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Item#: N82E16817182262

Rosewill CAPSTONE-550-M 550W Continuous @ 50°C, Intel Haswell Ready, 80 PLUS GOLD, ATX12V v2.31 & EPS12V v2.92, SLI/CrossFire Ready, Modular Active PFC Power Supply

  • ATX12V v2.31 / EPS12V v2.92
  • 100-240V
  • 80 PLUS Gold Certified
  • Modular Design
  • Efficiency up to 92%
  • 7 Years Warranty
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This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
BUY WITH CONFIDENCE
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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The Rosewill CAPSTONE series is a premium 80 PLUS GOLD certified power supply that delivers unprecedented performance, uncompromised features with unbeatable efficiency vital to today's high-end system. CAPSTONE's black coated casing with rock touch evokes a sense of high quality. It features active PFC with auto AC-input voltage adjustment (100 - 240V), mesh sleeves on all cables (including modular cables) for easier cable routing and better ventilation, and one 140mm fan with auto fan speed control for efficient, silent cooling. Modular cable design helps reduce bulk and clutter inside the chassis. An array of safety & EMI approvals including cTUVus, FCC, CE and  RoHS ensures outstanding reliability, durability and eco-friendliness.

  • newegg 450W Power Output with Single Strong 12V Rail The Rosewill CAPSTONE-450-M power supply delivers rated 450W @ 50°C of safe, reliable output for your computer systems. One single strong +12V rail with max 444W output and 2x 6+2-Pin PCIe connectors can juice up your high-end CPU and even multiple graphics cards.
  • newegg 80 PLUS GOLD Certified The 80 PLUS GOLD certified power supply provides ultra-high power efficiency of at least 87% at any load between 20% and 100%, saving your money on your electrical bill, reducing heat in your computer's system and prolonging its life.
  • newegg Modular Cable Design With necessary 20+4-pin and 1x 4+4-pin ATX12V/EPS12V connectors fixed, the modular cable design allows use of only the cables you need for reduced system clutter and improved air flow.
  • newegg Comprehensive Protection Over Temperature/Current/Voltage/Power Protection, Under Voltage Protection, and Short Circuit Protection provide maximum safety to your critical system components.
  • newegg NVIDIA SLI Ready & AMD CrossFireX Certified The Rosewill CAPSTONE-450-M is AMD CrossFireX and NVIDIA SLI Ready and comes with 2x 6+2 Pin PCI-E connectors enabling you to build a high performance multi-GPU gaming system.
  • newegg Silent Cooling One silent 140mm fan with auto fan speed control delivers excellent heat dissipation at low noise, keeping your PSU running at peak performance.

The Rosewill CAPSTONE series is a premium 80 PLUS GOLD certified power supply that delivers unprecedented performance, uncompromised features with unbeatable efficiency vital to today's high-end system. CAPSTONE's black coated casing and rock touch evokes a sense of high quality. It features active PFC with auto AC-input voltage adjustment (100 - 240V), mesh sleeves on all cables for easier cable routing and better ventilation, and one 140mm fan with auto fan speed control for efficient, silent cooling. Modular cable design helps reduce bulk and clutter inside the chassis. An array of safety & EMI approvals including cTUVus, FCC, CE and RoHS ensures outstanding reliability, durability and eco-friendliness.

  • newegg 550W Power Output with Single Strong 12V Rail The Rosewill CAPSTONE-550-M power supply delivers rated 550W @ 50°C of safe, reliable output for your computer systems. One single strong +12V rail with max 546W output and 2x 6+2-Pin PCIe connectors can juice up your high-end CPU and even multiple graphics cards.
  • newegg 80 PLUS GOLD Certified The 80 PLUS GOLD certified power supply provides ultra-high power efficiency of at least 87% at any load between 20% and 100%, saving your money on your electrical bill, reducing heat in your computer's system and prolonging its life.
  • newegg Modular Cable Design With necessary 20+4-pin and 1x 4+4-pin ATX12V/EPS12V connectors fixed, the modular cable design allows use of only the cables you need for reduced system clutter and improved air flow.
  • newegg Comprehensive Protection Over Temperature/Current/Voltage/Power Protection, Under Voltage Protection, and Short Circuit Protection provide maximum safety to your critical system components.
  • newegg NVIDIA SLI Ready & AMD CrossFireX Certified The Rosewill CAPSTONE-550-M is AMD CrossFireX and NVIDIA SLI Ready and comes with 2x 6+2 Pin PCI-E connectors enabling you to build a high performance multi-GPU gaming system.
  • newegg Silent Cooling One silent 140mm fan with auto fan speed control delivers excellent heat dissipation at low noise, keeping your PSU running at peak performance.

The Rosewill CAPSTONE series is a premium 80 PLUS GOLD certified power supply that delivers unprecedented performance, uncompromised features with unbeatable efficiency vital to today's high-end system. CAPSTONE's black coated casing with rock touch evokes a sense of high quality. It features active PFC with auto AC-input voltage adjustment (100 - 240V), mesh sleeves on all cables (including modular cables) for easier cable routing and better ventilation, and one 140mm fan with auto fan speed control for efficient, silent cooling. Modular cable design helps reduce bulk and clutter inside the chassis. An array of safety & EMI approvals including cTUVus, FCC, CE and RoHS ensures outstanding reliability, durability and eco-friendliness.


 

  • newegg 650W Power Output with Single Strong 12V Rail The Rosewill CAPSTONE-650-M power supply delivers rated 650W @ 50°C of safe, reliable output for your computer systems. One single strong +12V rail with max 648W output and 4x 6+2-Pin PCIe connectors can juice up your high-end CPU and even multiple graphics cards.
  • newegg 80 PLUS GOLD Certified The 80 PLUS GOLD certified power supply provides ultra-high power efficiency of at least 87% at any load between 20% and 100%, saving your money on your electrical bill, reducing heat in your computer's system and prolonging its life.
  • newegg Modular Cable Design With necessary 20+4-pin and 1x 4+4-pin ATX12V/EPS12V connectors fixed, the modular cable design allows use of only the cables you need for reduced system clutter and improved air flow.
  • newegg Comprehensive Protection Over Temperature/Current/Voltage/Power Protection, Under Voltage Protection, and Short Circuit Protection provide maximum safety to your critical system components.
  • newegg NVIDIA SLI Ready & AMD CrossFireX Certified The Rosewill CAPSTONE-650-M is AMD CrossFireX and NVIDIA SLI Ready and comes with 4x 6+2 Pin PCI-E connectors enabling you to build a high performance multi-GPU gaming system.
  • newegg Silent Cooling One silent 140mm fan with auto fan speed control delivers excellent heat dissipation at low noise, keeping your PSU running at peak performance.



The Rosewill CAPSTONE series is a premium 80 PLUS GOLD certified power supply that delivers unprecedented performance, uncompromised features with unbeatable efficiency vital to today's high-end system. CAPSTONE's black coated casing and rock touch evokes a sense of high quality. It features active PFC with auto AC-input voltage adjustment (100 - 240V), mesh sleeves on all cables for easier cable routing and better ventilation, and one 140mm fan with auto fan speed control for efficient, silent cooling. Modular cable design helps reduce bulk and clutter inside the chassis. An array of safety & EMI approvals including cTUVus, FCC, CE and RoHS ensures outstanding reliability, durability and eco-friendliness.

  • newegg 750W Power Output with Single Strong 12V Rail The Rosewill CAPSTONE-750-M power supply delivers rated 750W @ 50°C of safe, reliable output for your computer systems. One single strong +12V rail with max 744W output and 4x 6+2-Pin PCIe connectors can juice up your high-end CPU and even multiple graphics cards.
  • newegg 80 PLUS GOLD Certified The 80 PLUS GOLD certified power supply provides ultra-high power efficiency of at least 87% at any load between 20% and 100%, saving your money on your electrical bill, reducing heat in your computer's system and prolonging its life.
  • newegg Modular Cable Design With necessary 20+4-pin and 2x 4+4-pin ATX12V/EPS12V connectors fixed, the modular cable design allows use of only the cables you need for reduced system clutter and improved air flow.
  • newegg Comprehensive Protection Over Temperature/Current/Voltage/Power Protection, Under Voltage Protection, and Short Circuit Protection provide maximum safety to your critical system components.
  • newegg NVIDIA SLI Ready & AMD CrossFireX Certified The Rosewill CAPSTONE-750-M is AMD CrossFireX and NVIDIA SLI Ready and comes with 4x 6+2 Pin PCI-E connectors enabling you to build a high performance multi-GPU gaming system.
  • newegg Silent Cooling One silent 140mm fan with auto fan speed control delivers excellent heat dissipation at low noise, keeping your PSU running at peak performance.


Learn more about the Rosewill CAPSTONE-550-M

Model

Brand
Rosewill
Model
CAPSTONE-550-M
Series
CAPSTONE Series

Spec

Type
ATX12V v2.31 & EPS12V v2.92
Maximum Power
550W
Fans
1
PFC
Active
Main Connector
20+4Pin
+12V Rails
Single
PCI-Express Connector
2 x 6+2-Pin
SATA Power Connector
6
SLI
SLI Ready
Haswell Support
Certified
CrossFire
CrossFire Ready
Modular
Modular
Power Good Signal
100-500ms
Hold-up Time
> 16ms
Efficiency
> 87%, Up to 92%
Energy-Efficient
80 PLUS GOLD Certified
Over Voltage Protection
+3.3V, +5V, +12V
Input Voltage
100 - 240 V
Input Frequency Range
47 - 63 Hz
Input Current
10A
Output
+3.3V@22A,+5V@22A,+12V@45.5A,-12V@0.5A,+5VSB@3A
MTBF
>100,000 Hours
Approvals
cTUVus, FCC, CE, ROHS
Dimensions
5.91" x 3.39" x 6.69"

Features

Connectors
Fixed:
1x 20+4-Pin Main Connector
1x 4+4-Pin ATX12V/EPS12V Connector

Modular:
2x 6+2-Pin PCI-E Connector
5x 4-Pin Peripheral Connector
6x 5-Pin SATA Connector
1x 4-Pin Floppy Connector
Features
Intel Haswell CPU Ready

Continuous 550W@50 degree Celsius

Single strong 12V rail - idea for Gaming system

SLI & CrossFire Ready - 2x 6+2pin Connector

Modular design

1x Silent 140mm Fan with Auto Fan Speed Control for better silence

Active-PFC with auto AC-input voltage adjustment(100-240V)

Mesh sleeving on all cables for easier cable routing and better ventilation

Over Temperature/Current/Voltage/Power Protection, Under Voltage Protection, and Short Circuit Protection provide maximum safety to your critical system components

Safety & EMI Approval: cTUVus, FCC, CE, ROHS

Quick Info

Warranty

  • Limited Warranty period (parts): 7 years
  • Limited Warranty period (labor): 7 years


Customer Reviews of the Rosewill CAPSTONE-550-M

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Showing 49 of 49 reviews - Clear Filters

  • Michael S.
  • 5/12/2014 3:28:13 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsSilent with more power than I will need for a while

This review is from: Rosewill CAPSTONE-550-M 550W Continuous @ 50°C, Intel Haswell Ready, 80 PLUS GOLD, ATX12V v2.31 & EPS12V v2.92, SLI/CrossFire Ready, Modular Active PFC Power Supply

Pros: Having owned a few other Rosewill products, I know that they are well built and thend to last, so I had no problem choosing Rosewill for my new power supply. No flashy LED fans here. It just quietly feeds juice to my components. It's fan is probably the most quiet fan in my case. Love that it is modular so I only have to attach the cables that I need to cut down on clutter.

Cons: None

Other Thoughts: Quiet with plenty of power. No drawbacks or negatives.

Did you find this review helpful? Yes No

  • Adam T.
  • 5/8/2014 4:11:32 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggs

This review is from: Rosewill CAPSTONE-550-M 550W Continuous @ 50°C, Intel Haswell Ready, 80 PLUS GOLD, ATX12V v2.31 & EPS12V v2.92, SLI/CrossFire Ready, Modular Active PFC Power Supply

Pros: 1: Quiet
2: Easy install into case
3: Modular
4: Came with carrying case to store extra power connections
5: Shielded cables

Cons: None so far

Other Thoughts: Glad I spent the extra money to go modular

Did you find this review helpful? Yes No

  • Amber W.
  • 4/20/2014 11:39:46 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsI'm happy

This review is from: Rosewill CAPSTONE-550-M 550W Continuous @ 50°C, Intel Haswell Ready, 80 PLUS GOLD, ATX12V v2.31 & EPS12V v2.92, SLI/CrossFire Ready, Modular Active PFC Power Supply

Pros: Works, gold rated, got it on sale, fan works well

Cons: Only time will tell

Other Thoughts: I haven't owned this power source long enough to say anything about its durability. It is however very stable for my system. I don't know how it would do with overclocking.

Did you find this review helpful? Yes No

  • Clifford B.
  • 3/29/2014 8:16:23 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsRosewill 550 w PS

This review is from: Rosewill CAPSTONE-550-M 550W Continuous @ 50°C, Intel Haswell Ready, 80 PLUS GOLD, ATX12V v2.31 & EPS12V v2.92, SLI/CrossFire Ready, Modular Active PFC Power Supply

Pros: Pretty cables.

Cons: Power Supply is keyed for PCI-E power connectors but they are not PCI-E Keyed connectors. One of the pins is 5v vice 12 volts and the swap is made in the cabling, so if you connect a standard PCI-e cable to the PS, one pin will be undervoltage. Also, since the cable connectors are keyed to the PCI-E standard (which has no 5v), and you connect the Rosewill PS cable to a standard PCI-e slot, 12 volts will be provided to the SATA connector 5 volt pin.

Other Thoughts: Using non IEEE standard cable Keys on the PS can cause hardware failures....that's why there are IEEE standards for PCI-e and cable KEYS.

Manufacturer Response:

Dear Valued Customer,
Thank you very much for purchasing this unit.
We strive to provide the most reliable and highest quality products to our customers.

Thanks for the feedback we will pass it along to our QA and Design teams.

Phone: 1- 800-575-9885
Email: rma@rosewill.com
Email2: techsupport@rosewill.com

We look forward to hearing from you.

Thanks,
Rosewill Customer Care

Did you find this review helpful? Yes No

  • DANIEL R.
  • 3/25/2014 6:10:15 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsVery Happy!

This review is from: Rosewill CAPSTONE-550-M 550W Continuous @ 50°C, Intel Haswell Ready, 80 PLUS GOLD, ATX12V v2.31 & EPS12V v2.92, SLI/CrossFire Ready, Modular Active PFC Power Supply

Pros: First time builder.
1.) Very well packaged
2.) High attention to detail in all components
3.) Great fit in Fractal Design R4 case
4.) Quiet as it gets (I'm also not running it hard)
5.) Cables were well made, zip ties a plus
6.) Modular cable inputs until the cows come home

Cons: An indicator LED would have been a useful addition.

Other Thoughts: Let's see how she holds up. Happy so far.

Did you find this review helpful? Yes No

  • EDWARD G.
  • 3/25/2014 9:03:02 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsVery Quiet and Cool!

This review is from: Rosewill CAPSTONE-550-M 550W Continuous @ 50°C, Intel Haswell Ready, 80 PLUS GOLD, ATX12V v2.31 & EPS12V v2.92, SLI/CrossFire Ready, Modular Active PFC Power Supply

Pros: I have two of these. Both are very quiet and cool. Much more so than I originally thought. I have them in 2U rack mount cases with fan intake coming from the lid and not the interior. They add no heat to the case interior. Because the run cool, I expect low expenditure of energy with their use. I find that quiet to me means almost no audible level. QUIET!

Cons: None.

Other Thoughts: You should be happy with the efficiency of these PSU's.

Did you find this review helpful? Yes No

  • Eben L.
  • 2/1/2014 6:50:02 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsWorking great

This review is from: Rosewill CAPSTONE-550-M 550W Continuous @ 50°C, Intel Haswell Ready, 80 PLUS GOLD, ATX12V v2.31 & EPS12V v2.92, SLI/CrossFire Ready, Modular Active PFC Power Supply

Pros: Item arrived on time and was well packaged. I purchased this item for 63.00 before 15.00 MIR. All cables are conveniently marked and sleeved with durable material. As a whole, this item was a joy to work with while building.

Cons: None as of yet, will update if rebate doesn't arrive.

Other Thoughts: Would recommend.

Did you find this review helpful? Yes No

  • Jason H.
  • 1/29/2014 4:58:13 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGreat, somewhat homely PSU

This review is from: Rosewill CAPSTONE-550-M 550W Continuous @ 50°C, Intel Haswell Ready, 80 PLUS GOLD, ATX12V v2.31 & EPS12V v2.92, SLI/CrossFire Ready, Modular Active PFC Power Supply

Pros: High quality internals
Excellent Warranty
Quiet Operation
Modular
High Efficiency

Cons: A bit expensive at MSRP
Plain design

Other Thoughts: I purchased the Capstone 550W to replace my XFX 650W that had it's fan die. The Rosewill was on sale for $49/AR so the price was right and the high efficiency is desirable because I run it in my gaming HTPC 24/7.

First of all, this PSU is pretty basic in presentation. For me this is not a big deal, others potentially more so. The modular cables have decent length, easily reaching all my components in my Silverstone GD04B HTPC case. It is powering a lightly overclocked i5-2500k , Sapphire HD 7950 (1100/1700) , 240GB SSD, 5 case fans, CPU cooler and a 2TB Seagate HDD.

Having tested various stress tests, including media encoding and gaming, the Capstone has had no issues and the fan is quiet. Downright silent compared to my case fans which have a light audible hum.

Without testing how much power I am pulling from the wall, I do not have time to validate it's efficiency, but according to various professional reviews it easily hits Gold standards and uses quality Superflower internals. Realistically I am only pulling 350W max at any given time, so the PSU is not getting taxed that hard.

Overall I am happy with the performance thus far and am pleased that the PSU has a lengthy 7 year warranty.

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

  • john w.
  • 1/23/2014 5:59:34 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsnice

This review is from: Rosewill CAPSTONE-550-M 550W Continuous @ 50°C, Intel Haswell Ready, 80 PLUS GOLD, ATX12V v2.31 & EPS12V v2.92, SLI/CrossFire Ready, Modular Active PFC Power Supply

Pros: hardly any heat coming out the back...very quiet. sold feel and nice finish.

Cons: not one

Did you find this review helpful? Yes No

  • Mao S.
  • 12/1/2013 11:55:35 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsSolid

This review is from: Rosewill CAPSTONE-550-M 550W Continuous @ 50°C, Intel Haswell Ready, 80 PLUS GOLD, ATX12V v2.31 & EPS12V v2.92, SLI/CrossFire Ready, Modular Active PFC Power Supply

Pros: Cheap. Does what it says it will do. Also very very quiet.

Cons: The casing for the cords is pretty cheap, but this is also a cheap PSU. If you are looking for the sleeves to completely cover the classic yellow/red innards, stick with ANTEC or another high end brand.

Other Thoughts: Pretty good packaging for a dirt cheap PSU.

Did you find this review helpful? Yes No

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