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Rosewill CAPSTONE 550M 550W Semi-Modular Power Supply (80 PLUS GOLD Certified)

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Marketplace Seller
  • 550W Power Supply
  • 80 PLUS GOLD Certified PSU
  • ATX 12V v2.31 / EPS 12V v2.92
  • Continuous 550W @ 50 Degree Celsius
  • Modular Cable Design
  • SLI & CrossFire Ready - 2 x 6+2 Pin Connector
  • Silent 135mm Fan with Auto Fan Speed Control
  • Single Strong 12V Rail - Ideal for Gaming Systems

  • Overview
  • Specs
  • Warranty & Returns
  • Reviews
 Capstone 550 Watt power supply
 Capstone 550 Watt power supply
80 PLUS Gold Certified

The Capstone 550 Watt power supply is 80 PLUS Gold certified and delivers up to 90% efficient performance under typical loads. This high form of efficiency saves energy, reduces heat in your system, decreases fan noise and prolongs the PSU’s life span so you can maximize your gaming activity.

 Capstone 550 Watt power supply
Warranty

Capstone PSUs are backed by 5 years of warranty. Your power supply unit will operate according to its technical specifications within intended operating environments for the length of the warranty period.

 Capstone 550 Watt power supply
Certifications

Capstone PSUs have successfully passed safety and compliance tests from CE, FCC, TUV, and cTUVus.

 Capstone 550 Watt power supply
Silent & Intelligent

With Auto Fan Speed Control, the power supply’s 135mm fan turns slowly at low temperatures, reducing power consumption and fan noise to near silence. When temperatures increase, fan speed will also increase. This decreases the odds of over-heating, extends the fan’s life span and reduces energy consumption.


Semi-Modular

A semi-modular PSU design comes with only the essential cables pre-attached. This allows for some customization of additional cables, plus reduced clutter and better airflow compared to non-modular PSUs within your computer case or system.

 Capstone 550 Watt power supply
Specifications
 Capstone 550 Watt power supply
Rosewill Capstone Series
STYLE CONNECTOR TYPE CAPSTONE 550M CAPSTONE 650M CAPSTONE 750M CAPSTONE 850M
20+4 Pin x1, 23.64 in x1, 23.64 in x1, 23.64 in x1, 23.64 in
8 & 4+4 Pin - EPS - - x1, 25.61, 35.4 in x1, 25.61, 35.4 in
4+4 Pin - EPS x1, 25.61 in x1, 25.61 in x1, 25.61 in -
Split PCI-E x1, 23.6, 29.5 in x2, 23.6, 29.5 in x2, 23.6, 29.5 in x2, 23.6, 29.5 in
SATA + 1 Molex x2, 19.7(s), 25.6(s), 31.5(s), 37.4(m) in x2, 19.7(s), 25.6(s), 31.5(s), 37.4(m) in
x1, 19.7(s), 25.6(s), 31.5(m) in
x2, 19.7(s), 25.6(s), 31.5(s), 37.4(m) in
x1, 19.7(s), 25.6(s), 31.5(m) in
x3, 19.7(s), 25.6(s), 31.5(s), 37.4(m) in
Molex + 4 Pin Floppy x1, 19.7(m), 25.6(m), 31.5(m), 37.4(f) in x1, 19.7(m), 25.6(m), 31.5(f) in x1, 19.7(m), 25.6(m), 31.5(f) in -
SATA + Molex + Floppy - - - x1, 19.7(s), 25.6(m), 31.5(m), 37.4(f) in

*LEGEND: (in) - inches, (m) - Molex Connector, (s) - SATA Connector, (f) - Floppy Connector


Learn more about the Rosewill CAPSTONE 550M

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 5 years
  • Limited Warranty period (labor): 1 year
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by Newegg.com's Standard Return Policy.
Ownership: 1 month to 1 year
Verified Owner
5/ 5
Solid power supply 10/2/2019 9:02:02 PM

Pros: like everything about it

Cons: none

Overall Review: A+

1 out of 1 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
4/ 5
power supply 8/23/2019 1:38:33 PM

Pros: i got it this time and dint take long. thats

Cons: i got the power suply

2 out of 5 people found this review helpful. Did you?
Ownership: more than 1 year
Verified Owner
2/ 5
Worked good until pins burned. Never got mail-in rebate. 2/22/2019 7:18:01 AM

Pros: Would have been a good deal if I ever got the rebate. Efficient.
Seemed like a good choice for a smaller build

Cons: Expensive without rebate. Not a lot of connectors. Ran for about 4 months before frying the modular plug pins for the PCIE cords.
Was powering a Sapphire Radeon HD6970. Was informed that the warranty did not cover burn damage like this.

Overall Review: Why have a modular design if the connectors cannot carry at least the same if not more current than the rest of the wire?
Why not cover damage from inadequate connector. Computer was connected to a watt meter and never went above 400 watts.
I was still able to use it for a media system using a molex to PCIE adapter to power a GTX 1060 6GB.

2 out of 2 people found this review helpful. Did you?
Manufacturer Response:
Dear Michael,

I apologize for the connectors and rebate issue. Please rest assured that we can help you with both of the issue. Please contact us with an electronic copy of order invoice and we can further assist you as the product is covered by its 5-year manufacturer warranty. We do care about your feedback and will continue improving our products in future.

Phone: 1- 800-575-9885
Email: rma@rosewill.com
Email2: techsupport@rosewill.com
Thanks,
Rosewill Customer Care
Ownership: 1 month to 1 year
Verified Owner
5/ 5
Great PSU for the money 1/20/2019 8:46:33 AM

Pros: - Great value
- Inexpensive
- No problems
- Silent
- Modular
- Great quality for price
- Gold certified

Cons: - No cons

Overall Review: I used this PSU to power an MSI Gaming Carbon Pro AC, 4 system fans, Ryzen 1600, and three different GPUs over time. It once powered an Nvidia GTX 680, once powered an MSI Armor RX 580, and now powers a Sapphire Pulse Vega 56 with no power issues.

Only problem is that I experienced some coil whine from my system while running a benchmark (Performance Test Mandlebrot) that pushed the FPS over 400 that squeaked like a small animal. I'm no expert, but as I understand, coil whine is a combination of GPU and PSU and the quality of the VRM components, but mostly due to GPU components. I'm pretty sure coil whine is from my Vega 56. There's no coil whine from my system during gaming.

Other then that no problems and I recommend this as a quality PSU. I will continue to Trust in Rosewill Capstone products.

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Anonymous
Ownership: 1 month to 1 year
Verified Owner
2/ 5
Uh No! 1/14/2019 3:34:06 PM

Pros: It work. Modular.

Cons: Not a gaming PSU. It's definitely not 80+ gold certified. Caused AMD FX-8350 to run slow as hell. Put the Antec back in and wow!

Overall Review: No, would not buy again.

0 out of 4 people found this review helpful. Did you?
Manufacturer Response:
Dear Customer,

I am so sorry for the inconvenience. The CAPSTONE-550-M is a 80 PLUS GOLD Certified PSU. Based on your description, we are unable to determine the issue. Please contact us and the contact information is below for further assistance. Please rest assured that the CAPSTONE-550-M is covered by its 5-year manufacturer warranty. We would be happy to assist you with any issue. We look forward to your reply.

Phone: 1- 800-575-9885
Email: rma@rosewill.com
Email2: techsupport@rosewill.com
Thanks,
Rosewill Customer Care
Ownership: 1 month to 1 year
Verified Owner
2/ 5
Loud Fan (Updated: 12/31/2018) 12/31/2018 4:44:46 PM

Pros: - It powers my machine
- Cables were easy to install

Cons: - HUGE Con - The fan is LOUD, so very loud. It reminds me of the times I worked in a datacenter...its THAT loud

Overall Review: I had to give this only 2 eggs because the fan is so very loud. Honestly, I don't see why Rosewill would make such a loud fan.

UPDATE: 12/23/2018
Rosewell was easy to deal with, but the time that machine has been down is not worth the $20 I saved by ordering from NewEgg on Cyber Monday.
- Ordered this on 11/26/2018
- Received it on 12/14/2018 (18 days after my order)
- Requested RMA on 12/15/2018 once I realized how loud the fan was
- Received RMA and return shipping label on 12/18/2018
- Shipped the item back on 12/18/2018
- My item isn't supposed to arrive at NewEgg until 12/26/2018
- At that point, NewEgg will ship me a replacement

So, if it's going to take 3 weeks to get my new part, my machine will have been down for almost 2 months.

UPDATE: 12/31/2018
Newegg did not have any of these in stock once my return arrived. They issued me a full refund.

1 out of 1 people found this review helpful. Did you?
Manufacturer Response:
Dear Charles,

We are really sorry for the kound fan; Thank you so much for your feedback. We do care about your thoughts and will continue improving our PSU products in future.

Phone: 1- 800-575-9885
Email: rma@rosewill.com
Email2: techsupport@rosewill.com
Thanks,
Rosewill Customer Care
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Works 12/28/2018 10:18:43 AM

Pros: -Works, feels great in the hand especially if u havent held a modern PSU in your hand before.
-Smells Nice
-Robust Rosewill Craftsmanship
-Gets ladies for u at the bar

Cons: ...none so far

1 out of 3 people found this review helpful. Did you?
Anonymous
Ownership: 1 week to 1 month
Verified Owner
3/ 5
Loud Fan 12/17/2018 12:12:43 PM

Pros: Does the trick considering the price

Cons: loud fan, sounds a bit like a fridge

Overall Review: will return because of noise

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