Lian Li SX1200P Platinum Compact ATX PSU 1200W ATX 3.1 , SXP Compact ATX Form Factor, 12V-2×6 Cable, ATX 3.1 & PCIE 5.1 Compliant, Japanese 105°C Caps, 120mm FDB Fan | WHITE
178 $
Categories: COMPUTER PARTS, Power Supplies
Expert Features
- 1200W Platinum Power Beast : The SX1200P delivers a full 1200W maximum DC output with 80 PLUS Platinum and PPLP Platinum certification, built to feed serious high-end gaming rigs without flinching under pressure.【turn119207view0†L169-L178】【turn119207view0†L323-L343】
- ATX 3.1 + PCIe 5.1 Ready : Fully aligned with ATX 3.1 and PCIe 5.1 standards, this PSU is built for modern next-gen systems and supports power excursions up to 200% of rated output for smoother high-performance operation.【turn119207view0†L88-L90】【turn119207view0†L240-L249】
- Native 12V-2×6 GPU Support : Equipped with a 12V-2×6 high-current copper-alloy terminal for safer, more stable delivery to modern graphics cards—exactly the kind of connector a monster gaming build expects.【turn119207view0†L122-L127】【turn119207view0†L248-L253】
- Triple PCIe 6+2 GPU Flexibility : The 1200W model includes three PCIe 6+2 cables, plus two additional 12V-2×6 to dual PCIe 6+2-pin cables, giving wide support for powerful or multi-connector GPU setups, especially useful for high-end AMD cards and upgrade-heavy builds.【turn119207view0†L255-L265】
- Fully Modular Cable Design : Only connect what your build actually needs. That means cleaner cable management, better airflow, and less spaghetti shame behind the motherboard tray.【turn119207view0†L227-L229】【turn119207view0†L329-L329】
- Braided Cables With Cable Combs : Main power cables use braided sleeving, while the 24-pin, CPU, and 12V-2×6 GPU cables include cable combs for a cleaner, more premium showcase finish inside glass-panel gaming builds.【turn119207view0†L233-L239】
- Whisper-Quiet Smart Fan Mode : The PSU supports fanless operation up to 40% load with smart stop/start behavior, so your system stays calmer and quieter during lighter gaming or everyday use.【turn119207view0†L91-L91】【turn119207view0†L188-L190】
- 120mm FDB Cooling Fan : When active cooling is needed, the 120mm FDB fan spins up to 2000RPM for dependable thermal control without turning your rig into a leaf blower festival.【turn119207view0†L341-L342】
- 100% Japanese 105°C Capacitors : Lian Li specifies premium Rubycon / Nippon Chemi-Con / Nichicon 105°C capacitors, helping improve voltage stability, reduce ripple, and support long-term reliability under heavy thermal load.【turn119207view0†L92-L92】【turn119207view0†L266-L267】
- Compact 140mm ATX Body : Despite its 1200W output, the SX1200P sticks to a standard 140mm depth, making it easier to install in a broad range of cases while leaving more room for cable routing.【turn119207view0†L93-L93】【turn119207view0†L271-L277】
- Open-Mesh Vented Front Panel : The patterned vented front improves airflow while adding extra visual attitude to the PSU instead of leaving it looking like a boring power brick.【turn119207view0†L284-L286】
- Comprehensive Hardware Protection : Built-in OPP, NLP, OVP, SCP, OCP, OTP, SIP, and UVP protections help defend the system against overload, overcurrent, overvoltage, overheating, and short-circuit conditions.【turn119207view0†L288-L290】【turn119207view0†L339-L340】
- White Showcase Build Ready : This exact version is the White SX1200P, ideal for white-themed gaming rigs where clean hardware and visible cable aesthetics actually matter.【turn119207view0†L140-L167】【turn119207view0†L326-L330】
- 1-Year Warranty : Your website version should list this unit with a 1-year warranty only, adjusted per your instruction.






Expert Specs
| Specification | Details |
|---|---|
| Brand | Lian Li |
| Product Series | SX Platinum |
| Exact Model | SX1200P |
| Color | White |
| Product Type | ATX Power Supply Unit |
| PSU Form Factor | Standard ATX |
| Dimensions | 150 × 86 × 140mm |
| Output Cable Design | Fully Modular |
| ATX Standard | ATX 3.1 |
| PCIe Standard | PCIe 5.1 |
| Efficiency Certification | 80 PLUS Platinum |
| Additional Efficiency Certification | PPLP Platinum |
| Maximum DC Output | 1200W |
| Combined +3.3V & +5V Output | 100W |
| Combined +12V Output | 1200W |
| Input Rating | 100–240Vac |
| Input Current / Frequency | 7.5–14.8A, 50–60Hz |
| Power Factor Correction | Active PFC, PF > 0.95 under full load @ 115Vac, 60Hz |
| Fan Type | 120mm FDB Fan |
| Maximum Fan Speed | 2000RPM |
| Fanless Mode | Smart stop/start up to 40% load |
| Average Fanless Operating Time | Minimum 100,000 hours @ 25°C / 75% load |
| Main Capacitors | 100% Japanese 105°C capacitors |
| Capacitor Brands Listed | Rubycon / Nippon Chemi-Con / Nichicon |
| Native Modern GPU Connector | 12V-2×6 high-current copper-alloy terminal |
| Additional GPU Power Support | 3 × PCIe 6+2 cables |
| Extra GPU Adapter Support | 2 × 12V-2×6 to dual PCIe 6+2-pin cables |
| Cable Styling | Braided-texture main cables |
| Cable Management Accessories | Cable combs on 24-pin, CPU, and 12V-2×6 GPU cables |
| Protection Suite | OPP, NLP, OVP, SCP, OCP, OTP, SIP, UVP |
| Front Vent Design | Patterned open-mesh front panel |
| Case Compatibility Advantage | Compact 140mm depth for easier installation and routing |
| Safety / Stability Claim | Supports power excursions up to 200% of rated output |
| Official Colors in Product Family | Black / White |
| This Website Version | White only |
| Website Warranty | 1 Year |
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