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[Amazon Canada] Corsair RMx Series, RM1000x, 1000 Watt, Fully Modular Power Supply, 80+ Gold Certified, 10 Year Warranty - $129.99

[OP]
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Nov 13, 2006
4113 posts
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Markham, ON

[Amazon Canada] Corsair RMx Series, RM1000x, 1000 Watt, Fully Modular Power Supply, 80+ Gold Certified, 10 Year Warranty - $129.99

I've been keeping an eye on this PSU - Corsair RMx Series, RM1000x, 1000 Watt (1000W), Fully Modular Power Supply, 80+ Gold Certified, 10 Year Warranty - CP-90
3C shows it's been the lowest price. Great reviews and warranty on it as well.

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43 replies
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May 24, 2007
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Kelowna
That’s a great power supply but I don’t understand the need for 1000w anymore. CPU’s, video cards and pretty much every component these days take way less power than they used to. Even addding an SSD , 2 video cards in SLI and a 3 or 4 hard drives still doesn’t warrant it.

600w seems like plenty for the average guy and 700w to 750w for the guys overclocking or throwing in a bunch of hard drives seems reasonable. Thoughts?
Sr. Member
Nov 26, 2014
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Toronto, ON
Hexxed wrote:
Dec 15th, 2018 9:14 am
That’s a great power supply but I don’t understand the need for 1000w anymore. CPU’s, video cards and pretty much every component these days take way less power than they used to. Even addding an SSD , 2 video cards in SLI and a 3 or 4 hard drives still doesn’t warrant it.

600w seems like plenty for the average guy and 700w to 750w for the guys overclocking or throwing in a bunch of hard drives seems reasonable. Thoughts?
threadripper ? 250w OC to 300w+?
Intel is even higher
1080ti 250w times 2 500w

This case 1000w is not even enough ( you don’t wanna your psu always under full load)
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May 19, 2005
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Overkill for most people, but if you want a quality fully modular unit with low noise and 10 years warranty, are there any cheaper? The RM850x that I was going to get costs more. 750 is even more. Save $10 and get the RM650x?

Fan doesn’t even turn on until it hits 400watts so for most people this will be completely silent/fanless.
Some people just don't get that online forum posts shouldn't always be taken seriously.
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Oct 19, 2003
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Nobody needs 1000W any more, if they ever did. SLI is pretty much dead and I don't see it ever returning at this point in any meaningful way and even a 2990WX uses only like 180W at full load.

I was able to run a 250W tdp GPU and a 84W CPU plus everything else fine on a 450W SFX PSU in an ITX machine without any problem for gaming for years. Nothing is going to explode just because you're using more than 50% of the maximum capacity of the PSU.

That being said having 1000W in the machine and not using it isn't going to hurt anything.
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Jun 1, 2008
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Thinking of getting this to replace my tx750 as a pre emptive measure.

My tx750 is still going strong, but it's almost 10 years old at this point. Just don't want it to take out my system if it decides to give up
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Aug 22, 2011
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Good deal, as the decline of crypto is finally bringing these down to reasonable price points.
Newbie
Sep 9, 2008
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Thanks OP! Bought one for a new build...never too much juice. This is an excellent PS. I have a RM850x with 2xMSI 1070ti over a year now. It ran cool, silent, and the fan rarely came on.
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May 19, 2005
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Just checked the power efficiency curve diagram and it gets 90%+ efficiency between 200 to 600 watts. It’s basically Platinum rated at those ranges. Also completely silent under 400watts. OK, I’m sold. Just in time for my deep learning rig build.
Some people just don't get that online forum posts shouldn't always be taken seriously.
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Oct 21, 2006
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Thanks OP. I was looking at 750-850w PSUs for my needs in this price range but more is indeed more when you're paying the same price.

180mm is kinda long for my case there's riveted 3.5" bays getting in the way, but i'll mull it over and see if I can make it work.
Sr. Member
May 22, 2015
805 posts
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Vancouver
Since Corsair doesn't manufacture its own internals, I'm pretty sure the RMx line is made by Channel Well (who supply the budget CM line) not Seasonic or Flextronic (better) like the original RM/AX enthusiast models.
Last edited by mikebc on Dec 15th, 2018 11:07 am, edited 2 times in total.
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soul_taker wrote:
Dec 15th, 2018 10:38 am
Thanks OP. I was looking at 750-850w PSUs for my needs in this price range but more is indeed more when you're paying the same price.

180mm is kinda long for my case there's riveted 3.5" bays getting in the way, but i'll mull it over and see if I can make it work.
RM850x (2018) is $5 more but it’s 160mm instead of 180mm of the older models and this RM1000x
Some people just don't get that online forum posts shouldn't always be taken seriously.
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Oct 20, 2004
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General rule of thumb, if your Max load is 500w sustained for long periods, a 1000w PSU would be the most effective due to the efficiency curve.

That being said loads from 200W up to about 700w sustained would use this PSU to its best potential.

The below is from TechPowerUp, and is for 230Vac, so use this as reference and note that we in NA use 120Vac so the efficiency will be slightly less.
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Last edited by flame02 on Dec 15th, 2018 2:03 pm, edited 3 times in total.

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