ASUS ROG Strix 1200W Platinum (80 PLUS and Cybenetics Platinum, fully modular ATX, ATX 3.1, PCIe 5.1, GaN MOSFET, GPU-First IVS, ROG Equalizer 12V-2x6 GPU power cable, 10-year warranty)
- GaN MOSFET: Increases efficiency by up to 30%, with a more organized internal layout for cooler operation
- Patented GPU-First ROG Intelligent Voltage Stabilizer: Enhances voltage delivery to your graphics card by up to 45% for smoother gaming and unwavering performance
- ROG Equalizer 12V-2x6 PCIe power cable included: Redefines power protection by reducing heat stress and keep cable and connector temperatures well to protect the graphics card
- 80 PLUS and Cybenetics Platinum certified: ROG Strix Platinum utilizes low-ESR capacitors and premium components for industry-leading power efficiency
- Lambda A+ noise certification: Certified low noise levels, below 20dB
- ATX 3.1 compatible: ROG Strix Platinum is compliant with the ATX 3.1 standard to provide enhanced voltage and current regulation
- 0dB technology: Lets you enjoy light gaming in near silence
- 10-year warranty: Long-term peace of mind included
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Overview
Specs
Reviews
ROG STRIX 1200P GMNG E
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 10 years
- Limited Warranty period (labor): 10 years
- Read full details
Return Policies
- Return for refund until: January 31, 2027
- Return for replacement until: January 31, 2027
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Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-888-678-3688
- Support Website
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The ASUS ROG Strix 1200W Platinum is a fully modular ATX 3.1 power supply for high-end gaming PCs and workstations, offering 1200W, PCIe 5.1 support, a native 12V-2x6 GPU cable, and GPU-First voltage stabilization for demanding graphics cards.
Recommended For
- High-end gaming PC builders using an RTX 5090, RTX 5080, or similarly demanding GPU who want a native 12V-2x6 connection, ATX 3.1 support, and substantial power headroom for GPU load changes.
- Quiet-PC enthusiasts who run demanding games or workloads but prefer low fan noise during light use; testing found quiet operation, and the PSU supports semi-passive 0dB operation at lower loads.
- Enthusiasts planning a long-term high-end build who want modern GPU power standards, a fully modular design, and a 10-year warranty rather than replacing the PSU during the next upgrade cycle.
- DIY PC builders who want easier cable management for a large ATX system, with fully modular cabling, dedicated PCIe cables, flexible etched cables, and a relatively compact 160 mm PSU length for its wattage class.
Real-World Use Scenarios
- When building a high-end gaming PC with a flagship GPU and enthusiast CPU, the 1200W capacity provides substantial headroom for sustained gaming loads and short GPU power excursions, while the native 12V-2x6 cable avoids relying on additional GPU power adapters.
- During everyday desktop use and light gaming, enabling 0dB mode can keep the PSU fan stopped or barely noticeable, so system noise is more likely to come from the CPU cooler, GPU, or case fans than from the power supply.
- For long gaming, rendering, or AI workloads that keep the GPU and CPU busy for hours, the PSU is designed to maintain stable power delivery and high efficiency; however, the fan becomes more audible as the system approaches very high sustained loads.
- When upgrading to a newer graphics card that uses a 16-pin PCIe connector, the included ROG Equalizer 12V-2x6 cable simplifies installation and is intended to reduce heat stress at the cable and connector compared with less integrated cabling arrangements.
- When assembling a performance PC with multiple drives, two CPU power connections, and several PCIe accessories, the fully modular design lets the builder install only the required cables, which can reduce cable clutter and make routing behind the motherboard tray easier.
- For a builder planning several years of GPU or CPU upgrades, the ATX 3.1 design, native 12V-2x6 support, high output capacity, and 10-year warranty reduce the likelihood that the PSU will need to be replaced during the next major hardware upgrade cycle.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | High-power desktop systems and graphics cards requiring a 1200 W fully modular ATX 3.1 power supply with a 12V-2x6 PCIe connection |
| Power Capacity And Output | 1200 W maximum output with a single +12 V rail rated at 100 A, plus +3.3 V and +5 V rails rated at 25 A each |
| Efficiency And Noise | 80 PLUS Platinum certified with Cybenetics A noise certification |
| Connectors And Cabling | Fully modular connections include a 20/24-pin motherboard connector, two CPU 4+4-pin connectors, one 12V-2x6 PCIe connector, four PCIe 6+2-pin connectors, six SATA connectors, and three peripheral connectors; included cables range up to 1000 mm |
| Standards And Protection | ATX 3.1 and ATX12V compatible with over-power, over-voltage, under-voltage, short-circuit, over-current, and over-temperature protection |
| Cooling And Reliability | Single-fan design with an MTBF exceeding 120,000 hours at 25°C |
| Input Power | Supports 100–240 V input |
| Physical Specifications | Black internal ATX power supply measuring 160 × 150 × 86 mm and weighing 1.84 kg |
| Model Identifiers | ASUS ROG-STRIX-1200P-GAMING-E |
Reference Q&A
Q: Should I buy the ASUS ROG Strix 1200W Platinum or the 1000W version?
A: Choose the ROG Strix 1200W Platinum if you are building around an RTX 5090-class GPU, using aggressive CPU or GPU overclocking, or want more upgrade headroom. ASUS lists 1200W or higher for RTX 5090 systems and 1000W or higher for RTX 5080 systems. The 1000W model is the more efficient capacity choice for systems that do not need the additional reserve.
Q: Is the ASUS ROG Strix 1200W Platinum better than the Corsair RM1200x SHIFT?
A: The ASUS is the better fit when you want 80 PLUS Platinum efficiency, a native PCIe 5.1 12V-2x6 cable, GPU-focused voltage sensing, and a conventional 160 mm PSU layout. The Corsair RM1200x SHIFT is a practical alternative if your case supports side-mounted PSU connectors and you prefer its cable-access design. Both target high-power gaming PCs, but the ASUS emphasizes newer GPU power delivery and compact chassis compatibility.
Q: Should I choose the ROG Strix 1200W Platinum or the older ROG Thor 1200P2?
A: Choose the ROG Strix 1200W Platinum for a newer ATX 3.1 build with a native 12V-2x6 connection, a shorter 160 mm chassis, and lower listed weight. Choose the Thor 1200P2 when its OLED display, RGB integration, additional SATA and peripheral connectors, or bundled sleeved cables are more important. The Thor 1200P2 is longer at 190 mm and is based on an earlier platform generation.
Q: Is the ASUS ROG Strix 1200W Platinum enough, or should I move up to a 1600W PSU?
A: The ROG Strix 1200W Platinum is appropriate for a high-end single-GPU gaming PC, including an RTX 5090-class system when the rest of the configuration fits within the power budget. Move to a 1600W model for multiple high-power accelerators, unusually demanding workstation workloads, extensive overclocking, or a build that needs two native 16-pin GPU cables. A 1600W unit provides more capacity but is typically longer and heavier.
Q: Is this power supply suitable for a high-end gaming PC or workstation?
A: Yes. Its 1200W capacity, single 12V rail rated at 100A, ATX 3.1 compliance, PCIe 5.1 support, and native 12V-2x6 cable make it suitable for high-power graphics cards and demanding gaming or workstation systems. It may be more capacity than necessary for lower-power builds.
Q: Does it support modern graphics cards with a 12V-2x6 connector?
A: Yes. The power supply includes one native 12V-2x6 PCIe cable, supports PCIe 5.1, and is compliant with ATX 3.1. It also includes four traditional 6+2-pin PCIe connectors for graphics cards that use conventional power inputs.
Q: Is it fully modular, and does it include the cables needed for a typical high-end build?
A: Yes. It is fully modular, so unused cables can be left disconnected. The included cable set provides one 24-pin motherboard cable, two 4+4-pin CPU cables, one 12V-2x6 PCIe cable, four 6+2-pin PCIe cables, six SATA power connectors, and three peripheral connectors.
Q: Will it fit in a standard ATX case?
A: It uses a standard ATX form factor and measures 160 x 150 x 86 mm. It should fit many ATX cases, but buyers should verify that the case supports a PSU length of at least 160 mm and has enough room for modular cable connections.
Q: Is this PSU quiet during normal use and light gaming?
A: It is designed for low-noise operation. The unit has Lambda A+ noise certification below 20 dB and 0dB technology that can allow near-silent operation during light loads. Fan behavior can increase under sustained or heavy system loads.
Q: Is the ASUS ROG Strix 1200W Platinum worth buying for a high-end gaming PC?
A: It is best suited to high-power systems using flagship GPUs, such as RTX 5080- or RTX 5090-class builds. Its 1200W capacity, ATX 3.1 compliance, native 12V-2x6 cable, Platinum efficiency, fully modular design, and 10-year warranty are useful for demanding systems. For a midrange PC, the capacity and price may be unnecessary.
Q: Is the included 12V-2x6 GPU cable a reason to avoid this PSU?
A: The included cable provides a direct 12V-2x6 connection for compatible GPUs, but some owners have reported loose connector pins, uneven current distribution, or shutdowns during rapid load changes. These are user reports rather than proof of a product-wide defect. Buyers should fully seat and inspect the connector and contact ASUS support if the cable appears loose, damaged, or causes instability.
Q: Is this PSU quiet enough for a low-noise gaming PC?
A: The unit is specified with Lambda A+ noise certification, below-20 dB noise levels, and 0dB fan technology for near-silent light loads. Community discussion generally describes it as quiet during operation, although several owners mention a noticeable single relay click when the PC or PSU turns off. That click is different from continuous operating noise.
Q: Are the cables easy to manage in a typical PC case?
A: The PSU is fully modular and has a compact 160 mm length, which helps case compatibility and lets users install only needed cables. However, owners have repeatedly described the included cables as difficult to arrange because of their flexible, loose appearance. It is a functional setup, but cable management may require extra routing effort or cable combs.