Black Friday is hereShop new DoorbustersShop now

Skip to content
Main Content

Customer Ratings & Reviews

Your price for this item is $219.99
The comparable value price is $254.99

Customer reviews

Rating 4.6 out of 5 stars with 101 reviews

Rating Filter

Rating by feature

  • Value

    Rating 4.6 out of 5 stars

  • Quality

    Rating 4.7 out of 5 stars

  • Ease of Use

    Rating 4.7 out of 5 stars

Pros mentioned filter

Cons mentioned filter

92%would recommend to a friend

Customers are saying

Customers frequently mention the RM1200x power supply's superior performance and ease of use, praising its excellent cable management capabilities and quiet operation. Many reviewers highlight how much easier this power supply makes PC building and maintenance. The robust design and ample power capacity also receive significant positive feedback.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 3 Showing 41-60 of 101 reviews
  • Pros mentioned:
    Cable management

    Rated 5 out of 5 stars

    Cramped space? No problem!

    |
    |
    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The case I was building in was tight with my other Corseair 1200 and this solved the problem. Cable management made easy!

    I would recommend this to a friend
  • Pros mentioned:
    Noise level

    Rated 4 out of 5 stars

    Powerful and quiet.

    |
    |
    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Very quiet under load. Silent when idle. Side mount ports make for clean install. Make sure you have at least 1/2 inch of space between side panel and the PSU. Cables are very stiff and do not bend easy. Includes 12pin GPU cable for cleaner look with no need for adapters. All cables are very long.

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Rated 5 out of 5 stars

    A powerful power supply

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works as it should. No issues at all. Easy set-up.

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Rated 5 out of 5 stars

    great powersupply

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    great psu.......................!!!!!!!!!!!!!!!!!!

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    Works great but wish it had a 12VHPWR connector

    |
    |
    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    So far so good. I took a star off because it does not have a 12VHPWR connection and power cable, so I had to use an adapter for my 4090.

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    A novel take on the power supply with great IO.

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I purchased this PSU specifically for its count of PCIe / CPU power connectors. I needed a minimum of 7 PCIe / CPU connections (5x 8-pin, 2x CPU). This guy has 8, which leaves me some headroom if needed in the future. In terms of what this PSU does differently than others; depending on your case, having the power connectors on the side of the PSU makes for cleaner cable runs & more space. Another significant change in pace is that this PSU is equipped with Corsairs new "Type 5" cables. Which have significantly smaller connectors than before. I'm more or less indifferent to this change, if anything they seem bit more difficult to handle than the larger connectors. But they better match the new 12vhpwr standard. So, I can see why they made this change. I very much wish that they included two of their 12vhpwr cables with a PSU of this wattage (1200w). Typically when you're buying a PSU of this caliber it's to run more than one GPU. It'd be less of a faux paw if you could buy an extra separately... but you can't. Corsair doesn't sell a standalone 12vhpwr cable in their new Type 5 form factor. I had to use one of the 12vhpwr adapters included with my GPUs, which felt bad, but isn't a huge deal.

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Rated 5 out of 5 stars

    Great power supply

    |
    |
    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Amazing product, with great performance. Really needed a good one to upgrade my pc power supply.

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Rated 5 out of 5 stars

    solid PSU

    |
    |
    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    have been using it for about two weeks and no problem, slowly getting ready for the 50xx series to come out.

    I would recommend this to a friend
  • Pros mentioned:
    Power supply

    Rated 5 out of 5 stars

    I like this power supply

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great power supply has its own 12v cable for 40 series video cards . Make sure your case has plenty of side room I have a large case and just barely got the side to close. Could use more flexible and sleeved cables.

    I would recommend this to a friend
  • Pros mentioned:
    Cable management

    Rated 5 out of 5 stars

    Excellent PSU with side mounting connectors

    |
    |
    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The side mounted connectors are an excellent idea meaning I dont have a birds nest inside my case as I can route them in a neat way.

    I would recommend this to a friend
  • Pros mentioned:
    Power supply

    Rated 5 out of 5 stars

    Psu corsair

    |
    |
    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I’ve got plenty of power now for any upgrade to come

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Great quality psu

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Its an A-TIER power supply that is is fitted with enough cables to power a modern pc. The unit claims to use japanese capacitors that are capable of handling very high temperatures (which is excellent). The "SHIFT" feature can be restrictive in some cases. Make sure if your case has a sheath that covers the psu, that you can actually access the cables. Currently runs my B650 AM5 motherboard with a ryzen 7 7800x3d processor and rtx 3070 gpu.

    I would recommend this to a friend
  • Pros mentioned:
    Cable management

    Rated 5 out of 5 stars

    A good value PSU

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    A hefty PSU for a hefty PC rig. I got this not only because of the capacity it puts out. But also because it has the cables coming from the side of it. Leaving space in front of it if you need an HDD drive cage.

    I would recommend this to a friend
  • Pros mentioned:
    Cable management

    Rated 5 out of 5 stars

    Shift your cables!

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The ports being on the side of the PSU make it very easy to keep cables tidy. Previously my Corsair 5000D had a huge rat nest of cables shoved in front, but it made it so much more tidy.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    My pc build

    |
    |
    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Worked great for what i was running which was a core i7 and i think the ram i had was like 48 or higher

    I would recommend this to a friend
  • Pros mentioned:
    Cable management

    Rated 5 out of 5 stars

    Love it

    |
    |
    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Very cool psu to work with and makes for great cable management in alot of cases

    I would recommend this to a friend
  • Pros mentioned:
    Power supply

    Rated 5 out of 5 stars

    Power supply

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great power supply for my new pc build and it’s definitely among the best

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    It’s okay

    |
    |
    Posted . Owned for 7 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Decent psu, had to do an upgrade and ended up having to return it because it was faulty. Alls well though

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Fits Corsair 4000x

    |
    |
    Posted . Owned for less than 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Fits a Corsair 4000x case with ease. Came with all the cables I need to power up an ASUS 4090. I would definitely buy again.

    I would recommend this to a friend
  • Pros mentioned:
    Power supply

    Rated 5 out of 5 stars

    Power supply

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Its the best power supply ever i would never buy another power supply from anyone else

    I would recommend this to a friend
Sponsored