Seasonic RX-1600: First 80 PLUS Ruby ATX PSU

Quick answer: Seasonic's PRIME ENTERPRISE RX-1600 is the first standard ATX power supply listed by 80 PLUS at the new Ruby level for 115 V internal use. The official CLEAResult record identifies it as a 1,600 W ATX 3.1 unit and reports 95.27% efficiency at 50% load. Ruby also adds a 5% load test, making low-load efficiency part of the top-tier requirement.

What Seasonic announced

Seasonic announced the PRIME ENTERPRISE RX-1600 in August 2026 as the first 115 V ATX PC power supply to earn 80 PLUS Ruby certification. Ruby began as the program's highest efficiency tier for demanding data-center power supplies, but the RX-1600 shows that a non-redundant, standard ATX platform can also meet a Ruby specification.

The model is rated for 1,600 watts, follows the ATX 3.1 form factor, and is positioned for high-end desktops, professional workstations and AI systems. The certification listing verifies efficiency and power factor under defined laboratory conditions; it does not yet tell us the retail price, launch date in Iraq, acoustic performance or full electrical-quality results.

Official RX-1600 efficiency results

CLEAResult's public certification record reports the following measurements at 115 V. The “Ruby minimum” column uses the official 115 V internal non-redundant rating table.

Rated load	Ruby minimum	RX-1600 measured	Measured power factor
5%	85%	88.88%	0.9575
10%	91%	93.35%	0.9746
20%	93%	95.38%	0.9831
50%	95%	95.27%	0.9914
100%	91%	92.81%	0.9944

At 5% load, a nominal 1,600 W PSU is supplying roughly 80 W. That operating point matters because an oversized workstation may spend many hours browsing, coding or waiting for a workload rather than running near peak power. The RX-1600's measured 88.88% result clears the 85% Ruby threshold at that point.

80 PLUS Ruby vs Titanium at 115 V

For a 115 V internal non-redundant PSU, Ruby raises the minimum efficiency by one percentage point at the traditional 10%, 20%, 50% and 100% load points compared with Titanium, and adds a required 5% measurement.

Load	80 PLUS Titanium	80 PLUS Ruby
5%	No requirement	85%
10%	90%	91%
20%	92%	93%
50%	94%	95%
100%	90%	91%

A one-point gain sounds small, but achieving it when conversion efficiency is already above 90% requires reducing a meaningful share of the remaining loss. Less loss means less heat inside the PSU and less heat for the room or cooling system to remove. Actual electricity savings depend on the computer's load profile, local electricity cost and the efficiency of the PSU being replaced.

Consumer Ruby and data-center Ruby are not the same table

This distinction is important. The 80 PLUS program publishes separate requirements for different voltage and application classes:

115 V internal non-redundant Ruby, used by the RX-1600 certification, requires 85%, 91%, 93%, 95% and 91% efficiency at 5%, 10%, 20%, 50% and 100% load.
230/277 V internal redundant Ruby targets data centers and requires 90%, 91%, 95%, 96.5% and 92% at the same load points, with additional power-factor requirements.
Other high-voltage AC and DC redundant categories have their own tables.

Therefore, the 96.5% figure often associated with Ruby data-center PSUs is not the minimum used for this 115 V ATX certificate. Comparing products requires checking the exact voltage and application category on the certificate.

What the certification proves—and what it does not

80 PLUS certification verifies AC-to-DC conversion efficiency and power factor at specified test points. It is valuable evidence, but it is not a complete power-supply review.

Ruby certification alone does not certify:

noise level or fan behavior;
voltage regulation, ripple or transient response;
protection-circuit behavior;
component durability or long-term reliability;
connector temperatures under sustained GPU loads.

Independent electrical and acoustic testing will still be needed before the RX-1600 can be judged as a complete product.

What it means for PC builders in Iraq

The certification is technically significant, but most gaming PCs in Baghdad, Erbil, Sulaymaniyah or Basra do not need a 1,600 W PSU. A correctly sized, high-quality 750 W to 1,000 W unit may be a better match for many single-GPU systems. A 1,600 W model becomes more relevant for multi-GPU AI workstations, professional compute systems, heavily expanded workstations or hardware with unusually high sustained and transient loads.

There is also a local-voltage caveat: Iraq normally uses approximately 230 V at 50 Hz, while this specific public certificate is for 115 V internal testing. The 115 V results remain a verified engineering achievement, but buyers should not assume identical numbers at Iraqi mains voltage unless Seasonic publishes a corresponding 230 V report.

When choosing a PSU, calculate realistic peak demand, keep appropriate headroom, confirm ATX 3.1 and GPU-cable compatibility, and evaluate warranty, protections and independent reviews. Buying far more wattage than the system needs does not automatically reduce the electricity bill.

Price and availability

As of August 24, 2026, a confirmed retail price and Iraq availability have not been announced in the public material reviewed for this article. AbuAlu will update this page when verifiable regional availability or pricing becomes available.

Frequently asked questions

What is 80 PLUS Ruby?

Ruby is the highest efficiency level currently shown in the 80 PLUS program. Its exact thresholds depend on the PSU's voltage and application category.

Is the Seasonic RX-1600 better than every Titanium PSU?

Not automatically. Its Ruby certificate proves that it passed stricter efficiency targets in the listed 115 V test. It does not by itself compare noise, regulation, protections, reliability, price or performance at 230 V.

Why is the 5% load test important?

High-wattage computers often operate far below maximum output while idle or doing light work. Measuring at 5% rewards designs that remain efficient in that common low-load state.

Do normal gaming PCs need 1,600 W?

Usually not. Power capacity should follow the CPU, GPU, expansion hardware and expected transients. The RX-1600 is aimed primarily at unusually demanding desktops, workstations and AI systems.

Verified sources

Editorial image disclosure: the header is original concept artwork created for AbuAlu and is not a photograph of the Seasonic PRIME ENTERPRISE RX-1600.

Seasonic PRIME RX-1600 Is the First 80 PLUS Ruby ATX PSU