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header-product Power supply unit Antec GSK1200 EC 1200 W, 20+4 pin ATX, Fully-modular, 80 PLUS Gold, 120 mm fan
166.99 €

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

Antec GSK1200 EC ATX PSU 1200 W Photo 1
Antec GSK1200 EC ATX PSU 1200 W Photo 2
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Antec GSK1200 EC ATX PSU 1200 W Photo 8
Antec GSK1200 EC ATX PSU 1200 W Photo 9
Antec GSK1200 EC ATX PSU 1200 W Photo 10
Antec GSK1200 EC ATX PSU 1200 W Photo 11
Antec GSK1200 EC ATX PSU 1200 W Photo 1
Antec GSK1200 EC ATX PSU 1200 W Photo 2
Antec GSK1200 EC ATX PSU 1200 W Photo 3
Antec GSK1200 EC ATX PSU 1200 W Photo 4
Antec GSK1200 EC ATX PSU 1200 W Photo 5
Antec GSK1200 EC ATX PSU 1200 W Photo 6
Antec GSK1200 EC ATX PSU 1200 W Photo 7
Antec GSK1200 EC ATX PSU 1200 W Photo 8
Antec GSK1200 EC ATX PSU 1200 W Photo 9
Antec GSK1200 EC ATX PSU 1200 W Photo 10
Antec GSK1200 EC ATX PSU 1200 W Photo 11
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Power supply unit Antec GSK1200 EC 1200 W, 20+4 pin ATX, Fully-modular, 80 PLUS Gold, 120 mm fan

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

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Short 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.
Available for order: 6 pcs.
Warranty: 2 Years
SKU: 12119731
free shipment

Cheapest delivery:

Venipak Locker LV

Pick-up points

Venipak Locker LV

Cost

1.89 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
23.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
28.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 1.00 kg)
Parcel couriers
Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Venipak Pickup LV / Latvijas Pasts nodaļa
28.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
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Payment Methods:
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Product information

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

Total power:
1200 W
Motherboard power connector:
20+4 pin ATX
80 PLUS certification:
80 PLUS Gold
Fan diameter:
120 mm
Product colour:
Black
All features

Power

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

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

Purpose:
PC/Server
80 PLUS certification:
80 PLUS Gold
ATX version:
3.1
Power supply unit (PSU) form factor:
ATX

Design

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

Weight & dimensions

Height:
86 mm
Width:
150 mm
Depth:
140 mm

Operational conditions

Operating temperature (T-T):
0 - 40

Packaging data

Package type:
Box

Description

Machine translation. Load original

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Customer reviews

Customer questions

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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

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.
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14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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