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header-product Power Supply Unit THERMALTAKE Smart BX3 550 W ATX 3.1, 80 PLUS Bronze, 120 mm fan, non-modular
51.99 €

Power Supply Unit THERMALTAKE Smart BX3 550 W ATX 3.1, 80 PLUS Bronze, 120 mm fan, non-modular

THERMALTAKE Smart BX3 550 W PSU Photo 1
THERMALTAKE Smart BX3 550 W PSU Photo 2
THERMALTAKE Smart BX3 550 W PSU Photo 3
THERMALTAKE Smart BX3 550 W PSU Photo 4
THERMALTAKE Smart BX3 550 W PSU Photo 5
THERMALTAKE Smart BX3 550 W PSU Photo 6
THERMALTAKE Smart BX3 550 W PSU Photo 1
THERMALTAKE Smart BX3 550 W PSU Photo 2
THERMALTAKE Smart BX3 550 W PSU Photo 3
THERMALTAKE Smart BX3 550 W PSU Photo 4
THERMALTAKE Smart BX3 550 W PSU Photo 5
THERMALTAKE Smart BX3 550 W PSU Photo 6
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Power Supply Unit THERMALTAKE Smart BX3 550 W ATX 3.1, 80 PLUS Bronze, 120 mm fan, non-modular

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Power Supply Unit THERMALTAKE Smart BX3 550 W ATX 3.1, 80 PLUS Bronze, 120 mm fan, non-modular

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Short description

THERMALTAKE Smart BX3 550 W is an ATX 3.1 power supply designed for desktop PCs. It delivers 550 W peak/total power with a single +12V rail (54.2 A) and combined +3.3V/+5V power of 110 W. Features include 80 PLUS Bronze efficiency, active PFC, 120 mm silent fan, non-modular cabling, wide AC input (100–240 V) and 150 ms hold-up time. Compact 140 × 150 × 86 mm housing suitable for standard ATX builds.
Available at price 51.99 €: 8 pcs.
Total available for order: 38 pcs.
Warranty: 5 Years
SKU: 10893674
free shipment

Cheapest delivery:

Venipak Locker LV

Pick-up points

Venipak Locker LV

Cost

1.89 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
06.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
09.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 2.11 kg)
Parcel couriers
Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Venipak Pickup LV / Latvijas Pasts nodaļa
09.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
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Payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay
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Product information

Description

The Thermaltake Smart BX3 550 W power supply is an ATX 3.1–compatible unit designed for mainstream PC builds. It offers 550 W of continuous power, 80 PLUS Bronze efficiency, a non-modular flat black cable design and a 120 mm fluid-bearing fan. The unit meets ATX 3.1 timing and excursion requirements and includes a 5-year manufacturer warranty.

Advantages

The Smart BX3 provides ATX 3.1 compliance with support for power excursions and low-load efficiency, a high-quality 105°C main capacitor for improved durability, and a single high-amperage +12V rail with DC-to-DC regulation for stable voltage delivery. A Smart Zero Fan profile reduces noise by spinning the 120 mm fan only above a defined load threshold, while soft flat cables simplify installation.

Suitable for

  • Mainstream desktop PC builds requiring a reliable 550 W PSU
  • Budget-conscious users seeking ATX 3.1 compatibility and Bronze efficiency
  • Systems where quiet operation and straightforward cable routing are preferred

Key specifications

  • Total power: 550 W
  • Form factor: ATX
  • Efficiency: 80 PLUS Bronze
  • Fan: 120 mm fluid-bearing with Smart Zero Fan control
  • Cabling: Non-modular flat black cables
  • Main capacitor temperature rating: 105°C
  • Dimensions: 150 x 140 x 86 mm
  • Brand/Model: Thermaltake Smart BX3 (MPN: PS-SPD-0550NNFABE-3, EAN: 4711475642942)
  • Warranty: 5 years

How to use

Install the PSU into a standard ATX case following the case and motherboard manufacturer instructions. Connect the 24-pin ATX main cable, the required +12V CPU and PCIe connectors, and SATA/Molex connectors to drives and peripherals. Ensure the PSU AC input matches local mains voltage (100–240 V) and secure the unit with screws. Power on the system and verify stable operation and fan behavior; the Smart Zero Fan will remain off until load increases above its threshold.

Usage recommendations

Choose this 550 W Thermaltake Smart BX3 PSU for typical single-GPU systems and office or home builds. For higher-power gaming rigs or multi-GPU configurations, select a higher wattage model to maintain adequate headroom and efficiency.

Specifications

Total power:
550 W
80 PLUS certification:
80 PLUS Bronze
Fan diameter:
120 mm
Product colour:
Black
All features

Power

Total power:
550 W
Power Factor Correction (PFC) type:
Active
Peak power:
550 W
Hold time:
150 ms
Combined power (+3.3V):
110 W
Combined power (+12V):
550 W
Combined power (+5V):
110 W
Combined power (-12V):
3.6 W
Combined power (+5Vsb):
15 W
Max output current (+3.3V):
18 A
Max output current (+12V):
54.2 A
Max output current (+5V):
18 A
Max output current (-12V):
0.3 A
Max output current (+5Vsb):
3 A
Input current:
12
AC input frequency:
50/60
AC input voltage:
100 - 240

Ports & interfaces

Cabling type:
Non-Modular

Performance

Purpose:
PC
80 PLUS certification:
80 PLUS Bronze
ATX version:
3.1
Silent mode:
Yes
Power supply unit (PSU) form factor:
ATX

Design

Fan diameter:
120 mm
Product colour:
Black

Weight & dimensions

Height:
86 mm
Width:
150 mm
Depth:
140 mm

Operational conditions

Operating relative humidity (H-H):
20 - 85
Storage temperature (T-T):
-40 - 55
Operating temperature (T-T):
5 - 45
Storage relative humidity (H-H):
10 - 95

Description

Machine translation. Load original

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Stock data
Warehouse Stock Delivery to the store Store Price
EU1 8 06.07.2026 Best delivery 51.99 € Best price
WH353 20 13.07.2026 56.49 €
WH115 10 09.07.2026 60.49 €
51.99 €
Stock: 8
Delivery Date: 06.07.2026 Best delivery
Warehouse: EU1
56.49 €
Stock: 20
Delivery Date: 13.07.2026
Warehouse: WH353
60.49 €
Stock: 10
Delivery Date: 09.07.2026
Warehouse: WH115

Customer reviews

Customer questions

FAQ

How much does the THERMALTAKE Smart BX3 550 W PSU cost, and is it available for purchase?

The price is 51.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 38 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 06.07.2026 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. All transactions are 100% secure and encrypted.

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 THERMALTAKE 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 THERMALTAKE 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, 80 plus certification, fan diameter, 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 THERMALTAKE Smart BX3 550 W PSU?

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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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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