# Power supply unit Antec GSK1200 EC 1200 W, 20+4 pin ATX, Fully-modular, 80 PLUS Gold, 120 mm fan

**URL:** https://aio.lv/en/product--antec-0-761345-20199-5--12119731
**Data updated:** 2026-03-26 06:21 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** ANTEC
**Manufacturer code:** 0-761345-20199-5
**EAN:** 0761345201995
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 166.99 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 138.01 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--antec-0-761345-20199-5--12119731

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

ATX power supply unit Antec GSK1200 EC provides 1200 W of total power with AC input 100–240 V and 50/60 Hz. It features a 20+4 pin ATX motherboard connector, fully‑modular cabling, 80 PLUS Gold efficiency and active cooling with a 120 mm fan. Designed for desktop PCs and small servers, it fits standard ATX form factors (150×140×86 mm) and is finished in black.

## Long description

The Antec GSK1200 EC is a 1200 W ATX power supply designed for desktop PCs and small servers. It provides broad AC input compatibility (100–240 V, 50/60 Hz), a 20+4 pin ATX motherboard connector and fully modular cabling to simplify installation and cable management. The unit is 80 PLUS Gold certified for high energy efficiency and uses a 120 mm fluid-dynamic bearing fan for active cooling. Housed in a compact black enclosure that fits standard ATX form factors (150×140×86 mm), this PSU supports modern hardware requirements while offering advanced protection and thermal control features.
Advantages
The fully modular design reduces clutter inside the chassis and makes system assembly and upgrades easier. 80 PLUS Gold efficiency lowers wasted energy and operating temperatures compared with lower-efficiency units, while high-quality internal components and an advanced topology provide stable voltage regulation. The included 120 mm FDB fan and Zero RPM thermal management balance quiet operation with effective cooling. Compact dimensions expand case compatibility without sacrificing power delivery.
Suitable for
High-performance gaming PCs and enthusiast builds
Workstations and small server systems requiring stable 1200 W supply
Systems that benefit from modular cable management and reduced internal clutter
Upgrades to modern graphics cards compatible with PCIe 5.1 and ATX 3.1 standards
Key specifications
Total output power: 1200 W
Input voltage: 100–240 V, 50/60 Hz
Motherboard connector: 20+4 pin ATX
Efficiency rating: 80 PLUS Gold
Cooling: 120 mm fluid-dynamic bearing fan with Zero RPM management
Design: Fully modular cabling
Form factor / dimensions: standard ATX footprint, 150×140×86 mm
Colour: Black
How to use
Install the PSU into a compatible ATX chassis following the case manufacturer’s instructions, align mounting holes and secure with screws. Connect the 20+4 pin ATX cable to the motherboard and attach required modular cables for CPU, GPU and storage devices only, to maintain tidy airflow. Ensure the unit is connected to a properly rated AC source (100–240 V) and use a surge-protected power strip or UPS where appropriate. Monitor system temperatures and fan behavior during initial operation to confirm the Zero RPM mode and cooling performance are functioning as expected.
Usage recommendations
For reliable long-term operation, avoid running the PSU at or near its maximum continuous output for extended periods; maintain adequate case airflow and periodically inspect cables and connectors. When installing high-end GPUs, use the provided PCIe-compatible cables and ensure cable routing avoids obstructing fans or airflow paths.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 1200 W |
| Power Factor Correction (PFC) type | Active |
| Power protection features | No load operation, Over current, Over power, Over total voltage, Short circuit, Surge & inrush protection (SIP), Under voltage |
| Combined power (+3.3V) | 100 W |
| Combined power (+12V) | 1200 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) | 100 A |
| Max output current (+5V) | 20 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 3 A |
| Input current | 15 - 10 |
| 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 | 9 |
| Peripheral (Molex) power connectors (4-pin) | 4 |
| ATX power connector (20+4 pin) | Yes |
| CPU power connector (4+4 pin) | Yes |
| PCI Express power connectors (6+2 pin) | 5 |
| Cabling type | Fully-Modular |
| PCI Express power connectors (12+4 pin) | 2 |

### Performance

| Feature | Value |
|---|---|
| Purpose | PC/Server |
| 80 PLUS certification | 80 PLUS Gold |
| ATX version | 3.1 |
| Power supply unit (PSU) form factor | ATX |

### Design

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

### Weight & dimensions

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

### Operational conditions

| Feature | Value |
|---|---|
| Operating temperature (T-T) | 0 - 40 |

### Packaging data

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

## FAQ

### How much does the Antec GSK1200 EC ATX PSU 1200 W cost, and is it available for purchase?

The price is 166.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 23.07.2026 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. 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 ANTEC 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 ANTEC 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 Antec GSK1200 EC ATX PSU 1200 W?

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/12119731/67664566_large.webp