# Seasonic PRIME Fanless PX Power Supply Unit 450 W

**URL:** https://aio.lv/en/product--seasonic-prime-px-500--3467452
**Data updated:** 2026-02-17 11:43 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** SEASONIC
**Manufacturer code:** PRIME-PX-500
**EAN:** 4711173875598
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 169.49 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 140.07 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--seasonic-prime-px-500--3467452

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

The Seasonic PRIME Fanless PX is a 450 W ATX power supply designed for PCs. It features a 20+4 pin motherboard connector, passive cooling, and 80 PLUS Platinum certification for high efficiency. With an AC input voltage range of 100-240 V and a frequency of 50-60 Hz, it ensures stable power delivery. The power cables are long enough for easy installation, making it a reliable choice for silent operation.

## Long description

The Seasonic PRIME Fanless PX Power Supply Unit 450 W is a fully passive ATX power supply designed for silent PC operation. It delivers up to 450 W of continuous power with 80 PLUS Platinum efficiency and a 20+4 pin ATX motherboard connector. Passive cooling replaces internal fans to eliminate fan noise while high-quality components and an optimized circuit design ensure stable and clean power delivery for sensitive and high-performance systems. Fully modular cables simplify cable management during installation.
Advantages
The PRIME Fanless PX features 80 PLUS Platinum efficiency, providing up to 92% efficiency at typical load points and reducing wasted energy. Seasonic’s micro tolerance load regulation keeps output voltages within a tight range (under 0.5% load regulation) for improved electrical stability. Fanless, passive cooling removes moving parts and audible noise, and the fully modular cable set allows flexible and tidy internal cabling.
Suitable for
Silent home or office PCs where noise must be minimized
Compact or HTPC systems that benefit from fanless operation
Workstations and systems requiring clean, stable power for sensitive components
Enthusiast builds where cable management and efficiency are priorities
Key specifications
Total power: 450 W
80 PLUS certification: 80 PLUS Platinum
Motherboard connector: 20+4 pin ATX
AC input: 100–240 V, 50–60 Hz
Product colour: Black
How to use
Install the Seasonic PRIME Fanless PX like a standard ATX PSU: secure it in the case’s PSU mounting area, connect the 20+4 pin motherboard cable and other modular cables to components as required, and confirm correct AC input connection. Because the unit is fanless, ensure your PC case has adequate airflow or passive cooling paths to allow heat dissipation from the PSU and surrounding components.
Usage recommendations
Place the power supply in a location within the case that allows unobstructed airflow for passive cooling. Avoid covering vents or installing the unit in poorly ventilated enclosures. For systems approaching the unit’s maximum capacity, monitor temperatures and system stability to ensure safe operation.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 450 W |
| Power protection features | Short circuit, Under voltage, Over voltage, Over power, Over current |
| Combined power (+3.3V) | 100 W |
| Combined power (+12V) | 444 W |
| Combined power (+5V) | 100 W |
| Combined power (-12V) | 3.6 W |
| Combined power (+5Vsb) | 15 W |
| Max output current (+3.3V) | 20 A |
| Max output current (+12V) | 37 A |
| Max output current (+5V) | 20 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 3 A |
| AC input frequency | 50 - 60 |
| AC input voltage | 100 - 240 |

### Ports & interfaces

| Feature | Value |
|---|---|
| Motherboard power connector | 20+4 pin ATX |
| Number of SATA power connectors | 2 |
| Peripheral (Molex) power connectors (4-pin) | 2 |
| PCI Express power connectors (6+2 pin) | 2 |
| CPU power connectors (8-pin) | 2 |
| Cabling type | Fully-Modular |
| Motherboard power cable length | 610 mm |
| SATA power cable length | 810, 860 |
| CPU power cable length | 650 mm |
| Peripheral (Molex) power cable length | 470, 690 |
| PCI Express power cable length | 750 mm |

### Performance

| Feature | Value |
|---|---|
| Purpose | PC |
| 80 PLUS certification | 80 PLUS Platinum |
| Mean time between failures (MTBF) | 150000 h |
| Supported motherboard form factors | ATX |
| Power supply unit (PSU) form factor | ATX |

### Design

| Feature | Value |
|---|---|
| Fan diameter | 135 mm |
| Number of fans | 1 fan(s) |
| Cooling type | Passive |
| On/off switch | Yes |
| Product colour | Black |

### Certificates

| Feature | Value |
|---|---|
| Certification | cTUVus, TUV, CB, CCC, BSMI, EAC, CE, WEEE, ErP Lot 6, REACH |
| Compliance certificates | RoHS |

### Technical details

| Feature | Value |
|---|---|
| Sustainability certificates | ENERGY STAR |

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 86 mm |
| Width | 150 mm |
| Depth | 140 mm |

### Operational conditions

| Feature | Value |
|---|---|
| Operating temperature (T-T) | 0 - 50 |

### Packaging data

| Feature | Value |
|---|---|
| Package type | Box |

## FAQ

### How much does the Seasonic PRIME Fanless PX Power Supply cost, and is it available for purchase?

The price is 169.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 49 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 15.07.2026 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 Seasonic PRIME Fanless PX Power Supply 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 SEASONIC 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 SEASONIC 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, 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 Seasonic PRIME Fanless PX Power Supply?

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.

## Image

https://aio.lv/img/cache/product/3467452/64785902_large.webp