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The CORSAIR HX1500i SHIFT meets the requested rail threshold: CORSAIR rates its +3.3V and +5V outputs at a combined maximum of 150W, 8W above 142W. That makes it a documented match for this specific requirement, but not automatically the right PSU for every PC. Check the system’s total power needs, case clearance, connectors and input voltage before choosing it.
What PSU with at least 142W combined on the +3.3V and +5V rails would you recommend?
The CORSAIR HX1500i SHIFT is one documented option. CORSAIR’s product specifications list a maximum combined output of 150W for the +3.3V and +5V rails. That is 8W above the 142W minimum. The product page lists each rail at 25A; use the combined-output rating, rather than adding the two rail values as if they could each deliver their maximum simultaneously.
This is a specification match, not a finding that the HX1500i SHIFT is the only PSU meeting the requirement. The available specifications do not establish a comparable alternative, so check another candidate’s own product table for its combined +3.3V/+5V maximum.
Check the total output against your build and input voltage
The HX1500i SHIFT’s total rated output depends on input voltage: CORSAIR lists 1500W at 115–240V input and 1200W at 100–115V input. Confirm the voltage available where the PSU will be used, then assess whether the applicable total rating suits the complete system. The 150W rail figure alone does not determine the right overall PSU capacity.
#1 Best Overall
- 80 PLUS GOLD CERTIFIED
- 10-year limited warranty, guaranteeing long term reliable operation
- Fully modular design
- ATX 3.1 & PCIE 5.1
Verify case fit and power connectors
CORSAIR describes the model as ATX 3.1 compliant and PCIe 5.1 ready. Those descriptions do not remove the need to check your particular build: confirm the PSU’s physical dimensions fit the case and that its available connectors meet the motherboard and graphics card requirements. The product specifications and your component manuals are the appropriate references for that check.
What the HXi series guide adds
CORSAIR’s HXi Series guide also lists the HXi models’ +3.3V and +5V rails at 25A each and describes over-voltage, over-current, short-circuit, over-power and over-temperature protection. For this recommendation, the product-specific combined rating of 150W is the key evidence that the HX1500i SHIFT clears the 142W threshold.
Quick Recap
Best Value
- 80 PLUS GOLD CERTIFIED: Delivering gold-level performance with 92% efficiency, ensuring effective power transmission to your components.
- Fully Modular Design: Unique dragon-pattern fully modular cables cut redundant wiring to tidy your chassis, improve airflow and optimize system heat dissipation. With dimensions of 150×150×86mm (5.91×5.91×3.39in), the PSU fits most mainstream ATX cases.
- Support ATX 3.1 & PCIe 5.1: Compliant with the ATX 3.1 standard to fuel high-performance PC components with stability, efficiency, and power spike resistance. Meanwhile, supporting PCIe 5.1 platform withstands 2x transient power excursions from the GPU.
- Dual-Colour 16-Pin Cable: The Dual-color dragon-pattern 12V-2x6 PCI-E 5.1 cable for modern high-end graphics cards. With yellow connector can easily show you whether the cable has been plugged in properly.
- RGB Silent Fan & RGB Lighting Model: This 140mm low-noise fan comes with a silent mode, it outperforms standard 120mm fans in terms of quietness, heat dissipation capability and durability. What's more, the psu features ARGB lighting model, allowing you to adjust the lights style according to your needs.
Rank #4
- Fully Modular: Reliable and efficient low-noise power supply with fully modular cabling, so you only have to connect the cables your system needs.
- Cybenetics Gold-Certified: Rated for up to 91% efficiency, resulting in lower power consumption, less noise, and cooler temperatures.
- ATX 3.1 Compliant: Compliant with the ATX 3.1 power standard from Intel, supporting PCIe 5.1 and resisting transient power spikes.
- Native 12V-2x6 Connector: Ensures compatibility with the latest graphics cards with a direct GPU to PSU connection – no adapter necessary.
- Embossed Cables with Low-Profile Combs: Sleek, ultra-flexible embossed cables look great and make installing and connecting the RMx a breeze.
Rank #3
- Delivers 600W Continuous output at plus 40℃. Compliance with Intel ATX 12V 2. 31 and EPS 12V 2. 92 standards
- 80 PLUS Certified – 80% efficiency under typical load. Power good signal is 100-500 millisecond
- Supports (2) PCI-E 6 plus 2pin Connectors. Active (PFC) Power Factor Correction, MTBF: 100, 000 hours
- Industry Grade Protections: (OPP) Over Power Protection, (OVP) Over Voltage Protection, (SCP) Short Circuit Protection
- Hold up time is 16 millisecond minimum within 60 percent load. Input frequency range 50 - 60 in Hz
Rank #2
- Delivers 500 Watt Continuous output at plus 40 degree. Compliance with Intel ATX 12 Volt 2.31 and EPS 12V 2.92 standards
- 80 PLUS Certified, 80 percentage efficiency under typical load
- Supports (2) PCI E 6plus2pin Connectors. Active (PFC) Power Factor Correction, MTBF: 100,000 hours
- Industry Grade Protections: (OPP) Over Power Protection, (OVP) Over Voltage Protection, (SCP) Short Circuit Protection
- High Quality Components
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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