MSI says some of its popular coolers are faulty, issues refunds and replacements for MAG Coreliquid E coolers with bad pumps — impeller impacts the cavity at speeds over 1,600 RPM

MSI MAG CoreLiquid E360 AIO
(Image credit: Tom's Hardware)

MSI Japan apologizes for pump issues on its MAG Coreliquid E-series AIO liquid cooling product line. The company is now offering customers the choice of a refund or a replacement (via Hermitage Akihabara). The faulty pumps are much louder than designed, and the issue exists in four of MSI's AIO liquid coolers.

The impacted coolers are the MAG Coreliquid E240 240mm and the larger MAG Coreliquid E360 360mm models, including the white variations of both coolers for four affected models. The MAG Coreliquid E lineup came out earlier this year, and when we reviewed the MAG Coreliquid E360, we didn't see any pump issues. However, the problem appears widespread enough for MSI Japan to take action.

MSI Japan was scant on the details, but its press release (translated by Google) stated, "When some pumps operate in the 1,600 to 1,800 RPM range, the internal impeller contacts the cavity." It seems like this is more of a quality control issue than something that impacts all pumps for these liquid coolers. Curiously, MSI had implemented a three-phased motor for the MAG Coreliquid E-series coolers that seemingly helped minimize vibrations.

What's a little strange about all of this is that MSI Japan is the one that made the press release, not MSI in general. The MAG Coreliquid E series is sold outside Japan, but it is uncertain if the faulty units are limited to a specific batch sold in the Japanese market. Strangely, MSI itself or other regional branches haven't made a similar press release, though perhaps there are plans to do so. If you're noticing unusual pump noises coming from your pump, you should contact MSI directly to have the problem solved.

This wouldn't be the first time MSI has had to replace customers' AIO coolers. In 2022, the company recalled some MAG Coreliquid R coolers with blockage issues. In that case, the recall was posted on the U.S. version of MSI's website and offered only replacements, with no refund option.

Matthew Connatser

Matthew Connatser is a freelancing writer for Tom's Hardware US. He writes articles about CPUs, GPUs, SSDs, and computers in general.

  • Devoteicon
    Again?! What the hell, MSI. I was part of "R" series recall last year. They sent me the "V2" version and it's been working fine since, so I'll give them that but still come on.
  • Alvar "Miles" Udell
    And this is why I stick with Corsair AIOs.
  • peachpuff
    Topic not long enough...
  • thestryker
    They need much better QA oversight on whomever their ODM for these coolers is. At least they're acknowledging the problem without being forced into it this time. Hopefully the policy is worldwide instead of just NA.
  • Sleepy_Hollowed
    Big Ouch.

    I don't know if it's time to market or what, but they need to slow down with the testing.

    If there's one thing you want your system to have working for a long time it's the cooling, and with those failure rates one would be better served with air cooling even if it's louder.

    The two AIO water cooling systems I've had have lasted around 7 - 9 years (Corsair and DeepCool, though I'd recommend any that doesn't require software, which knocks Corsair off that list nowadays), I'd be livid having to replace one sooner.
  • KyaraM
    Wait, again? What the heck is happening with your QC, MSI?
  • Phaaze88
    LE SIGH... This is a problem with day 1 reviews on AIOs. They only tell part of the story; the rest comes from the user after some time.

    I wish pump manufacturer info was more widely available, 'cause I'm curious to know who made this one.
    The MAGs and MPGs before this one were all Apaltek, which have been problematic, and the MEGs are Asetek, which has been a long trusted OEM.

    Alvar Miles Udell said:
    And this is why I stick with Corsair AIOs.
    Uhh, many of the current brands don't design their own pumps, and share some of the same OEMs.
    Corsair falls in that category. They can screw it up, or get screwed up, too.