XPG Core Reactor 750W Power Supply Review

The XPG Core Reactor 750 is a high-performance PSU, compatible with the newest and toughest requirements of the ATX spec.

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XPG Core Reactor 750W
(Image: © Tom's Hardware)

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Protection Features

Check out our PSUs 101 article to learn more about PSU protection features.

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Protection Features

 

OCP

12V: 74A (118.4%), 12.078V 5V: 34.6A (157.27%), 5.015V 3.3V: 34.7A (157.73%), 3.272V 5VSB: 4.7A (156.67%), 4.92V

OPP

885.6W (118.08%)

OTP

✓ (114°C @ 12V heat sink)

SCP

12V: ✓ 5V: ✓ 3.3V: ✓ 5VSB: ✓ -12V: ✓

PWR_OK

Proper Operation

NLO

✓

SIP

Surge: MOV Inrush: NTC Thermistor & Bypass Relay

The OCP at +12V and the OPP triggering points are set correctly. This is not the case, though, with the minor rails which are set way too high. Finally, the over temperature protection is set lower compared to other CWT platforms, because this one doesn't feature a semi-passive operation. 

DC Power Sequencing

According to Intel’s most recent Power Supply Design Guide (revision 1.4), the +12V and 5V outputs must be equal to or greater than the 3.3V rail at all times. Unfortunately, Intel doesn't mention why it is so important to always keep the 3.3V rail's voltage lower than the levels of the other two outputs.

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(Image credit: Tom's Hardware)

DC Power Sequencing Scope Shots

The 3.3V rail is lower than the other two in all test scenarios that we tried. 

Cross Load Tests

To generate the following charts, we set our loaders to auto mode through custom-made software before trying more than 25,000 possible load combinations with the +12V, 5V, and 3.3V rails. The deviations in each of the charts below are calculated by taking the nominal values of the rails (12V, 5V, and 3.3V) as point zero. The ambient temperature during testing was between 30 to 32 degrees Celsius (86 to 89.6 degrees Fahrenheit).

Load Regulation Charts

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(Image credit: Tom's Hardware)

Load Regulation Charts

Efficiency Chart

(Image credit: Tom's Hardware)

Ripple Charts

The lower the power supply's ripple, the more stable the system will be and less stress will also be applied to its components.

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(Image credit: Tom's Hardware)

Ripple Suppression Charts

Infrared Images

We apply a half-load for 10 minutes with the PSU's top cover and cooling fan removed before taking photos with a modified FLIR E4 camera able to deliver an IR resolution of 320x240 (76,800 pixels).

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(Image credit: Tom's Hardware)

IR Images

The temperatures are at normal levels, given the applied conditions, with the +12V board being the hottest part inside the power supply, during these tests. 

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Aris Mpitziopoulos
Aris Mpitziopoulos
Contributing Editor

Aris Mpitziopoulos is a contributing editor at Tom's Hardware, covering PSUs.

19 Comments Comment from the forums
  • Dark Lord of Tech
    Excellent PSU , thanks Aris!
    Reply
  • Duncan Idaho
    Thanks for this complete review.

    But I think this review fails to catch the point that makes this PSU unique: its depth is only 140mm.

    Very few PSUs are able to provide 750W with such shallow depth, and no one does with such a good quality. This is a very rare feat. Cases with little space and most mini-ITX build can benefit from this PSU, I think this should be mentioned.

    Corsair RM-X, with >160mm is the main opponent thorough the review. Although It's fair to compare both PSU's, but we should mention what those 20mm extra do for, example, quiet operation. Corsair RM-X is no contender in this... "space" (no pun intended).
    Reply
  • escksu
    Nay, I don't consider CWT to be the same tier as Seasonic or Superflower. At this price, I rather go for Seasonic. If XPG decides to use Flextronics or Delta, then I am on!!
    Reply
  • reghir
    Well Amazon is now showing $118.49 making this cheaper than the RM750x , must have read this article :)
    10 left as of this posting. Newegg out of stock.
    https://www.amazon.com/XPG-Reactor-750Watt-Certified-COREREACTOR750G-BKCUS/dp/B07ZRWYMNW/ref=sr_1_1?keywords=XPG+CORE+Reactor+750Watt+80&qid=1581816551&s=electronics&sr=1-1
    Reply
  • Darkbreeze
    including two EPS, six EPS, and twelve SATA

    Seems, wrong.
    Reply
  • YuvrajMann
    Thanks for great review, i just have one question regarding this. can this psu avoid sudden pc restarts on power cuts before switching to ups(switching from mains to ups 15<ms) under load/gaming.
    Reply
  • Aeacus
    Here's one interesting thing i found about this PSU;
    TH review claims it to have 10 years of warranty
    Official site says it only has 3 years of warranty, link: http://shop.xpg.com/xpg-core-reactor-atx-power-supply-750w-fully-modular/Moreover, official site doesn't list it's specs either. Just a wall of text as a description. Hard to read description with light grey lettering on white background.
    Reply
  • bignastyid
    Aeacus said:
    Here's one interesting thing i found about this PSU;
    TH review claims it to have 10 years of warranty
    Official site says it only has 3 years of warranty, link: http://shop.xpg.com/xpg-core-reactor-atx-power-supply-750w-fully-modular/Moreover, official site doesn't list it's specs either. Just a wall of text as a description. Hard to read description with light grey lettering on white background.
    That's an odd/shady sales site that is not secured. The info from xpg.com shows 10 years and the specs.
    https://www.xpg.com/us/xpg/641
    Reply
  • Aeacus
    bignastyid said:
    The info from xpg.com shows 10 years and the specs.

    On my end, that linked page doesn't exist.

    Uh-Oh! Not Found

    You’re in the middle of nowhere. The page you requested either was moved or doesn’t exist.

    What you can do:

    Go back Home page
    Contact to me if you believe this happened in error

    Also, when going to xpg.com, then selecting XPG -> Official Store, you'll land on the same store i linked in my reply. So, it is legit.

    Btw, on xpg.com, i could not find any listing of PSUs. There's plenty of other hardware listed there, but no PSUs.
    Reply
  • bignastyid
    Aeacus said:
    On my end, that linked page doesn't exist.



    Also, when going to xpg.com, then selecting XPG -> Official Store, you'll land on the same store i linked in my reply. So, it is legit.

    Btw, on xpg.com, i could not find any listing of PSUs. There's plenty of other hardware listed there, but no PSUs.
    On the site under the XPG drop down choose products(not store) , then pc components on the page that comes up you can select PSU.
    Reply