# Power supply unit TACENS Mars Gaming MPB850SI 850 W, ATX, 80 PLUS Bronze, 120 mm fan, non-modular

**URL:** https://aio.lv/en/product--tacens-tacmars-mpb850si--11408473
**Data updated:** 2026-01-21 11:10 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** TACENS
**Manufacturer code:** TACMARS-MPB850SI
**EAN:** 8435693109549
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 71.99 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 59.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tacens-tacmars-mpb850si--11408473

## 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 Gaming MPB850SI with 850 W total power and 80 PLUS Bronze certification. Non-modular PSU with a 120 mm top-mounted fan, active PFC and protections against short circuit. Output rails: +12V up to 70.5 A (846 W combined), +3.3V/ +5V up to 18 A each, six SATA, three Molex and four 6+2 PCIe connectors. Suitable for desktop PC builds requiring stable high power and multiple PCIe/SATA connections.

## Long description

The Mars Gaming MPB850SI 850 W power supply delivers stable power for high-performance PCs while prioritizing low noise and efficiency. This ATX unit features an SI fan with a copper and aluminum rotor and FDB bearings, AI2-RPM smart fan control, DC-DC conversion, SMD components and 80 PLUS Bronze (230 V EU) certification. It includes a 24-pin ATX connector, extra-long flat black cables for improved cable management and is TÜV Rheinland certified with a 7-year warranty.
Advantages
The MPB850SI combines quiet operation and efficient power delivery through a specially designed SI fan and AI2-RPM machine-learning control that adjust fan speed to system load. DC-DC and SMD technologies provide stable voltages and improved component reliability, while 80 PLUS Bronze certification and optimized thermal channels increase energy efficiency and system stability. Comprehensive protections (OVP, UVP, OCP, OPP, SCP) and TÜV Rheinland validation offer durable and safe operation backed by a 7-year warranty.
Suitable for
Mid-range and high-performance gaming PCs
Workstations with discrete graphics cards
Systems requiring stable voltages for sensitive components
Builders seeking tidy cable management and improved airflow
Key specifications
Total power: 850 W
Input voltage: 200–240 V AC, 47–63 Hz
80 PLUS certification: 80 PLUS Bronze (230 V EU)
Motherboard connector: 24-pin ATX
Fan diameter: 120 mm (SI fan, FDB bearings)
Protection features: OVP, UVP, OCP, OPP, SCP
Weight: 1.6 kg
Color options: Black and White
How to use
Install the MPB850SI into a compatible ATX case following the motherboard and PSU manufacturer instructions. Connect the 24-pin ATX and required peripheral cables to the motherboard, GPU and storage devices. Ensure correct AC mains connection within the 200–240 V range and secure all connectors. During initial power-on the AI2-RPM system will automatically adapt fan speed according to system load. Verify system stability and cable routing to maintain optimal airflow.
Usage recommendations
Use this PSU in systems that match its 850 W capacity and 200–240 V input range. Maintain case airflow, avoid obstructing the fan intake, and route the flat cables to prevent contact with hot components. For demanding GPUs or heavily overclocked CPUs, ensure headroom in wattage and confirm compatibility with your components.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 850 W |
| Power Factor Correction (PFC) type | Active |
| Power protection features | Over power, Over voltage, Overcharge, Short circuit, Under voltage |
| Power factor | 0.9 |
| Combined power (+3.3V) | 120 W |
| Combined power (+12V) | 846 W |
| Combined power (+5V) | 120 W |
| Combined power (-12V) | 3.6 W |
| Combined power (+5Vsb) | 12.5 W |
| Max output current (+3.3V) | 18 A |
| Max output current (+12V) | 70.5 A |
| Max output current (+5V) | 18 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 2.5 A |
| Input current | 8 |
| AC input frequency | 47 - 63 |
| AC input voltage | 200 - 240 |

### Ports & interfaces

| Feature | Value |
|---|---|
| Motherboard power connector | 24-pin ATX |
| ATX Power connector (24-pin) | Yes |
| Number of SATA power connectors | 6 |
| Peripheral (Molex) power connectors (4-pin) | 3 |
| PCI Express power connectors (6+2 pin) | 4 |
| Cabling type | Non-Modular |
| EPS power connector (4+4 pin) | Yes |

### Performance

| Feature | Value |
|---|---|
| Purpose | PC |
| 80 PLUS certification | 80 PLUS Bronze |
| Power supply unit (PSU) form factor | ATX |

### Design

| Feature | Value |
|---|---|
| Fan diameter | 120 mm |
| Number of fans | 1 fan(s) |
| Cooling type | Active |
| Fan location | Top |
| On/off switch | Yes |
| Product colour | Black |

### Certificates

| Feature | Value |
|---|---|
| Compliance certificates | CE, RoHS, TÜV mark |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 1.6 kg |
| Height | 85 mm |
| Width | 150 mm |
| Depth | 145 mm |

### Packaging data

| Feature | Value |
|---|---|
| Package depth | 125 mm |
| Package height | 205 mm |
| Package width | 238 mm |
| Package type | Box |

## FAQ

### How much does the TACENS Mars Gaming MPB850SI 850 W PSU cost, and is it available for purchase?

The price is 71.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 16 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 Gaming MPB850SI 850 W 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

### 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, 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 TACENS Mars Gaming MPB850SI 850 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.

## Image

https://aio.lv/img/cache/product/11408473/66194834_large.webp