edges, and confirm the dual-color GPU connector is fully seated. Use the manual fan knob to increase airflow during heavy loads and return to Zero RPM Mode for quieter idle operation.

Specifications

80 PLUS certification:
80 PLUS Gold
Power supply unit (PSU) form factor:
ATX
Purpose: What the product is used for.
PC
Motherboard power connector: The way in which the motherboard is connected to the power supply.
24-pin ATX
AC input voltage: The voltage of the AC electricity that is inputted into the product.
100 - 240
Total power: The total power that is needed by the device, or the total power produced by the device.
850 W
All features

Weight & dimensions

Weight: Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
2.89 kg
Height: The measurement of the product from head to foot or from base to top.
86 mm
Depth: The distance from the front to the back of something.
150 mm
Width: The measurement or extent of something from side to side.
160 mm

Design

On/off switch: The button which is pressed to switch the device on or off.
Yes
Number of fans: The quantity of fans (apparatus with rotating blades that creates a current of air for cooling or ventilation).
1 fan(s)
Fan diameter: The size of the fan, measured by the distance from one side of the fan to the other, via a straight line going through the middle of the fan.
140 mm
Cooling type: The method used to cool the device or to cool the air around the device.
Active
Product colour: The colour e.g. red, blue, green, black, white.
Black

Performance

Mean time between failures (MTBF): Statistical model used to indicate product/mechanism reliability; expressed in hours and percentage of duty cycle. This number (in hours) does not indicate the mean time before failure for a single unit/mechanism.
100000 h
Bearing technology:
FDB
ATX version: ATX (Advanced Technology eXtended) is a motherboard form factor specification developed by Intel in 1995. The specification defines the key mechanical dimensions, mounting point, I/O panel, power and connector interfaces between a computer case, a motherboard and a power supply. There are many versions of ATX including ATX12V 1.x and ATX12V v2.3.
3.1
80 PLUS certification:
80 PLUS Gold
Power supply unit (PSU) form factor:
ATX
Purpose: What the product is used for.
PC

Ports & interfaces

Cabling type:
Fully-Modular
PCI Express connector:
Yes
PCI Express power connectors (12+4 pin):
1
PCI Express power connectors (12+4 pin) cable length:
650
PCI Express power connectors (6+2 pin):
2
EPS power connector (4+4 pin):
Yes
SATA power cable length:
100, 700, 500
Number of SATA power connectors:
9
Number of PATA power connectors:
4
Motherboard power cable length:
610 mm
Motherboard power connector: The way in which the motherboard is connected to the power supply.
24-pin ATX

Power

Max output current (+5Vsb):
3 A
Max output current (+5V):
20 A
Max output current (+12V):
70.8 A
Max output current (+3.3V):
20 A
Combined power (+5Vsb):
15 W
Combined power (+5V):
120 W
Combined power (+12V):
850 W
Combined power (+3.3V):
120 W
Input current:
10 - 5
AC input frequency:
47 - 63
AC input voltage: The voltage of the AC electricity that is inputted into the product.
100 - 240
Total power: The total power that is needed by the device, or the total power produced by the device.
850 W

Description

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Customer reviews

Customer questions

FAQ

How much does the CORSAIR RMx Shift RM850x 850 W power supply cost, and is it available for purchase?

The price is 180.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 34 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 06.08.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

Can CORSAIR RMx Shift RM850x 850 W power supply be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the CORSAIR RMx Shift RM850x 850 W power supply online, and the application process is as simple as possible:
  • Select the product on the website and add it to your cart;
  • When placing your order, choose the payment method “Installments”;
  • Fill in the required details for the lending partner;
  • Receive a decision within a few minutes.
For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All CORSAIR products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized CORSAIR service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: 80 plus certification, power supply unit (psu) form factor, purpose, motherboard power connector, ac input voltage, total power, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.