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header-product Power Supply Unit Silverstone SST-EX850R-PM 850 W
299.49 €

Power Supply Unit Silverstone SST-EX850R-PM 850 W

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Short description

The Silverstone SST-EX850R-PM is an 850 W SFX power supply designed for PCs. It features a 20-pin ATX connector, active cooling with a 13.5 cm fan, and a wide AC input voltage range of 180-264 V. The PSU includes SATA power cables of varying lengths (100, 200, 300 mm) and has a compact form factor with dimensions of 125 mm x 100 mm x 63.5 mm. The FDB bearing technology ensures quiet operation, making it an excellent choice for high-performance systems.
Available for order: 1 pcs.
Warranty: 2 Years
SKU: 8152495
Manufacturer: SILVERSTONE
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1.89 €

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
16.07.2026 {{selectedOffer.officeDeliveryString}}
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21.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 1.60 kg)
Parcel couriers
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Product information

Description

The Silverstone SST-EX850R-PM 850 W is a compact SFX power supply designed for high-performance PCs. It supports the Gen5 12VHPWR PCIe connector and complies with the Intel SFX 12V V4.0 specification. The unit delivers a single powerful +12V rail, uses all-Japanese electrolytic capacitors and carries Cybenetics Platinum efficiency certification. Fully modular flat array cables and a 135 mm FDB cooling fan with intelligent stop and delayed shut-off provide flexible installation and quiet operation.

Advantages

The PSU provides an 850 W output with a robust single +12V rail suited for future high-end GPU upgrades and overclocking. It includes modern connectivity such as the Gen5 12VHPWR PCIe connector and a 20-pin ATX motherboard connector. High-quality Japanese electrolytic capacitors and Cybenetics Platinum efficiency support reliable, efficient performance while the fully modular flat cables simplify cable management. The ultra-silent 135 mm Fluid Dynamic Bearing fan with intelligent stop reduces noise during low loads.

Suitable for

  • Compact SFX gaming PCs and small-form-factor workstations
  • High-performance builds requiring an 850 W single +12V rail
  • Systems with modern Gen5 12VHPWR PCIe graphics cards
  • Environments where quiet cooling and modular cabling are desired

Key specifications

  • Total power: 850 W
  • Efficiency: 91% (Cybenetics Platinum)
  • Connector: Gen5 12VHPWR PCIe; 20-pin ATX motherboard connector
  • Form factor: SFX; dimensions 125 x 100 x 63.5 mm
  • Fan: 135 mm Fluid Dynamic Bearing (FDB) with intelligent stop
  • Cabling: Fully modular, flat array cables; SATA power cable lengths: 100 / 200 / 300 mm
  • Capacitors: All Japanese electrolytic capacitors
  • Weight: 1.6 kg
  • Input voltage range: 180–264 V AC
  • Color: Black
  • Protections: Over-current, over-power, over-voltage, short circuit, under-voltage, over-temperature

How to use

Install the Silverstone SST-EX850R-PM into an SFX-compatible case following the case and motherboard manuals. Connect the 20-pin ATX cable to the motherboard and use the Gen5 12VHPWR PCIe connector for supported graphics cards. Attach SATA and peripheral cables as required using the fully modular connectors. Ensure the AC input is within the specified 180–264 V range before powering on. The fan will operate automatically and enter intelligent stop mode at low load; delayed shut-off prevents abrupt stops.

Usage recommendations

Use this PSU in systems that match its SFX form factor and power requirements. Verify compatibility of the Gen5 12VHPWR connector with your GPU and keep ventilation unobstructed to maintain cooling and prolong component life.

Specifications

Total power:
850 W
Efficiency:
91 %
Motherboard power connector:
20-pin ATX
80 PLUS certification:
No
Fan diameter:
135 mm
Weight:
1.6 kg
Product colour:
Black
All features

Power

Total power:
850 W
Efficiency:
91 %
Power Factor Correction (PFC) type:
Active
Power protection features:
Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage
Power factor:
0.9
Combined power (+3.3V):
100 W
Combined power (+12V):
850 W
Combined power (+5V):
100 W
Max output current (+3.3V):
20 A
Max output current (+12V):
70.8 A
Max output current (+5V):
20 A
Max output current (-12V):
0.3 A
Max output current (+5Vsb):
3 A
AC input frequency:
47 - 63
AC input voltage:
180 - 264

Ports & interfaces

Motherboard power connector:
20-pin ATX
Floppy disk drive connector:
Yes
PCI Express connector:
Yes
Floppy drive power connector:
1
Number of SATA power connectors:
8
Peripheral (Molex) power connectors (4-pin):
3
CPU power connector (4+4 pin):
Yes
PCI Express power connectors (6+2 pin):
16
Cabling type:
Fully-Modular
Motherboard power cable length:
300 mm
SATA power cable length:
100, 300, 200
CPU power cable length:
400 mm
Peripheral (Molex) power cable length:
200, 300
Floppy disk drive cable length:
100 mm
PCI Express power connectors (12+4 pin):
1

Performance

Purpose:
PC
80 PLUS certification:
No
Mean time between failures (MTBF):
100000 h
Bearing technology:
FDB
Silent mode:
Yes
Power supply unit (PSU) form factor:
SFX

Design

Fan diameter:
135 mm
Number of fans:
1 fan(s)
Cooling type:
Active
Product colour:
Black

Weight & dimensions

Weight:
1.6 kg
Height:
63.5 mm
Width:
125 mm
Depth:
100 mm

Operational conditions

Operating temperature (T-T):
0 - 50

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Customer reviews

Customer questions

FAQ

How much does the Power Supply Silverstone SST-EX850R-PM cost, and is it available for purchase?

The price is 299.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 16.07.2026 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 Power Supply Silverstone SST-EX850R-PM 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 Power Supply Silverstone SST-EX850R-PM 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 SILVERSTONE 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 SILVERSTONE 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: total power, efficiency, 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.

Where can I download the instructions for Power Supply Silverstone SST-EX850R-PM?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.
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