The Differences between All Corsair Power Supply Units

Most Corsair PSUs are produced by Seasonic, one of the best power supply manufacturers in the custom computer world.

A lot of people underestimate the significance of having a quality-built power supply until that day some random power surge fries everything inside their chassis. Hence, bros dont let bro use bad psu — I hope this guide could help you avoid the worst of those stormy days, and may it be a protector to your rig in dark places, when all other lights go out.

Quick Comparison between Corsair H60, H75, H80, H90, H100 and H110 Liquid Cooling Series

Pay attention to the amperage on the +12V rail if you are building a gaming system.

CX – Basic Series

This is the entry-level of Corsair PSU family, formerly known as CX Builder Series. The CX series has 80-Plus power efficiency so you get a little of that energy saving feature that whereas other generic power supply units lack of.

The internal 120mm fan is sleeve-bearing, meaning it does make a little more noise than the more premium categories. In general, this power supply is ideal for work computers, basic workstations and gaming system (sample builds) on a tight budget.

Those of us who are in need for power supply to replace their older one might also be interested in what the CX series has to offer. In 2013, Corsair added modular models to the CX Series, namely CX600M, CX700M, etc…That gives a great customization for new system builder to tinkle with cable management as an initial learning experience.

Corsair CX430 & CX430M
Minimum noise level
20 dBA up to 20% load.
Maximum noise level
36 dBA
+3.3v
20A
+5v
20A
+12v
32A
-12v
0.8A
+5Vsb
3A
Wattage on +3.3v & +5v
110W
Wattage on +12v
384W
Wattage on -12v
9.6W
Wattage on +5Vsb
15W
Power Efficiency
83% at half load. Maximum 84%.
Corsair CX500 & CX500M
Minimum noise level
21 dBA up to 20% load.
Maximum noise level
35 dBA
+3.3v
25A
+5v
20A
+12v
38A
-12v
0.8A
+5Vsb
3A
Wattage on +3.3v & +5v
120W
Wattage on +12v
456W
Wattage on -12v
9.6W
Wattage on +5Vsb
15W
Power Efficiency
83% at half load. Maximum 84%.
Corsair CX600 & CX600M
Minimum noise level
21 dBA up to 20% load.
Maximum noise level
35 dBA
+3.3v
25A
+5v
25A
+12v
46A
-12v
0.8A
+5Vsb
3A
Wattage on +3.3v & +5v
130W
Wattage on +12v
552W
Wattage on -12v
9.6W
Wattage on +5Vsb
15W
Power Efficiency
83% at half load. Maximum 84%.
Corsair CX700 & CX700M
Minimum noise level
18 dBA up to 20% load.
Maximum noise level
37 dBA
+3.3v
25A
+5v
25A
+12v
62A
-12v
0.8A
+5Vsb
3A
Wattage on +3.3v & +5v
130W
Wattage on +12v
744W
Wattage on -12v
9.6W
Wattage on +5Vsb
15W
Power Efficiency
83% at half load. Maximum 86%.


GS – Pure Gaming Series (Discontinued)

This is Corsair’s non-modular, flashy power supplies that are purely made for Gaming PC Builds. It has a RGB LED just to add that fabulous touch to your gaming rig.

However, the GS series is only rated 80-Bronze efficiency. Though that is a little less than the CX’s but in return the GS series supports SLI / Crossfire Technology (in which setup requires higher power input on the +12V rail). The new GS line also uses pro-active fan control management. When the PSU itself is under certain load or temperature threshold, the ball-bearing fan stays off, simply to promote quietness, Zen and other highly enlightenment stuffs.

According to Corsair, future accessories will be released so you can change the color of the ring around the PSU to match other components. It’d definitely be a party if you have a window side panel chassis to pair with these PSUs.

Corsair GS600
Minimum noise level
0 dBA up to 20% load.
Maximum noise level
38 dBA
+3.3v
25A
+5v
25A
+12v
49A
-12v
0.8A
+5Vsb
3A
Wattage on +3.3v & +5v
150W
Wattage on +12v
588W
Wattage on -12v
9.6W
Wattage on +5Vsb
15W
Power Efficiency
83% at half load. Maximum 85%.
Corsair GS700
Minimum noise level
0 dBA up to 20% load.
Maximum noise level
38 dBA
+3.3v
25A
+5v
25A
+12v
58A
-12v
0.8A
+5Vsb
3A
Wattage on +3.3v & +5v
150W
Wattage on +12v
696W
Wattage on -12v
9.6W
Wattage on +5Vsb
15W
Power Efficiency
83% at half load. Maximum 87%.

EVGA GTX REF vs. Founder’s Edition, Ti, ACX, SC, SSC, FTW, FTW DT and Classified

CS – Mid-range Series

CSM750 Corsair Power Supply CS SeriesAs the gaming industry continue to grow strong for the last few years, gamers are having a hard time to pick out a reliable, high-wattage power supply that doesn’t break the bank.

As you have seen, the the GS series is a great power supply for gaming system but it doesn’t have very good power efficiency and is non-modular. On other hand the TX series coming up next is a professional power supply that runs quiet, modular and labeled 80-Plus Bronze; but of course it’ll come with a price. So Corsair mixes the ingredients and brings forth the CS series — a perfect blend of both world at an affordable cost.

CS-series has 80-Plus Gold power rating, semi-modular cable management, thermally controlled fan that doesn’t pick up much noticeable noise (max at 24 dBA) until system is over 50% load. And to ensure consistent power delivery on such mid-range gaming PC, the CS750M for example, is designed with 62A on the +12V single rail.

That is plenty of power for a SLI/Crossfire setup, bro…. he aint ur bro, dude. Wut? you gonna start on this pal? stop talking to yourself mate.

Last piece of info for those who are interested, the CS-series runs at 90% power-efficient on 50% load, 87% on 100% load (115Vac). It’s very impressive.

TX Entry-Professional Series (recommended for most builds)

All new Corsair TX-M power supply units are semi-modular while its earlier gen TX isn’t.

This was a right direction that Corsair had made because the TX is well loved by custom computer builders. This Series is also a direct step-up from the CX level where the fan is ball-bearing (quieter than sleeved) and larger (140mm). It also has a higher wattage range for system with high-end video cards which inherited from the GS Series.

TX-M Power Efficiency on the other hand, drops to 80 PLUS Bronze but I do not think it is a total deal breaker. The TX/TX-M models are still the best for enthusiasts on a budget.

You do give up a little power efficiency but it is a decent high-wattage modular power supply unit at a good price.

RM Mid-range Quiet Series

Corsair RM450
Minimum noise level
0 dBA up to 40% load.
Maximum noise level
20 dBA
+3.3v
24A
+5v
22A
+12v
37.5A
-12v
0.8A
+5Vsb
3A
Wattage on +3.3v & +5v
110W
Wattage on +12v
450W
Wattage on -12v
9.6W
Wattage on +5Vsb
15W
Power Efficiency
88% at half load. Maximum 90%.
Corsair RM550
Minimum noise level
0 dBA up to 40% load.
Maximum noise level
20 dBA
+3.3v
25A
+5v
25A
+12v
45.8A
-12v
0.8A
+5Vsb
3A
Wattage on +3.3v & +5v
130W
Wattage on +12v
550W
Wattage on -12v
9.6W
Wattage on +5Vsb
15W
Power Efficiency
89% at half load. Maximum 91%.
Corsair RM650
Minimum noise level
0 dBA up to 40% load.
Maximum noise level
20 dBA
+3.3v
25A
+5v
25A
+12v
54A
-12v
0.8A
+5Vsb
3A
Wattage on +3.3v & +5v
130W
Wattage on +12v
650W
Wattage on -12v
9.6W
Wattage on +5Vsb
15W
Power Efficiency
90% at half load. Maximum 91%.
Corsair RM750
Minimum noise level
0 dBA up to 40% load.
Maximum noise level
20 dBA
+3.3v
25A
+5v
25A
+12v
62.5A
-12v
0.8A
+5Vsb
3A
Wattage on +3.3v & +5v
150W
Wattage on +12v
750W
Wattage on -12v
9.6W
Wattage on +5Vsb
15W
Power Efficiency
88% at half load. Maximum 90%.
Corsair RM850
Minimum noise level
0 dBA up to 40% load.
Maximum noise level
20 dBA
+3.3v
25A
+5v
25A
+12v
70.8A
-12v
0.8A
+5Vsb
3A
Wattage on +3.3v & +5v
150W
Wattage on +12v
850W
Wattage on -12v
9.6W
Wattage on +5Vsb
15W
Power Efficiency
89% at half load. Maximum 90%.
Corsair RM1000
Minimum noise level
0 dBA up to 40% load.
Maximum noise level
20 dBA
+3.3v
25A
+5v
25A
+12v
83.3A
-12v
0.8A
+5Vsb
3A
Wattage on +3.3v & +5v
150W
Wattage on +12v
1000W
Wattage on -12v
9.6W
Wattage on +5Vsb
15W
Power Efficiency
90% at half load. Maximum 91%.

HX Mid-range Professional Series

This is the high-end class of Corsair Power Supply Units.

First off, it has a slightly better semi-modular design than the TX-M sisters. Everything is detachable except the essentials: 1 x PCI-E connector, 1 x 24-pin Power Connector, and 1x 4/8-pin EPS Connector.

In its initial release, HX Power Supply Units delivered up to 80 PLUS Silver power efficiency but improved into 80 PLUS Gold Efficiency later. Packing with a good energy-efficient performance, all HX models also use 140mm double ball-bearing fans to cool the internal core. Noise level is moderated by a smart controller that won’t start off the fan until it reaches 40% load, the fans produce roughly 40 dBi at its maximum speed during full load. This means for most of the time you won’t hear a thing from your power supply.

You probably also love HX series for its prettier semi-modular design, high quality component, big wattage on the 12V plus excellent energy efficiency and commendable noise level.

Corsair HX650
Minimum noise level
0 dBA up to 40% load.
Maximum noise level
40 dBA
+3.3v
20A
+5v
20A
+12v
54A
-12v
0.3A
+5Vsb
2.5A
Wattage on +3.3v & +5v
100W
Wattage on +12v
648W
Wattage on -12v
3.6W
Wattage on +5Vsb
12W
Power Efficiency
87% at half load. Maximum 89%.
Corsair HX750
Minimum noise level
0 dBA up to 20% load.
Maximum noise level
34 dBA
+3.3v
25A
+5v
25A
+12v
62A
-12v
0.8A
+5Vsb
3A
Wattage on +3.3v & +5v
150W
Wattage on +12v
744W
Wattage on -12v
9.6W
Wattage on +5Vsb
15W
Power Efficiency
88% at half load. Maximum 89%.
Corsair HX850
Minimum noise level
0 dBA up to 20% load.
Maximum noise level
34 dBA
+3.3v
25A
+5v
25A
+12v
70A
-12v
0.8A
+5Vsb
3A
Wattage on +3.3v & +5v
150W
Wattage on +12v
840W
Wattage on -12v
9.6W
Wattage on +5Vsb
15W
Power Efficiency
88% at half load. Maximum 90%.
Corsair HX1050
Minimum noise level
0 dBA up to 20% load.
Maximum noise level
37 dBA
+3.3v
25A
+5v
25A
+12v
87.5A
-12v
0.8A
+5Vsb
3A
Wattage on +3.3v & +5v
150W
Wattage on +12v
1050W
Wattage on -12v
9.6W
Wattage on +5Vsb
15W
Power Efficiency
87% at half load. Maximum 89%.

AX – High-end Professional Series

You have come to the flagship model of Corsair PSUs. It is the one of the very high-end Corsair fully-modular power suppliers that gives you full control on the wiring work. In term of energy efficiency, the HX is 80 PLUS Gold certified so it does have better rating at half load while maintaining a stable 87% or above at full load.

HX series is inherited the same fan control technology from the GS series. The fan will not spin unless the it reaches a certain temperature degree or reaches a certain load and again, to ensure quietness. Both AX and HX produce a fairly suppressed noise level that usually fixed at 40 dBi or less, whereas the rest of their siblings; such as CX, GS and TX could generate up to 45 dBi (imagine radio noise in the background).

So for those of us who want full modular capability, solid power delivery without losing the silence you would be better off going with AX Power Supply series, though the cost is steeper. Finally, if you are one of those very enthusiast system builders who need more than what the HX 1050 can offer, your next option would be the AX1200 — only for the fact that you want to stick with Corsair :D

Update

In 2012, Corsair released the new AX Platinum Edition (replacing the old standard AX above) where they practically optimized the power efficiency of the AX line to the 90% Platinum standard. This line-up only houses the two models: the 760 Watts and 860 Watts.

Later in the same year, Corsair managed to introduce the new i-version of the AX Platinum featuring intelligent digital fan and temperature monitor link. This add-on allows you to connect the power supply to one of the motherboard headers and use Corsair proprietary software to take more control of your PSU (monitoring +12V rail and control fan speed). The digital edition of AX Platinum series comes with the same 760 Watts and 860 Watts similar to the non-i edition, plus an addition of the 1200 Watts model.

Keep note that even though they are the same Series, the regular non-i AX Platinum is manufactured by the renowned Seasonic with better fan components, while the digital version is done by Flextronics.

Corsair AX760
Minimum noise level
0 dBA up to 60% load.
Maximum noise level
30 dBA
+3.3v
25A
+5v
25A
+12v
63A
-12v
0.5A
+5Vsb
3A
Wattage on +3.3v & +5v
125W
Wattage on +12v
756W
Wattage on -12v
6W
Wattage on +5Vsb
15W
Power Efficiency
91% at half load. Maximum 91%.
Corsair AX860
Minimum noise level
0 dBA up to 60% load.
Maximum noise level
30 dBA
+3.3v
25A
+5v
25A
+12v
71A
-12v
0.8A
+5Vsb
3A
Wattage on +3.3v & +5v
125W
Wattage on +12v
852W
Wattage on -12v
6W
Wattage on +5Vsb
15W
Power Efficiency
91% at half load. Maximum 91%.
Corsair AX1200i
Minimum noise level
0 dBA up to 30% load.
Maximum noise level
25 dBA
+3.3v
30A
+5v
30A
+12v
100.4A
-12v
0.8A
+5Vsb
3.5A
Wattage on +3.3v & +5v
180W
Wattage on +12v
1204.8W
Wattage on -12v
9.6W
Wattage on +5Vsb
17.5W
Power Efficiency
90% at half load. Maximum 92%.

Also Read:

10 Most Quiet Power Supply Units for your Zen PC Build
5 Best Mini-ITX Chassis for A Petite Gaming and HTPC Build

Leave a Reply

12 Comments on "The Differences between All Corsair Power Supply Units"

Datboo

I was thinking of getting a Corsair Tx550M Black and grey-ish label are those good? Since i dont wanna fry everything this is my first gaming pc and i really dont wanna blow up my money 😕

mousavi

hi
i have a rm850i psu.i want to turn on fan by software before warming(less than 40% load) but is not possible.
please add this feature to corsair link software.

Brad

Does anyone know if the CS range (550W) has surge protection?

DANIEL

i bought the RM1000X

Matt

Can you update this with the VS series please

Just had my AX850 crap out on me this morning. I’ve had it since early November. Definitely not keeping the replacement, and most definitely never buying another Corsair product again. Strictly MSI and beQuiet from this point on.

Frabk

Yes! Corsair finally upgraded the CX series, Finally now people have a nice reliable power supply they can abuse and use to overclock with. The older previous CX models were ok, But you don’t want to overclock with one of those, The newest CX v3 is awesome, I can overclock my gaming rig and see no voltage dip at all while running stress tests, I highly recommend the new CX series PSU’s, There is no need anymore to pay top dollar, This nice little unit will do the same job as the expensive ones. If you buy one, Just make sure it is the newest v3, It will be labeled Corsair CX series instead of CX Builder series. It is much improved! I use a CX600 in my i5 gaming rig, And I use another CX600 for my kids i5 gaming rig. mine is running 2xGTX-650Ti Boost GPUs, And my kid’s is running a GTX-670 GPU.

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