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Corsair HX1000i Fully Modular Ultra-Low Noise ATX Power Supply - ATX 3.1 & PCIe 5.1 Compliant - Fluid Dynamic Bearing Fan - CORSAIR iCUE Software Compatible - 80 Plus Platinum Efficiency - Black
- Fully Modular Cabling: Connect only the cables your system needs, making clean and tidy builds easy.
- Intel® ATX 3.0 Certified: Compliant with the ATX 3.0 power standard, supporting the PCIe Gen 5 platform and resisting transient power spikes.
- 140mm Fluid Dynamic Bearing (FDB) Fan: Delivers extremely quiet and long-lasting fan performance.
- Powerful CORSAIR iCUE Software: Create custom fan curves, monitor power settings, and toggle between single to multi-rail overcurrent protection (OCP) on-the-fly.
- Zero RPM Fan Mode: At low and medium loads the cooling fan switches off entirely for near-silent operation.
- 100% Japanese 105°C Electrolytic Capacitors: Premium internal components ensure unwavering power delivery and long-term reliability.
- Fully Digital Platform: Resonant LLC topology and DC-to-DC conversion provides clean, consistent power and minimizes coil whine and noise for quiet operation.
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Corsair HX1000i Fully Modular Ultra-Low Noise Platinum ATX 1000 Watt PC Power Supply - Internal - 3.3 V DC, 5 V DC, 12 V DC, -12 V DC Output - 1000 W - 1 +12V Rails - 1 Fan (s) - NVIDIA SLI Supported - 92% Efficiency
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
- This item is covered by Newegg.com's Extended Holiday Return Policy.
- Read full return policy for details.
We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-510-657-8747
- Support Website
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The Corsair HX1000i is a 1000W fully modular 80 Plus Platinum ATX 3.1 power supply built for high-end gaming and workstation PCs, especially users pairing modern GPUs with a native 12VHPWR connection and wanting quiet operation, clean cabling, and iCUE-based power monitoring.
Recommended For
- Builders pairing a high-end GPU with a power-hungry CPU who want a native 12V-2x6 connection instead of adapter-based cabling, especially for RTX 40/50-class gaming or creator PCs.
- Quiet-PC builders who care about low idle noise and want the PSU fan to stay off or run slowly during everyday work, gaming, and mixed-use loads.
- Users already running Corsair iCUE who want PSU telemetry, fan-curve control, and the option to switch between single-rail and multi-rail OCP inside the same software ecosystem.
- Long-term desktop owners who expect to keep one PSU across multiple upgrade cycles and value Platinum efficiency, a 10-year warranty, and a fully modular cable setup for rebuilds.
- Enthusiast builders who tune and monitor their systems closely and prefer a PSU with digital monitoring rather than a basic install-and-forget unit.
Real-World Use Scenarios
- Building a high-end gaming PC with an RTX 4080, RTX 4090, or similar card: the native 12V-2x6/12VHPWR support and ATX 3.1 transient handling make it a common fit for modern flagship GPU builds, with a cleaner cable run than multi-adapter setups.
- Putting together a quiet premium desktop for gaming or work: at low to medium loads the fan can stay off, so everyday tasks like web use, coding, office work, and light editing are likely to be effectively PSU-silent.
- Running a gaming-and-creator system that can swing quickly from idle to heavy load: users can expect stable operation during gameplay, rendering, or exports without the PSU feeling overstressed, especially in builds with power-hungry CPUs and GPUs.
- Cable-managing a showcase or tempered-glass build: the fully modular layout helps reduce unused cabling, and builders commonly choose this class of PSU when they want a cleaner interior and fewer bulky GPU power adapters.
- Tuning a workstation or enthusiast PC over time: iCUE monitoring and fan-curve control are useful for users who want to watch load behavior, adjust acoustics, or switch rail settings instead of treating the PSU as a fixed black box.
- Upgrading from an older PSU for a next-gen GPU build: the main day-to-day benefit is simpler installation with the right connector out of the box, which reduces reliance on bundled adapters and makes the build easier to route neatly.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | High-performance desktop builds and gaming/workstation PCs that need up to 1000W and native PCIe Gen5/12VHPWR GPU support, with fully modular cabling for cleaner builds |
| Power And Ratings | 1000 W maximum output; DC outputs: +12V @ 83.3A, +3.3V @ 25A, +5V @ 25A, -12V @ 0.3A, +5VSB @ 3A; input 100–240 VAC, 47–63 Hz; input current listed as 13A–6.5A (100–240 VAC) and 10A (200–240 VAC); supports Modern Standby |
| Connectors And Cables | Fully modular cable set including 1× 24‑pin ATX, 1× 12VHPWR (12+4), 2× 8‑pin EPS (4+4), 4× 8‑pin PCIe (6+2), 8× SATA, 2× PATA (4‑pin); detailed cable lengths provided for each cable |
| Cooling And Acoustic | Single 140 mm fluid dynamic bearing (FDB) fan with Zero RPM mode for near‑silent operation at low/medium loads; air-cooled design |
| Efficiency And Components | 80 PLUS Platinum certification (up to 92% efficiency stated) with a fully digital resonant LLC + DC‑to‑DC topology and 100% Japanese 105°C electrolytic capacitors for stable, long‑life power delivery |
| Software And Controls | CORSAIR iCUE compatibility for custom fan curves, power monitoring, and on‑the‑fly switching between single and multi‑rail OCP |
| Form Factor And Physical | ATX (ATX 3.0 compatible) power supply; max PSU length 180 mm; dimensions 7.09 × 5.91 × 3.39 inches; weight 4.4 lb; black finish |
| Standards And Compliance | Compliant with Intel ATX 3.0 power standard and PCIe Gen5 platform requirements; includes safety attestation and 80 PLUS Platinum efficiency certification |
| Package Contents | Includes HX i Series power supply, power cord, DC cables, mounting screws, and cable ties |
| Model Identifiers | CORSAIR HXi Series — HX1000i (2023), Part Number CP-9020259-NA |
Reference Q&A
Q: Should I buy the Corsair HX1000i or the Corsair RM1000x SHIFT for a high-end gaming PC?
A: Choose the Corsair HX1000i if you want higher efficiency, digital monitoring through iCUE, and the option to switch OCP behavior for a more tunable enthusiast build. Choose the RM1000x SHIFT if your priority is easier cable access from the side of the PSU and your case has the required side clearance. In practice, both are modern 1000W units for current GPUs, but the HX1000i is the better fit when efficiency, telemetry, and a more premium feature set matter more than connector placement.
Q: Is the Corsair HX1000i worth it over an 850W PSU?
A: The HX1000i makes more sense than an 850W unit when you are building around a flagship or near-flagship GPU, want more headroom for transient spikes, or expect to keep the PSU through multiple upgrade cycles. An 850W model is usually the more practical choice for systems with mid-range to upper-mid-range graphics cards and no aggressive power tuning. The trade-off is simple: 850W is often enough today, while the HX1000i gives more upgrade margin and lower stress at high loads.
Q: Corsair HX1000i vs Seasonic Vertex PX-1000: which one should I choose?
A: Choose the HX1000i if you want software-based monitoring, rail control, and tighter integration with a Corsair-focused build. Choose the Seasonic Vertex PX-1000 if you want a similarly modern Platinum-class ATX 3.1 PSU in a shorter 160mm chassis with a longer stated warranty. Both target premium builds with native support for current GPU power standards, so the main decision is feature preference: digital control and ecosystem integration on the Corsair side, or a more compact physical design and longer warranty on the Seasonic side.
Q: Is the 2023 Corsair HX1000i a better buy than the older HX1000i generation?
A: Yes, the 2023 HX1000i is the more straightforward choice for a new build because it aligns with newer ATX 3.x and PCIe 5.x requirements and includes native next-generation GPU cabling. The older HX1000i generation is still relevant for existing systems, but the newer model reduces adapter dependence and is better matched to current high-power graphics cards. For most buyers starting fresh, the newer HX1000i is the safer long-term fit.
Q: Is the Corsair HX1000i a good choice for a high-end gaming PC with an RTX 4080 or RTX 4090?
A: Yes for most high-end builds. The HX1000i provides 1000W, supports ATX 3.x transient spikes, and includes a native 12VHPWR cable, so it is a practical fit for power-hungry modern GPUs. It makes the most sense for builders who want extra headroom, quieter operation, and cleaner cabling rather than the lowest possible price.
Q: Who is the HX1000i best suited for?
A: It is best suited for enthusiast gaming PCs, creator workstations, and upgrade-focused builds that use high-end CPUs and GPUs. It is less ideal for mid-range systems that do not need 1000W, digital monitoring, or Platinum efficiency, because a lower-cost Gold PSU is often enough for those builds.
Q: Is the HX1000i worth paying more for than a typical 1000W Gold power supply?
A: Usually yes only if you value quieter operation, higher efficiency, iCUE monitoring, and switchable single-rail or multi-rail OCP. If you just need reliable 1000W output for a standard gaming build, a cheaper Gold-rated fully modular PSU may offer better value. The HX1000i is the better fit for buyers who care about acoustics, monitoring, and premium platform features.
Q: Does the HX1000i support cable upgrades and clean custom builds?
A: Yes. It is fully modular, so unused cables can be left out, and retail Q&A around this model commonly focuses on cable compatibility and included next-gen GPU power cabling. That makes it a strong option for builders who prioritize neat routing, custom sleeved cables, and easier future upgrades.
Q: Is the HX1000i a quiet PSU for everyday use and low-load operation?
A: Yes. It is a strong choice for users who care about low noise because it uses a 140mm fluid dynamic bearing fan and supports Zero RPM mode at low to medium loads. The trade-off is size and price: it is a premium 180mm PSU, so buyers should confirm case clearance and decide whether near-silent operation is worth the extra cost.
Q: Is the Corsair HX1000i 2023 worth buying over the older HX1000i revision?
A: It makes the most sense if you specifically want the newer HXi revision with ATX 3.0-era support, Modern Standby, iCUE monitoring, and the bundled 12VHPWR cable. If the older HX1000i is meaningfully cheaper, community discussion suggests performance is broadly similar for many builds, so the newer model is mainly a convenience and standards-update purchase rather than a clear performance upgrade.
Q: Who is the Corsair HX1000i 2023 best suited for?
A: It is best suited for high-end desktop builds that need a quiet 1000W PSU, native support for current high-power GPUs through a 12VHPWR cable, and monitoring features through iCUE. It is a stronger fit for enthusiast gaming PCs or workstations than for mid-range systems, where a lower-wattage or less expensive Platinum/Gold unit may be the more practical choice.
Q: What are the main trade-offs of choosing the HX1000i 2023?
A: The main trade-offs are price, physical size, and feature complexity. You are paying for Platinum efficiency, digital monitoring, and very quiet operation, but not every buyer needs those extras. At 180 mm long, it also needs more case clearance than compact ATX PSUs, so it is less ideal for tighter cases or value-focused builds.
Q: Is the HX1000i 2023 a good choice if I want a quiet PSU?
A: Yes, if low noise is a priority, this is one of the clearer reasons to choose it. The product is built around quiet operation with a 140 mm FDB fan, Zero RPM mode at lower loads, and digital fan control in iCUE. The trade-off is that you are paying a premium for that quieter, more feature-rich design.