# Power supply unit CORSAIR RMx Shift Series RM850x 850W ATX 24-pin, 80 PLUS Gold, Black, 140mm fan

**URL:** https://aio.lv/en/product--corsair-cp-9020299-eu--11666839
**Data updated:** 2026-01-08 20:08 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** CORSAIR
**Manufacturer code:** CP-9020299-EU
**EAN:** 840440484974
**Warranty:** 3 Years
**Availability:** Available for order
**Price:** 152.99 €
**Prices and availability valid until:** 2026-08-02 23:59
**Price without VAT (21%):** 126.44 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--corsair-cp-9020299-eu--11666839

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Tuesday | free |
| Pickup points | 10.07.2026 | 1.89 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

The CORSAIR RMx Shift Series RM850x is an 850 W ATX power supply for desktop PCs, featuring 24-pin motherboard connector and active 140 mm cooling. It supports 100–240 V AC input and 47–63 Hz frequency, with SATA cable lengths of 100, 500 and 700 mm and a 61 cm motherboard cable. 80 PLUS Gold efficiency ensures reliable, energy-efficient power delivery.

## Long description

The CORSAIR RMx Shift Series RM850x is an 850 W ATX power supply designed for desktop PCs. It delivers efficient, stable power with 80 PLUS Gold efficiency and supports 100–240 V AC input at 47–63 Hz. The unit includes a 24-pin ATX motherboard connector, fully modular Type-5 cable connections, and an active 140 mm fluid dynamic bearing fan for cooling. Cable lengths include SATA runs of 100 mm, 500 mm and 700 mm and a 610 mm motherboard cable.
Advantages
The RM850x combines Cybenetics Gold certification (up to 89% overall efficiency) with ATX 3.1 compliance and PCIe 5.1 readiness for modern graphics cards. Its side-mounted Type-5 connectors and fully modular cable system reduce clutter and simplify cable management. Included are ultra-flexible debossed-PVC cables and low-profile combs for a tidy build, and a manual fan speed control knob that lets you override Zero RPM Mode to increase airflow when needed.
Suitable for
High-performance gaming PCs with modern GPUs (NVIDIA GeForce RTX 50 Series and similar)
Workstations requiring stable 12V power and ATX 3.1 features
Compact or clean builds where cable management and reduced clutter are important
Systems needing near-silent operation at low-to-medium loads
Key specifications
Wattage: 850 W
Efficiency: 80 PLUS Gold; Cybenetics Gold certified (up to ~89% efficiency)
ATX standard: ATX 3.1 compliant
PCIe: PCIe 5.1 ready; native 12V-2x6 GPU power cable included
Connectors: 24-pin ATX motherboard connector; fully modular Type-5 connectors
Fan: 140 mm fluid dynamic bearing, Zero RPM Mode, manual fan speed control knob
Capacitors: 105°C-rated Japanese electrolytic capacitors
Input voltage / frequency: 100–240 V, 47–63 Hz
Color: Black
How to use
Install the RM850x in a compatible ATX case and connect the 24-pin ATX cable to the motherboard. Use the fully modular Type-5 connectors to attach only the cables required for your build, including the native 12V-2x6 GPU cable for supported graphics cards. Route the included debossed-PVC cables with the low-profile combs for a neat layout. Adjust the fan behavior with the manual fan speed control knob when additional cooling or airflow is required; otherwise allow Zero RPM Mode to operate for near-silent performance at light loads.
Usage recommendations
For optimal reliability, ensure adequate case ventilation and use the manual fan override only when sustained higher airflow is needed. Verify GPU compatibility with the native 12V-2x6 connector and follow manufacturer instructions when connecting power cables.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 850 W |
| Combined power (+3.3V) | 120 W |
| Combined power (+12V) | 850 W |
| Combined power (+5V) | 120 W |
| Combined power (+5Vsb) | 15 W |
| Max output current (+3.3V) | 20 A |
| Max output current (+12V) | 70.8 A |
| Max output current (+5V) | 20 A |
| Max output current (+5Vsb) | 3 A |
| Input current | 10 - 5 |
| AC input frequency | 47 - 63 |
| AC input voltage | 100 - 240 |

### Ports & interfaces

| Feature | Value |
|---|---|
| Motherboard power connector | 24-pin ATX |
| PCI Express connector | Yes |
| Number of SATA power connectors | 9 |
| PCI Express power connectors (6+2 pin) | 2 |
| Cabling type | Fully-Modular |
| Number of PATA power connectors | 4 |
| Motherboard power cable length | 610 mm |
| SATA power cable length | 500, 700, 100 |
| EPS power connector (4+4 pin) | Yes |
| PCI Express power connectors (12+4 pin) | 1 |
| PCI Express power connectors (12+4 pin) cable length | 650 |

### Performance

| Feature | Value |
|---|---|
| Purpose | PC |
| 80 PLUS certification | 80 PLUS Gold |
| Mean time between failures (MTBF) | 100000 h |
| Bearing technology | FDB |
| ATX version | 3.1 |
| Power supply unit (PSU) form factor | ATX |

### Design

| Feature | Value |
|---|---|
| Fan diameter | 140 mm |
| Number of fans | 1 fan(s) |
| Cooling type | Active |
| On/off switch | Yes |
| Product colour | Black |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 2.89 kg |
| Height | 86 mm |
| Width | 160 mm |
| Depth | 150 mm |

## FAQ

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

The price is 152.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 195 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 Tuesday 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: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can CORSAIR RMx Shift RM850x 850W PSU be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: total power, motherboard power connector, 80 plus certification, fan diameter, weight, product colour, 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.

## Image

https://aio.lv/img/cache/product/11666839/66968738_large.webp