# Power supply TACENS MARS MPB850PSI 850W ATX 3.1 80 PLUS Gold modular, 14 cm fan, 5×SATA, 3×PCIe (6+2), 3×Molex

**URL:** https://aio.lv/en/product--tacens-tacmars-mpb850psi--11558214
**Data updated:** 2026-01-21 13:43 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** TACENS
**Manufacturer code:** TACMARS-MPB850PSI
**EAN:** 8435693111474
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 85.99 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 71.07 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tacens-tacmars-mpb850psi--11558214

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.06.2026 | free |
| Pickup points | 03.07.2026 | 1.89 EUR |
| Courier delivery to door | 03.07.2026 | 4.99 EUR |

## Summary description

ATX power supply TACENS MARS MPB850PSI provides 850 W total power with 80 PLUS Gold efficiency and active PFC. Designed for PCs, it features an ATX 3.1 form factor, a 14 cm top-mounted fan, modular cabling, input 200–240 V AC (47–63 Hz) and 8 A input current. Outputs include +12V (70.8 A), +5V/+3.3V (18 A each), +5Vsb 2.5 A, −12V 0.3 A. Connectors: 5×SATA, 3×PCIe (6+2), 3×Molex. Dimensions 150×85×160 mm, weight 1.7 kg.

## Long description

TACENS MARS MPB850PSI is an ATX 3.1 power supply designed for desktop PCs. It delivers up to 850 W of total power with 80 PLUS Gold efficiency and active Power Factor Correction (PFC). The unit uses a top-mounted 14 cm fan for active cooling and features a modular cabling system to simplify cable management.
Advantages
The power supply provides high efficiency (80 PLUS Gold) and active PFC for stable power delivery. Its modular cables reduce clutter inside the chassis, while the top-mounted 14 cm fan offers effective active cooling. Compact ATX form factor and a range of output rails make it suitable for modern PC configurations.
Suitable for
Gaming and high-performance desktop PCs
Workstations requiring stable 12 V rail and multiple connectors
Systems where modular cabling and efficient cooling are desired
Key specifications
Total power: 850 W
Efficiency certification: 80 PLUS Gold
Form factor: ATX (ATX 3.1)
AC input voltage: 200–240 V, 47–63 Hz
Input current: 8 A
Power factor: 0.9; PFC: active
Output currents: +12V up to 70.8 A; +5V up to 18 A; +3.3V up to 18 A; +5Vsb 2.5 A; -12V 0.3 A
Cooling: 1 × 140 mm top-mounted fan, active cooling, on/off switch
Cabling: modular
Connectors: 5 × SATA, 3 × PCIe (6+2 pin), 3 × Molex (4-pin)
Dimensions (W×H×D): 150 × 85 × 160 mm
Weight: 1.7 kg
Compliance: RoHS
How to use
Install the TACENS MARS MPB850PSI into a compatible ATX case following standard PSU mounting orientation with the fan positioned according to your case airflow. Connect the modular cables to the PSU and then to the motherboard, drives and PCIe devices as required, ensuring correct orientation for each connector. Verify AC input matches 200–240 V and connect to a suitable mains outlet. Use the on/off switch on the unit to power the supply on or off.
Usage recommendations
For reliable operation, ensure adequate case airflow and periodically clean the 14 cm fan to prevent dust buildup. Use appropriate PCIe connectors for graphics cards and avoid exceeding combined power limits of your system components.

## FAQ

### How much does the TACENS MARS MPB850PSI 850W ATX 3.1 PSU cost, and is it available for purchase?

The price is 85.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 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 30.06.2026 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 TACENS MARS MPB850PSI 850W ATX 3.1 PSU 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 TACENS 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 TACENS 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

## Image

https://aio.lv/img/cache/product/11558214/66728762_large.webp