Corsair's Transparent HX1000i Shift Crystal: 1000W Platinum PSU Tested

Corsair's HX1000i Shift Crystal, a 1000W power supply with clear polycarbonate panels on three sides, averaged 92.1% efficiency at 230 VAC and 90.5% at 115 VAC across the nominal load range in Tom's Hardware testing. The unit, built by Channel Well Technology (CWT), holds Cybenetics Platinum certification at both input voltages and complies with the ATX 3.1 and PCIe 5.1 design guides. First shown at Computex 2026, it launched on November 12.

What does the transparent design change?

The product combines the side-mounted connector layout of Corsair's SHIFT line with the digitally monitored HXi platform, Corsair's high-end family positioned below the flagship AX models. Three clear panels reveal the white fan frame, bulk capacitors, coils and white PCBs, turning the internals into part of the build's aesthetics. The chassis measures 150 x 86 x 200 mm, which makes it a long ATX unit that requires a case check before purchase. Side-mounted connectors also demand free space next to the power supply, a good fit for hidden PSU compartments but not for every chassis.

The 1000W model delivers full output continuously at ambient temperatures up to 50°C and carries a ten-year warranty. Corsair did not publish a price at review time. The regular HX1000i SHIFT, which offers the same side connector layout, iCUE integration and iCUE LINK hub, sells for $339.99 at Corsair's store with a fluid dynamic bearing fan and Japanese capacitors.

How does the electrical platform hold up?

Voltage regulation is tight. The 12V rail deviated 1% from 12.10V to 11.98V across the 20% to 100% load range; the 5V rail deviated 1% and the 3.3V rail 0.7%. Ripple suppression leaves 60% margin against the 120 mV ATX limit on the 12V rail, which peaked at 48 mV at full load, and roughly 48% margin on the minor rails, which topped out at 26 mV against a 50 mV limit.

The transient filter uses four Y capacitors, three X capacitors and two inductors. The APFC stage relies on two Infineon 60R099P6 MOSFETs plus two bulk capacitors, a 560 μF and a 470 μF unit at 420 V, for a combined 1030 μF. Two more 60R099P6 parts drive a half-bridge LLC resonant converter, and ten Infineon 014N04LS MOSFETs handle synchronous rectification of the 12V rail. Minor rails come from DC-to-DC converters.

Why do the capacitors matter?

According to the Cybenetics report, Elite supplies the bulk capacitors. The Taiwanese manufacturer is relatively reputable, and the parts are rated for 105°C, but reviewers noted Elite components rarely appear above mid-tier products. The review called the choice a poor match for a premium unit, pointing out the irony that the standard HX1000i SHIFT advertises Japanese electrolytic capacitors while the version built to display its internals uses Taiwanese ones.

The 140 mm NR140HL-RGB fan uses a rifle bearing with a half-domed shaft magnet, rated at 0.55A on 12V. Corsair calls it a magnetic dome bearing design.

How hot and loud does it get?

At 25°C ambient, the fan stays off up to 500W, half the rated output. Noise reaches 31.6 dB(A) at 500W and about 39 dB(A) at full load, a low figure for a 1000W unit. Heatsinks reached 55°C and 58°C at full load.

At roughly 45°C ambient, efficiency dropped only 0.4 percentage points, averaging 91.7% at 230 VAC. The fan turns aggressive beyond 800W, hitting 45.7 dB(A) at 900W and 46.8 dB(A) at maximum output. Heatsinks climbed to 84°C and 89°C, high but within the platform's tolerance.

All protection features triggered correctly. OCP tripped at 148% on the 3.3V rail, 144% on 5V and 132% on 12V; OPP shut down at 1300W.

What is PinProtect+?

The standout feature is PinProtect+, per-pin current monitoring on the native 600W 12V-2x6 connector. When current on a pin exceeds a user-set threshold, the PSU cuts power and the RGB lighting turns red. Reviewers pulled 20A from a single wire and the unit shut down instantly. The integrated iCUE LINK System Hub supports up to 24 devices without a separate hub.

The bundle is spartan: AC cord, four screws, cable ties and a leaflet. Eight Molex connectors across two cables exceed any reasonable build's needs.

Against showy rivals such as the Asus ROG Thor 1000W Platinum II and Lian Li Edge 1000, the Crystal is the only unit that displays its internals outright. Reviewers concluded it earns an easy recommendation for showcase builds if it prices at a reasonable premium over the $339.99 standard SHIFT.