Corsair RM750e

Three products share this name. This review covers the current 2025 revision, part number CP-9020295-NA (black) or CP-9020292-NA (white).

750W continuous, single +12V rail rated 62.5A

ATX 3.1 / PCIe 5.1, one native 12V-2x6 connector rated 600W

Fully modular, flat black ribbon-style cables

80 PLUS Gold certified, Cybenetics tested at 88.98% (115V) and 91.24% (230V), which is Platinum-level performance despite the Gold badge

Fan: 120mm rifle bearing, semi-passive Zero-RPM mode up to roughly 360W

Dimensions 150 x 86 x 140mm, warranty 7 years, MTBF 100,000 hours

OEM is HEC, not the CWT platform some sources list

The PSU, an AC power cable, a set of modular cables (24-pin, 2x EPS, one 12V-2x6, SATA, Molex), mounting screws, a warranty registration card, and a case badge.

Corsair also includes a 12V-2x6-to-dual-8-pin adapter cable, useful if your GPU still uses the older 8-pin standard rather than the native connector. No cable ties or a carry pouch, which some rivals in this price range do include.

Standard ATX dimensions at 150 x 86 x 140mm. Corsair lists the weight at 2.0kg, but our measured unit came in at 1.50kg, worth knowing if you're weighing options for a build with limited case support.

Build quality is solid at this price: 105C-rated capacitors throughout, and a fully modular connector panel that keeps unused cables out of your case entirely. It's a plain black box with no RGB or window-facing design elements, which fits its role as a budget-to-midrange workhorse.

Corsair markets this as an 80 PLUS Gold, Cybenetics Gold-noise unit. Independent Cybenetics testing put actual efficiency at 88.98% at 115V and 91.24% at 230V, which lands in Platinum territory, a tier above what Corsair advertises.

The acoustics claim checks out too: measured noise was 19.34 dBA at 115V, down from 28.17 dBA on the 2023 revision and 35.12 dBA on the original 2022 unit. That's a 16 dBA improvement across three hardware revisions sold under one unchanged name, and it's the best reason to make sure you're buying the current part number.

Three different power supplies have shipped under the name RM750e since 2022, with different OEMs, different ATX specs, and in the first revision, no GPU power connector suited for modern cards at all. The only way to tell them apart is the part number on the box: CP-9020248-NA (2022), CP-9020262-NA (2023), or CP-9020295-NA/CP-9020292-NA (2025, black/white).

Corsair's own website currently shows conflicting spec text between pages for the 2023 unit, listing ATX 3.1 features it doesn't actually have. Check the printed part number on the unit itself, not the product page, before you buy or return anything.

Day to day, the 2025 revision is close to silent. It's fan-off below about 360W of load, under 20 dBA to roughly 550W, and only becomes clearly audible past 640W, which most single-GPU gaming builds will rarely touch.

Ripple and load regulation numbers are solidly mid-pack, inside ATX spec but not class-leading. Where it matters more, the unit passes every ATX 3.1 power-excursion test at 120 to 200 percent load, meaning it handles the brief power spikes modern GPUs throw at it without tripping protections.

Independent transient testing found the +3.3V rail deviating 6.8 to 7.0 percent under load, outside the plus or minus 5 percent window ATX spec calls for. The +12V and +5V rails both passed comfortably.

In practice this rarely affects a modern gaming PC, since +3.3V carries a small fraction of total system load on current hardware. It's a real measured fault, not a hypothetical one, so we're flagging it, but it's not a reason to avoid the unit on its own.

7-year warranty, in line with Corsair's mid-range RM line. MTBF is rated at 100,000 hours.

Hold-up time measured at 16.70 ms, under the classic 17 ms floor that older ATX revisions required. ATX 3.1 relaxed that requirement, so it's compliant, but it's worth noting the 2022 and 2023 revisions measured 17.7 ms and 17.2 ms respectively, so this is a small regression alongside the acoustic and efficiency gains.

Winner for value: the MSI MAG A750GL at $94.99. Five dollars more than the RM750e buys a fluid dynamic bearing fan instead of rifle bearing, more connectors, and a 10-year warranty instead of 7. The RM750e's only real edge over it is measured acoustics.

For buyers who want to stay with Corsair, the RM750x at $114.99 is the honest upsell: a 140mm FDB fan, a 10-year warranty, and Cybenetics A+ noise rating.

The Seasonic Focus GX-750 at $98.99 has the best +12V load regulation we've seen in this class, and also carries a 10-year warranty.

Nothing at $80 to $90 is measurably quieter than the RM750e at this efficiency level, that's genuinely its strength.

$89.99 at Newegg and Corsair's own store, down from a $114.99 launch MSRP. It's dropped as low as $79.99 during past promotions, so waiting for a sale is reasonable advice if you're not in a rush.

Best Buy still lists it at full $114.99 MSRP. Older 2022 and 2023 revisions are effectively discontinued, and remaining marketplace listings for them run $140 or more for objectively worse hardware, avoid those entirely.

How do I know which RM750e I'm buying?

Check the part number, not the product name. CP-9020248-NA is the 2022 original, CP-9020262-NA is the 2023 ATX 3.0 revision, and CP-9020295-NA (black) or CP-9020292-NA (white) is the current 2025 ATX 3.1 unit this review covers.

Is the RM750e made by CWT?

No. All three RM750e revisions use an HEC platform. The CWT claim circulating online has no primary source, and CWT actually builds Corsair's RM750x, a different product.

Why does Corsair's website show conflicting specs for this PSU?

Corsair's page for the 2023 part number currently displays ATX 3.1 and PCIe 5.1 spec text that contradicts how that unit actually shipped, and how retailers still list it. Trust the part number on the box over the webpage.

Is the RM750e quiet?

The current 2025 revision is very quiet, measured at 19.34 dBA average, fan-off below roughly 360W of load. It's a real, measured improvement over both earlier revisions of this PSU.

Does the RM750e handle GPU power spikes safely?

Yes. It passes every ATX 3.1 power-excursion test at 120, 160, 180 and 200 percent load, which covers the brief transient spikes modern GPUs pull under load.

Does the 3.3V rail issue affect gaming performance?

Unlikely. The measured deviation exceeds ATX spec on paper, but +3.3V carries very little of a modern gaming PC's total load, so it's a measured flaw more than a practical one.

Is the RM750e enough for an RTX 5070 Ti build?

Yes. The RTX 5070 Ti draws 300W against NVIDIA's 750W minimum recommendation, comfortable with any current CPU.

Will it run an RX 9070 XT?

Wattage is fine at 304W, but count the PCIe 8-pin connectors on your specific unit before buying a partner card that needs three. Corsair's own documentation disagrees with itself on the count, so verify what's actually in the box.

Should I buy the RM750e or spend more on the RM750x?

If your budget allows the extra $25, get the RM750x for the FDB fan and 10-year warranty. If price is the deciding factor, the RM750e at $89.99 is a legitimate choice, though the MSI MAG A750GL at $94.99 arguably beats both on value.