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Item#: N82E16817139059

CORSAIR CSM Series CS550M 550W ATX12V v2.4 and EPS 2.92 80 PLUS GOLD Certified Modular Active PFC Power Supply

  • ATX12V v2.4 and EPS 2.92
  • Modular
  • 80 PLUS GOLD Certified
  • 47 - 63 Hz
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Learn more about the Corsair CS550M

Model

Brand
CORSAIR
Model
CS550M
Series
CSM Series

Spec

Type
ATX12V v2.4 and EPS 2.92
Maximum Power
550W
Fans
1
PFC
Active
Main Connector
20+4Pin
PCI-Express Connector
2 x 6+2-Pin
SATA Power Connector
5
Haswell Support
Yes
Modular
Modular
Efficiency
> 90%
Energy-Efficient
80 PLUS GOLD Certified
Input Frequency Range
47 - 63 Hz
Dimensions
5.9" x 3.39" x 5.51"

Features

Features
The latest ATX12V v2.4 and EPS 2.92 standards and it is backward compatible with ATX12V 2.2, 2.31 and ATX12V 2.01 systems.

4th generation IntelCoreprocessor Ready (Intel Haswell and Z87 motherboards)

80PLUS Gold certified, delivering over 92% energy efficiency at real world load conditions.

Modular cables allow you to remove unneeded cables.

The low-profile, flat modular cable design reduces air friction and helps maximize airflow through your computer's chassis.

A three year warranty and lifetime access to Corsair's legendary technical support and customer service.

Active Power Factor Correction (PFC) with PF value of 0.99.

Universal AC input from 100~240V.

Multi-GPU Ready

Over-voltage protection, under-voltage protection, and short circuit protection, over power protection, over temperature protection provide maximum safety to your critical system components.

Safety and Agency Approvals: FCC, ICES, UL, CUL, TUV, CCC, CE, RCM, CB, EAC, KC, BSMI, ROHS, WEEE

Quick Info

Warranty

  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years


Customer Reviews of the Corsair CS550M

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Showing 13 of 13 reviews - Clear Filters

  • Steven P.
  • 9/28/2014 3:33:21 AM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsLove it

This review is from: CORSAIR CSM Series CS550M 550W ATX12V v2.4 and EPS 2.92 80 PLUS GOLD Certified Modular Active PFC Power Supply

Pros: Quiet and modular -- I.E. I only use the cords I need. First modular power supply I have owned and it was worth it just for this alone. A godsend for cable management. Quality through out. 80 Plus Gold -- lower power bills, smart power management -- love to be green.

Cons: A previous poster mentioned some mislabeling on his/her modular connection. I took note of that while installing mine and noticed what he/she was talking about. It actually lists two options, including CPU power. I took it as a, "as needed" connection and currently have an data hard drive power cable connected to it (one of the other options listed).

Other Thoughts: Has two 6+2 PCI-e connectors so it can handle to most thirsty of video cards, but just one - not SLI that I am aware of. Not that I would want to even try. I beleive 550 watts may be two low for two state of the art PCI-e gaming cards. Since this was a custom-mac build SLI was out of the picture anyway, but future upgrades to a powerful OS X supported card is in my future. ;)

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  • Calvin C.
  • 9/15/2014 8:54:21 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsNice power supply.

This review is from: CORSAIR CSM Series CS550M 550W ATX12V v2.4 and EPS 2.92 80 PLUS GOLD Certified Modular Active PFC Power Supply

Pros: This supply was a decent purchase for what I needed to do. The cables were adequate length and not to stiff to work with and bend. It's powering a overclocked 4690k and it never gets hot and I never hear the fan. For the money I can not complain. I would recommend this to anyone looking for a supply in that power and price bracket.

Cons: Only a 3 year warranty. In that price bracket other manufacturers are offering better. Keep this in mind.

Did you find this review helpful? Yes No

  • Ireland E.
  • 9/3/2014 9:29:43 PM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsGood PSU, with caveats

This review is from: CORSAIR CSM Series CS550M 550W ATX12V v2.4 and EPS 2.92 80 PLUS GOLD Certified Modular Active PFC Power Supply

Pros: In general you won't go wrong with Corsair PSUs so long as you do your homework. I've fried or overtaxed several power supplies in my time but Corsair PSUs have never let me down, and this keeps me coming back. The advertised feature set is exactly what I needed for my current project, a mini-ITX small form-factor htpc box with gaming cred. This PSU is solid and quiet, but there are some very minor quibbles.

Cons: The modular cable options are a bit limited. I needed to use two separate SATA power cables to accommodate three drives in my mini-ITX case, which would not have been a factor if the connectors had an additional inch of separation between them. It also would have been nice to have a molex adapter present so that the dedicated molex lead could have been omitted, but this is a very case-sensitive circumstance. Bad pun, sorry. No serious knocks here, but do be sure to check the diagram in the product photos to ensure that the cable and connector options are going to play nice in your system - mine required all of the modular connections to be used, where in a perfect world I could have deleted two cables.

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  • Zayna U.
  • 8/22/2014 4:27:57 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsI'll never buy a PSU from anyone else.

This review is from: CORSAIR CSM Series CS550M 550W ATX12V v2.4 and EPS 2.92 80 PLUS GOLD Certified Modular Active PFC Power Supply

Pros: - The wires are very sturdy, yet easy enough to bend, hide, and work with without feeling like you're going to break them.

- Modular! First time I've gone with a modular PSU, I'm very happy I did. Sped up the build quite a lot and made cable management a breeze.

- Perfect condition, worked the first time I booted, and hasn't showed any problems yet. Just the right amount of headroom for a $550 AMD build.

- Corsair quality :3

Cons: - I'm hesitant to list this as a con, but on the end of the PCI-E cable that plugs into the PSU, it said "CPU" on it, which is not accurate. The CPU Power (8 PIN) & Mobo Power (24 PIN) are not modular, and are separate from the other cables. I feel like this might confuse someone who hasn't build a computer before. It did make me a bit paranoid, but didn't cause any issues, so I'm not docking an Egg for it.

Other Thoughts: Considering what a bad PSU can do to a system, I'm hesitant to buy anything but Corsair. My 750W PSU in my own gaming rig has been rock solid for about 5-6 years now. Yay Corsair!

1 out of 1 people found this review helpful. Did you? Yes No

  • Joseph F.
  • 7/12/2014 11:45:43 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsGood not great

This review is from: CORSAIR CSM Series CS550M 550W ATX12V v2.4 and EPS 2.92 80 PLUS GOLD Certified Modular Active PFC Power Supply

Pros: 80 Plus Gold rating, low wattage, sturdy.

Cons: The cables are a bit stiff, not too long, and lastly there are only two SATA power connectors on each line.

Other Thoughts: If you work the cables a bit, they loosen up substantially. Also, I wouldn't expect a 550W PSU to have ridiculously long cables, but I went ahead and put it as a con simply because the 20+4 connector is ridiculously long. The cables simply aren't proportional to each other.

1 out of 1 people found this review helpful. Did you? Yes No

4 out of 5 eggsQuiet and competent

This review is from: CORSAIR CSM Series CS550M 550W ATX12V v2.4 and EPS 2.92 80 PLUS GOLD Certified Modular Active PFC Power Supply

Pros: 1. Quiet operation
2. Gold plus certified
3. Semi modular -24 (20+2) pin motherboard and 8 (4+4) pin cpu connectors are hardwired
4. 2 pci-e 6+2 connectors
5. Not very long – will work with some ITX cases
6. Handles stress well
7. Haswell suspend states supported
8. Comes with wire ties (nice touch)
I prefer semi modular supplies. If you are using a ATX or mATX motherboards, then the two cables that you have to have are hardwired. The last modular power supply that I used was full modular. The 24 pin cable was very hard to get seated in the power supply. This is a great plus.

You can run one GPU with a Haswell cpu over clocked. My test best – Core i7 4770K, Z87 motherboard, GTX 770 GPU. The overclock is 4.5 Ghz. See my testing below. Not a hitch with these specs.

The packaging was well done, and the extras are really helpful for cable management.

Cons: 1. Not a lot of sata options 5 connectors on two runs
2. Cables are short
3. Cables can be stiff, especially in tight places.

If you are building in a large case it is a problem because of the cables. Especially, if you have a low hard drives, bottom mount power supply and very high mounted optical drive, you may not have a long enough cable. There is a molex cable, which can be coopted for sata duty if needed.

The cables are fairly stiff. It is something that you find with higher wattage power supplies. While this allows low voltage drops, it may cause issues in smaller cases and tight spaces.

Other Thoughts: I ran this power supply in my test bed for about a month. I wanted to make sure it was doing what it needed to do. I ran Prime 95, Memtest 86+ and Furmark to make sue the power supply could withstand my set-up. It did. Prime 95 ran 24 hours without a hitch. After 45 minutes there was not a hitch in Furmark. Memtest 86+ ran without a hitch as well.

If you are running a Socket 2011, two or more graphics card, this is the not the power supply for you. A full size ATX case may be problematic. So who needs to apply, I can think of several settings where this power supply will work well.
1. A Midsize ATX case with 1 graphic card
2. A mATX case
3. A HTPC set-up
4. A ITX case that can accommodate a power supply that is 150mm long (some can take only 140mm).
The only qualifier for the any is that the AMD 93780 draws a lot of voltage, and may not be a good partner with this power supply.
Overall, I like this power supply. It is quiet and well built. The pros outweigh the cons for the most part. I can see many reasonable applications for this drive. Most computers will be able to use this power supply for their bills.

3 out of 3 people found this review helpful. Did you? Yes No

  • Richard V.
  • 2/11/2014 9:35:46 PM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day
  • Verified Owner

4 out of 5 eggsAddendum

This review is from: CORSAIR CSM Series CS550M 550W ATX12V v2.4 and EPS 2.92 80 PLUS GOLD Certified Modular Active PFC Power Supply

Pros: Quiet & stable.

Cons: Modular SATA cables configuration.

Other Thoughts: Addendum: the upside-down SATA cable problem would not be a factor where the PSU is located at the bottom of a newer design mid-tower case. So: I'm not recommending this PSU for older design computer cases with top mounted PSU's. Or at least: Corsair should offer better options for those interested in using this PSU in an older top-mounted PSU case.

3 out of 3 people found this review helpful. Did you? Yes No

4 out of 5 eggsCorsair CS550M review

This review is from: CORSAIR CSM Series CS550M 550W ATX12V v2.4 and EPS 2.92 80 PLUS GOLD Certified Modular Active PFC Power Supply

Pros: Extremely quiet; semi-modular design; detachable cables are fully sleeved in black, though slightly stiff; perfect combination of size and power for a Bitfenix Prodigy gaming rig build (see Other thoughts below); nice-looking; quality construction; Gold-certified; Haswell compatible; easy to install.

Cons: Not really cons, but the specs are naturally lower than Corsair's more expensive models:
Not Corsair-link compatible, so you cannot monitor output current or fan speed; power cable is not fully-sleeved, so the multi-colored wires are visible at the motherboard end; fan is not hybrid, i.e. it never stops completely (although I cannot hear it over the system fans at all).

Other Thoughts: I have an inexpensive power supply testing unit I use to check all my PSUs before installation, and this one checked out fine. I can't do the in-depth analysis of expert reviewers, but for what it's worth, the CS550M was well reviewed by JohnnyGuru (with caveat to check prices).
I built two rigs using the Bitfenix Prodigy case. The first used a Corsair RM650, which at 160mm in length just fits inside, as it is right at the maximum specified length. I had to use some force, and the modular cables were quite kinked at the connectors when I finished. On the other hand the CS550M, at 150mm length, gives you 10mm more room, and it was pretty easy to install in comparison, plus there's plenty of room at the side for cable management. If it were shorter, it would be even easier to install, but the unit would be less capable of cool power delivery.
With 550 watts it can easily power a gaming rig with a good single graphics card, or two mid-range cards (specs state that is is multi-GPU compatible but you obviously wouldn't use it with two AMD 290X's).
If the relatively small size is important to you, I would definitely recommend it, and even if not (and depending on the price of competing products in Corsairs and other vendor's lines), it can still be a worthwhile purchase

(Note: This product was furnished to me by Newegg for the purposes of this review)

2 out of 2 people found this review helpful. Did you? Yes No

  • Richard V.
  • 2/11/2014 3:03:12 PM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day
  • Verified Owner

4 out of 5 eggsNice, but could be better

This review is from: CORSAIR CSM Series CS550M 550W ATX12V v2.4 and EPS 2.92 80 PLUS GOLD Certified Modular Active PFC Power Supply

Pros: Quiet fan, stable voltages.

Cons: SATA power connectors (on the modular cable) are upside-down. The SATA connector closest to the PSU should be oriented so that it can be plugged into the drive that's also closest to the PSU. Instead, you must connect the SATA connector closest to the PSU to the drive furthest from the PSU, then to other drives (going vertically upwards in a tower case). How did this error pass factory inspection?

Other Thoughts: The cable with only 2 SATA power plugs would ideally have an inch or two increased spacing between the 2 plugs. This would allow putting an optical dive at the top of a mid-tower case. As is, the optical drive must be re-located to the lowest case opening, in order for the modular SATA power cable to reach both it and an SSD below it.

Did you find this review helpful? Yes No

5 out of 5 eggsLived up to the Corsair name

This review is from: CORSAIR CSM Series CS550M 550W ATX12V v2.4 and EPS 2.92 80 PLUS GOLD Certified Modular Active PFC Power Supply

Pros: Corsair name, VERY VERY quiet, modular, neatly packaged.

Cons: The CS550M comes with only two SATA connectors on one string, REALLY?!?!?! Couldn't have added the third one? All cables are very stiff around the connectors, will need to work them a little to loosen them up.

Other Thoughts: Unit comes neatly packaged in a well labeled box. You receive the unit in bubble wrap, the ATX 24-pin and the EPS/ATX12V 8-pin cables are non-modular, so they are attached. The modular cables come wrapped in plastic along with screws, zip ties, power cable and an instruction booklet.

The modular cables you receive are the following:
1 - 2 PCI-E 6+2-pin cable
1 – 3 SATA cable
1 – 2 SATA cable (again, why short the extra SATA connector on this cable????)
1 – 4 molex cable
1 – molex to floppy converter

All cables are very very stiff and unsleeved, except the 24-pin ATX cable.

The unit is very very quiet, the sound of the case fans drown out the PSU fan.

I installed this unit into the following system:
CASE: COOLER MASTER Elite 430
Card Reader: Rosewill RCR-AK-IM5002 (disabled due to lack of 6th SATA power connector)
CPU HSF: COOLER MASTER HYPER 212 plus
MOBO: GIGABYTE GA-880GA-UD3H AM3 ATX
CPU: AMD AM3 Phenom II X3 740
GPU: PNY XLR8 GTX 460 OC 1GB 256-bit GDDR5 (overclocked to 800Mhz Core/1600mhz Shader/1900Mhz Memory)
SOUND: Realtek ALC892
DEDICATED PHYSX: Galaxy GT240 512MB GDDR5 (overclocked to 600Mhz Core/1400mhz Shader/1900Mhz Memory)
RAM: Mushkin Enhanced Silverline 8GB (2 x 4GB) DDR3 1333
SSD(OS): SAMSUNG 840 Pro Series 256GB
SSD(Swapfile): OCZ Agility 2 120GB
HHD(STORAGE): SAMSUNG Spinpoint F3 1TB
BURNER: LITE-ON iHBS212 Blu-Ray Burner
PLAYER: LITE-ON iHOS104-08 OS: Windows 7 Ultimate 64-bit

I pulled out a digital multimeter and tested the PSU to the best of my abilities. Below are the average (3 readings) voltages on the +3.3, +5 and +12 volt rails.

Boot:
+3.3v = 3.32
+5v = 5.08
+12v = 12.08

Idle:
+3.3v = 3.32
+5v = 5.08
+12v = 12.08

Kombustor (DX 11, multi gpu):
+3.3v = 3.32
+5v = 5.08
+12v = 12.07

Prime95:
+3.3v = 3.32
+5v = 5.08
+12v = 12.08

As you can see the voltage on the 3 rails hardly moved. The Corsair CS550M was VERY stable and lived up to the Corsair name. I would recommend this PSU to anyone that only needed 5 SATA power connectors.

2 out of 2 people found this review helpful. Did you? Yes No

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