Power Supply Unit Silverstone ST45SF

Name: Power Supply Unit Silverstone ST45SF SST-ST45SFV3.0
Brand: SILVERSTONE
SKU: 227352
Price: 101.99 EUR
Availability: InStock

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Power Supply Unit Silverstone ST45SF 450 W

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Short description

The Silverstone ST45SF is a compact SFX power supply unit with a total power of 450 W. It features a 20+4 pin ATX motherboard connector and supports AC input voltage from 90 to 264 V. With an 80 PLUS Bronze certification, it ensures efficient power delivery. The active cooling system with a 9.2 cm fan keeps the unit cool, while its dimensions (125 mm x 100 mm x 63.5 mm) make it ideal for small form factor PCs. SATA power cables are available in lengths of 220, 100, and 300 mm.

Available for order: 1 pcs.

Warranty: 2 Years

SKU: 227352

Manufacturer: SILVERSTONE

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2b. Kengaraga str., Riga, Latvia, LV-1063

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From 4.99 € (Weight: 1.67 kg)

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Product information

Description

The Silverstone ST45SF is a compact SFX power supply unit delivering 450 W of continuous power. Designed for small form factor systems, it includes an ATX adapter bracket for compatibility with smaller ATX cases. The unit is 80 PLUS Bronze certified and supports wide AC input (90–264 V). It is available in versions rated for continuous 24/7 operation at 50°C (V2.0) or at 40°C with improved noise and +12V output (V3.0).

Advantages

The ST45SF combines SFX compactness with features typically found in larger PSUs: stable single +12V rail with up to 36 A, Active PFC, and 80 PLUS Bronze efficiency (approximately 82–85% across typical loads). It provides dedicated PCI-E connectors (one 8‑pin and two 6‑pin) for discrete GPU support and comes with a temperature‑controlled silent fan (80 mm for V2.0, 92 mm for V3.0) to balance cooling and acoustics. The included ATX bracket increases installation flexibility.

Suitable for

Small form factor desktops and mini-ITX builds that require an SFX power supply
Compact ATX cases using an SFX-to-ATX adapter bracket
Home office PCs and gaming desktops needing a reliable 450 W PSU

Key specifications

Total power: 450 W
80 PLUS certification: Bronze (approx. 82–85% efficiency at 20–100% load)
Motherboard connector: 20+4 pin ATX
+12V: single rail, up to 36 A
Fan: temperature‑controlled (80 mm on V2.0, 92 mm on V3.0)
AC input voltage: 90–264 V
Connectors: single PCI‑E 8‑pin and two PCI‑E 6‑pin
Dimensions: 125 mm × 100 mm × 63.5 mm

How to use

Install the ST45SF into an SFX-compatible chassis or fit it into a smaller ATX case using the included adapter bracket. Connect the 20+4 pin ATX cable to the motherboard and attach required peripheral cables (SATA, PCI‑E, etc.) to the components. Ensure proper airflow within the case so the temperature‑controlled fan can operate effectively. Use the unit within the specified ambient temperature rating for the chosen version (V2.0: 50°C; V3.0: 40°C) for continuous 24/7 operation.

Usage recommendations

Choose V3.0 for lower noise and higher +12V output when building a home desktop or gaming PC; select V2.0 if 50°C operating tolerance is required. Verify connector compatibility and total system power draw to ensure the 450 W capacity meets your build requirements.

Specifications

Total power:: 450 W
Efficiency:: 85 %
Motherboard power connector:: 20+4 pin ATX
80 PLUS certification:: 80 PLUS Bronze
Fan diameter:: 92 mm
Weight:: 1.1 kg
Product colour:: Black

All features

Power

Total power:: 450 W
Efficiency:: 85 %
Power Factor Correction (PFC) type:: Active
Power protection features:: Over current, Over power, Over voltage, Short circuit, Under voltage
Power factor:: 0.9
Combined power (+3.3V):: 110 W
Combined power (+12V):: 450 W
Combined power (+5V):: 110 W
Combined power (-12V):: 3.6 W
Combined power (+5Vsb):: 15 W
Max output current (+3.3V):: 20 A
Max output current (+12V):: 37.5 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:: 90 - 264

Ports & interfaces

Motherboard power connector:: 20+4 pin ATX
Floppy disk drive connector:: Yes
PCI Express power connectors (6-pin):: 1
Floppy drive power connector:: 1
Number of SATA power connectors:: 3
Peripheral (Molex) power connectors (4-pin):: 2
EPS power connector (8-pin):: Yes
PCI Express power connectors (6+2 pin):: 1
Cabling type:: Non-Modular
Motherboard power cable length:: 300 mm
SATA power cable length:: 300, 100, 220
Peripheral (Molex) power cable length:: 200, 300
PCI Express power cable length:: 400 mm
Floppy disk drive cable length:: 300 mm

Performance

Purpose:: PC
80 PLUS certification:: 80 PLUS Bronze
Mean time between failures (MTBF):: 100000 h
Noise level: Not only energy saving helps to protect the environment but also noise level reduction. Noise level reduction up to 3 dB really means noise level reduction in 2 times. For example, a device with noise level 39 dB (А) will be two times quieter than a devise with a noise level 42 dB (А). Energy-saving certificate that shows noise level plays the role of an additional objective indicator basing on which You can successfully choose a product.: 18 dB
ATX version:: 2.4
Power supply unit (PSU) form factor:: SFX

Design

Fan diameter:: 92 mm
Number of fans:: 1 fan(s)
Cooling type:: Active
Fan location:: Top
On/off switch:: Yes
Product colour:: Black

Weight & dimensions

Weight:: 1.1 kg
Height:: 63.5 mm
Width:: 125 mm
Depth:: 100 mm

Operational conditions

Operating temperature (T-T):: 0 - 40

Other features

Rise time:: 20 ms

Logistics data

Harmonized System (HS) code:: 84733020

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Instructions

silverstone-SST-ST45SFV3.0-227352

Description

Instructions

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Customer questions

FAQ

How much does the Power Supply Unit Silverstone ST45SF cost, and is it available for purchase?

The price is 101.99 € (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 08.07.2026 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 Unit Silverstone ST45SF 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 Unit Silverstone ST45SF 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”;
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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 Unit Silverstone ST45SF?

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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