# Power supply unit FSP DAGGER PRO ATX3.0 (PCIe5.0) 850W, SFX, 80 PLUS Gold, 20+4 pin ATX, 92 mm fan

**URL:** https://aio.lv/en/product--fspfortron-dagger-pro-850-atx-3--10503820
**Data updated:** 2026-01-13 21:33 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** fsp/fortron
**Manufacturer code:** DAGGER PRO 850 ATX 3
**EAN:** 4713224527968
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 139.99 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 115.69 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--fspfortron-dagger-pro-850-atx-3--10503820

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Monday | free |
| Pickup points | 02.07.2026 | 1.89 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

FSP DAGGER PRO ATX3.0 (PCIe5.0) 850W is an SFX power supply delivering up to 850 W with 100–240 V AC input and 50/60 Hz. 80 PLUS Gold efficiency (~90%) reduces energy loss. It includes a 20+4 pin ATX motherboard connector (35 cm), SATA cables (450 mm), CPU, PCIe, Peripheral (Molex) and SATA connectors, and active cooling with a 92 mm fan. Suited for compact high-performance PCs and gaming builds requiring ATX3.0/PCIe5.0 compatibility.

## Long description

FSP DAGGER PRO ATX3.0 (PCIe5.0) 850W is a compact SFX power supply designed to deliver up to 850 W of continuous power for small-form-factor high-performance systems. Compatible with ATX3.0 and PCIe5.0 requirements, this unit supports modern GPUs and CPUs while maintaining energy efficiency through its 80 PLUS Gold rating. The supply accepts 100–240 V AC input at 50/60 Hz and comes with a 20+4 pin ATX motherboard lead and a selection of peripheral connectors, enabling installation in compact gaming rigs and workstation builds.
Advantages
The FSP DAGGER PRO 850W combines high output in an SFX enclosure with 80 PLUS Gold efficiency to reduce wasted energy and thermal load. Its ATX3.0/PCIe5.0 compatibility ensures it supports current power delivery standards for next-generation graphics cards. A 92 mm active cooling fan provides targeted airflow in constrained cases, while a range of included cables (20+4 pin ATX, SATA, PCIe, CPU, and peripheral) simplifies cable routing and component connectivity in compact builds.
Suitable for
Compact gaming PCs and mini-ITX or micro-ATX high-performance systems
Workstations requiring reliable, efficient power in small enclosures
Builds using PCIe5.0-capable graphics cards and ATX3.0 motherboards
Users seeking an 80 PLUS Gold certified SFX power supply
Key specifications
Total power output: 850 W
Efficiency level: approximately 90% (80 PLUS Gold)
Form factor: SFX
Input voltage/frequency: 100–240 V AC, 50/60 Hz
Motherboard connector: 20+4 pin ATX (cable length 35 cm)
Cooling: 92 mm fan
Color: Black
How to use
Install the FSP DAGGER PRO 850W into a compatible SFX mounting location within your case, observing orientation for optimal airflow toward the 92 mm fan. Connect the 20+4 pin ATX cable to the motherboard, then attach CPU power and PCIe connectors to the processor and graphics card as required. Use the provided SATA and peripheral leads for storage drives and accessories. Ensure all connections are secure before powering on the system and verify BIOS/firmware settings for power delivery where applicable.
Usage recommendations
Place the unit in an enclosure with adequate ventilation to allow the 92 mm fan to dissipate heat efficiently. Match cable routing to your case layout to avoid obstructing airflow. For stable performance with high-draw graphics cards, confirm that the PSU is installed according to ATX3.0 guidelines and that PCIe power cables are connected directly as required by the GPU manufacturer.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 850 W |
| Efficiency | 90 % |
| Power Factor Correction (PFC) type | Active |
| Power protection features | Overheating, Over voltage, Over power, Over current, Short circuit |
| Combined power (+3.3V) | 120 W |
| Combined power (+12V) | 850 W |
| Combined power (+5V) | 120 W |
| Combined power (-12V) | 3.6 W |
| Combined power (+5Vsb) | 12.5 W |
| Max output current (+3.3V) | 20 A |
| Max output current (+12V) | 70.83 A |
| Max output current (+5V) | 20 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 2.5 A |
| Input current | 12-6 |
| 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 | 6 |
| Peripheral (Molex) power connectors (4-pin) | 2 |
| CPU power connector (4+4 pin) | Yes |
| PCI Express power connectors (6+2 pin) | 2 |
| Cabling type | Fully-Modular |
| Motherboard power cable length | 350 mm |
| SATA power cable length | 450 |
| CPU power cable length | 450 mm |
| PCI Express power connectors (12+4 pin) | 1 |

### Performance

| Feature | Value |
|---|---|
| Purpose | PC |
| 80 PLUS certification | 80 PLUS Gold |
| Bearing technology | Ball bearing |
| ATX version | 3.0 |
| Power supply unit (PSU) form factor | SFX |

### Design

| Feature | Value |
|---|---|
| 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

| Feature | Value |
|---|---|
| Height | 63.5 mm |
| Width | 100 mm |
| Depth | 125 mm |

### Packaging content

| Feature | Value |
|---|---|
| Cables included | CPU, PCIe, Peripheral (Molex), SATA |

## FAQ

### How much does the FSP DAGGER PRO ATX3.0 850W power supply cost, and is it available for purchase?

The price is 139.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 9 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 Monday 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 FSP DAGGER PRO ATX3.0 850W 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 fsp/fortron 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 fsp/fortron 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, efficiency, 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.

## Image

https://aio.lv/img/cache/product/10503820/64810111_large.webp