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CORSAIR HX1200i (2025) Fully Modular Ultra-Low Noise ATX Power Supply with 12V-2x6 Cable – ATX 3.1 & PCIe 5.1 Compliant, Cybenetics Platinum Efficiency, Fluid Dynamic Bearing Fan – Black
- Fully modular cabling,so you connect only the cables your system needs.
- Compliantwith the ATX 3.1 powerstandard from Intel®,supporting the PCIe Gen 5 platform and resisting transient power spikes.
- A 140mm fluid dynamic bearing (FDB) fan delivers extremely quiet and long-lasting fan performance.
- Powerful CORSAIR iCUE software enables you to create custom fan curves, monitor powersettings, and toggle between single to multi-rail overcurrent protection
- (OCP) on-the-fly.
- Zero RPM fan mode for near-silent operation at low to medium loads.
- 100% Industrial-grade, 105°C rated Japanese electrolytic capacitors ensure unwavering power and reliability.
- 80 PLUS Platinum certified for up to 92% efficiency, for exceptionally low power consumption, less noise, and cooler temperatures.
- Supports Modern Standby sleep mode for extremely fastwake-from-sleep times and better low-load efficiency.
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Overview
Specs
Reviews (274)
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Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 5 years
- Limited Warranty period (labor): 5 years
- Read full details
Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by Newegg.com's 30-Day Return Policy.
- Read full return policy for details.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-510-657-8747
- Support Website
- View other products from Corsair
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The CORSAIR HX1200i (2025) is a 1200W fully modular ATX 3.1 power supply built for high-end gaming PCs and workstation builds that need quiet operation, strong efficiency, PCIe 5.1/12V-2x6 readiness, and software-based power monitoring.
Recommended For
- Builders pairing a flagship GPU with a high-end CPU who want native ATX 3.1 / PCIe 5.1 support and a bundled 12V-2x6 cable, instead of relying on older adapters in a new enthusiast build.
- Quiet-PC enthusiasts running a gaming or workstation tower that often idles or stays under moderate load, where the fan-stop behavior and low measured noise matter more than RGB or cosmetic extras.
- Users who actively monitor and tune their system power behavior through software, such as setting custom fan curves or switching single-rail and multi-rail OCP in iCUE.
- Creators, developers, or power users building one long-life desktop and willing to pay more for high efficiency, low standby draw, and a premium PSU platform with extensive protections and a long warranty.
Real-World Use Scenarios
- Building a high-end gaming PC with a recent GeForce RTX card and a power-hungry CPU, the user can run a single flagship GPU setup with native 12V-2x6 cabling and typically gets stable power delivery without needing adapters or worrying about brief GPU power spikes.
- For a workstation that spends long hours on rendering, simulation, or AI/GPU-heavy tasks, the user is trying to keep a demanding system running for extended sessions, and the expected experience is consistent output with low fan noise for much of the load range and good efficiency under sustained use.
- In a quiet desktop build for gaming, editing, or daily work, the user wants the PC to stay unobtrusive at idle and moderate loads, and the likely result is that the PSU often remains effectively silent until system power draw gets much higher.
- For enthusiasts who tune and monitor their systems, the user is trying to watch PSU behavior and adjust fan or rail settings from software, and the likely experience is more control over noise and protection behavior than with a standard non-digital power supply.
- During a clean custom build with lots of drives, EPS leads, and GPU cables, the user is trying to manage airflow and avoid excess wiring, and the expected outcome is easier cable routing because only the needed modular cables have to be installed.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | High-performance gaming and workstation desktops that need up to 1200 W, ATX 3.1 / PCIe 5.1 compatibility and multi-GPU support |
| Power And Ratings | 1200 W continuous output |
| Efficiency And Certifications | 80 PLUS Platinum certified with up to 92% efficiency |
| Form Factor And Compatibility | ATX 3.1 standard, PCIe 5.1 certified full‑modular PSU; SLI / Multi‑GPU ready and noted compatibility with NVIDIA 4000 series and AMD Ryzen 7000 series GPUs |
| Connectors And Cables | Fully modular cabling; includes 1 × 24‑pin ATX, 2 × EPS (8‑pin), 5 × PCIe (6/8‑pin), 8 × SATA and 6 × PATA peripheral connectors (internal connector list also reports 14 peripheral connectors total) |
| Cooling And Fans | Air-cooled with a single 140 mm fluid dynamic bearing fan and Zero RPM mode for near‑silent operation; Cybenetics A noise rating |
| Electrical Input | Input 100–240 V AC, 47–63 Hz; input current 15 A–7.5 A |
| Physical Dimensions And Weight | 7.87 L × 5.91 W × 3.39 H inches; item weight 5.3 lb; package weight 4.672 kg; color Black |
| Warranty And Reliability | 10-year warranty; MTBF 100,000 hours; 100% industrial-grade 105°C Japanese electrolytic capacitors |
| Software And Features | Corsair iCUE software support for monitoring and fan customization; Zero RPM fan mode; Multi‑GPU ready |
| Model Identifiers | Brand: CORSAIR; Series: HX series; Model / Model Name / Part Number: CP-9020307-NA (CORSAIR HX1200i); Manufacturer: Corsair |
Reference Q&A
Q: Should I choose the Corsair HX1200i (2025) over a 1000W Gold PSU like the Corsair RM1000x SHIFT?
A: Choose the HX1200i (2025) if you are building around very high GPU power draw, want more overhead for transient spikes, or value Platinum efficiency and iCUE-based monitoring. Corsair positions HXi above RMx SHIFT for higher-end builds, with higher efficiency and digital control features. A 1000W Gold unit like the RM1000x SHIFT is usually the more practical fit for strong single-GPU systems that stay comfortably below 1000W and do not need the extra monitoring or headroom.
Q: Is the Corsair HX1200i (2025) worth it over the older HX1200i?
A: The 2025 HX1200i is the better choice if you want native ATX 3.1 and PCIe 5.1 support, an included 12V-2x6 cable, and updated compatibility for current high-end GPUs without relying on adapters. Review coverage describes it as a modest platform update rather than a full redesign, so the upgrade makes the most sense for a new build or for users moving to newer GPUs and wanting the latest power standard support. If you already own an older HX1200i and your system is stable, the main gain is standards compliance and cable convenience rather than a major change in core PSU behavior.
Q: Should I buy the Corsair HX1500i instead of the HX1200i?
A: Buy the HX1500i if your build needs unusually high sustained power, such as multi-GPU use, aggressive future expansion, or simply more overhead than 1200W provides. Professional review coverage indicates that the HX1500i keeps similar efficiency, thermals, features, and connector behavior while adding 25% more capacity. For most single-GPU enthusiast PCs, the HX1200i is the more balanced choice because it keeps the same platform family and feature set without moving into 1500W unless your power budget actually calls for it.
Q: Is the Corsair HX1200i (2025) a better fit than a 1000W Platinum PSU for an RTX 5090-class build?
A: The HX1200i (2025) is the safer fit when you want extra margin for a flagship GPU, high-end CPU, and transient spikes, especially if the system may be overclocked or upgraded later. Hardware Busters specifically frames the HX1200i as suitable for a high-end system with an RTX 5090 and Ryzen 9 9950X3D-class processor, while Tom's Hardware notes 1000W as the recommended PSU level for an RTX 5090 Founders Edition. That means a quality 1000W unit can still be enough for many builds, but the HX1200i gives more headroom and reduces the chance that a near-limit configuration drives the PSU choice.
Q: Is the CORSAIR HX1200i (2025) a good choice for a high-end RTX 4090 or RTX 5090 build?
A: Yes, it is a strong fit for high-end GPU builds that need native next-generation power support. The HX1200i is an ATX 3.1 PSU with two PCIe 5.1 12V-2x6 cables included, which makes it better suited to modern flagship GPUs than older PSUs that rely on adapters. It is most suitable for users building a power-hungry gaming or workstation PC and who want extra headroom for transient spikes, future upgrades, and quieter operation under partial load.
Q: Is this power supply quiet enough for a low-noise or near-silent PC?
A: Yes. The HX1200i is well suited to quiet builds because it uses a 140 mm fluid dynamic bearing fan and supports Zero RPM mode, so the fan can stop completely at low to medium loads. It is a better fit than many mainstream units if low noise is a buying priority, though it is still a large 1200 W PSU intended for higher-end systems rather than small or budget builds.
Q: Who should buy the HX1200i instead of a cheaper 1000W or 1200W Gold PSU?
A: The HX1200i makes the most sense for buyers who want premium efficiency, lower noise, digital monitoring, and more control over power behavior. Compared with a cheaper Gold-rated alternative such as the RM1200e, the main advantages are Platinum efficiency, iCUE-based monitoring and fan control, and the ability to switch between single-rail and multi-rail OCP. If your system is mid-range or you do not need software control, a less expensive Gold PSU is usually the better value.
Q: Does the HX1200i come with the cables most builders need, or will I likely need extras?
A: For most standard high-end builds, it should include the needed core cables. The HX1200i is fully modular and includes dual 12V-2x6 GPU cables, two EPS CPU power connectors, five PCIe 8-pin connectors, and eight SATA connectors. Most buyers would only need extras for cosmetic cable replacements, unusual multi-GPU setups, or very storage-heavy systems.
Q: Is the HX1200i worth it if I am building a normal gaming PC and not an extreme system?
A: Usually no. The HX1200i is best for upper-tier gaming PCs, creator workstations, or buyers who specifically want 1200 W capacity, native 12V-2x6 support, low noise, and software-level PSU control. For a typical gaming build, it is often more power and cost than necessary, and a good 850 W to 1000 W ATX 3.x unit will usually be the more practical choice.
Q: Is the HX1200i (2025) a good fit for an RTX 5090 or other high-end GPU build?
A: Yes, it is a sensible fit for high-end single-GPU systems that benefit from a 1200W PSU and a bundled 12V-2x6 cable. Reddit discussions around this model repeatedly focus on RTX 5090 use, cable support, and ATX 3.1 readiness. For buyers building around a power-hungry GPU and wanting a current-spec Corsair unit, this model matches that use case well. It is less compelling if your system stays far below this power range.
Q: Should I buy the HX1200i (2025) instead of keeping an older HX1200i with an adapter?
A: Buy the 2025 version if you specifically want ATX 3.1 / PCIe 5.1 compliance, the included 12V-2x6 cable, and the newer platform features. If your existing HX1200i is working well and your actual power use is much lower than 1200W, the upgrade is more about standards, cable convenience, and platform refresh than a necessary performance jump.
Q: Who is the HX1200i (2025) best suited for?
A: It is best suited for builders who want a high-capacity, low-noise, fully modular PSU for a premium desktop, especially with newer GPUs and CPUs. The product data points to quiet operation, Platinum efficiency, iCUE monitoring, and multi-rail or single-rail OCP control. It is a stronger match for enthusiast gaming or workstation builds than for mainstream PCs, where 1200W may be unnecessary.
Q: What are the main trade-offs of choosing the HX1200i (2025)?
A: The main trade-offs are cost, capacity overhead, and some buyer confusion around connector terminology and version labeling. Community discussion repeatedly centers on whether the unit has a native PSU-side 12V-2x6 connector, what cable version is included, and whether older or mislisted stock is being shipped. In practice, this is a better choice for buyers who value current standards and monitoring features than for buyers simply looking for the cheapest 1200W PSU.