Lian Li SX 1200W Platinum Fully Modular ATX 3.1 PSU – Black

Lian Li SX Platinum 1200W fully modular ATX 3.1 PSU in black with 80 PLUS Platinum efficiency, 12V-2×6 support and a 120mm FDB fan.

✓1200W maximum output
✓ATX 3.1 and PCIe 5.1
✓80 PLUS Platinum certified
✓Fully modular design
✓Compact 140mm depth

●In StockSKU: HA-28YDXZF9

💻 Product Overview

The Lian Li SX Platinum 1200W is a fully modular ATX 3.1 power supply built for high-performance gaming PCs and workstations. It delivers 1200W with up to 94% conversion efficiency at 50% load, and its compact 140mm depth leaves more room for cable routing inside the case. Smart fan-stop operation keeps the unit quiet under lighter loads.

✨ Key Features

1200W Output: Delivers 1200W maximum output with 1200W available on the combined +12V rail.
ATX 3.1 and PCIe 5.1: Built to current ATX 3.1 and PCIe 5.1 standards for modern CPUs and graphics cards.
Platinum Efficiency: Carries 80 PLUS Platinum and PPLP Platinum certification, reaching up to 94% efficiency at 50% load.
Fully Modular Cabling: Connect only the cables the build needs, with braided main cables and cable combs on the 24-pin, CPU and 12V-2×6 runs.
12V-2×6 Connector: Native 12V-2×6 support with copper-alloy terminals and a dual-color GPU connector for insertion checks.
Quiet Cooling: A 120mm FDB fan runs smart stop/start, allowing fanless operation up to about 40% load, with a rear switch to enable or disable it.

🇱🇧 Why Buy from Technodel?

🚚 Delivery Across Lebanon — 1-3 business days to all regions
🛡️ Warranty — as stated on this product page, plus 30-day returns with a full refund
💬 WhatsApp Support — ask us anything before or after you order
💵 Cash on Delivery — pay when the order reaches you

🛒 Frequently Bought Together

MSI

MSI MAG FORGE 321R Airflow ATX Gaming Case, ARGB Fans, USB-C, Black

PC Cases

$75

Lian Li

LIAN LI UNI FAN SL-INF 120 INFINITY RGB x3 pack BLACK + CONTROLLER

Case Fans

$92

❓ Common Questions

Real questions customers ask about this product — delivery, warranty, payments & compatibility.

Is this product available in Lebanon?▾

Yes — it is available at Technodel with delivery across all of Lebanon: same-day to Beirut, Sour, Tripoli and surroundings, and 1–2 days to every other region.

Where does Technodel source this product?▾

Technodel sources from established suppliers in Lebanon. The product page states its condition and its warranty, and compatible parts are labelled as compatible.

What warranty comes with this product?▾

Warranty terms are stated on each product page. Where a manufacturer warranty applies, warranty support is handled through Technodel.

How can I pay for this product?▾

Technodel accepts cash on delivery, Wish Money transfer, and cryptocurrency (USDT, BTC, ETH). Delivery is a flat $4 anywhere in Lebanon, free on orders of $500 or more.

Is this power supply enough for my PC build?▾

Add your CPU + GPU power draw plus ~30% headroom. A quality 650–750W 80+ Gold unit covers most single-GPU builds; high-end GPUs (RTX 4080/4090) typically want 850W+. Modular units ease cable management.

What's the difference between modular and non-modular PSUs?▾

Fully modular PSUs attach only the cables you need — tidier builds. Semi-modular fixes essential cables but frees the rest. Non-modular is cheaper but all cables are fixed.

Need another answer? Message us on WhatsApp +961 3 659 872 or read our FAQ.