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Item#: N82E16817182072

Rosewill RX850-S-B - Xtreme Series 850-Watt Active PFC Power Supply - Continuous @ 104 Deg. F (40C), 80 PLUS Bronze, ATX 12V v2.2 & EPS 12V v2.91, SLI & CrossFire-Ready, Compatible with Core i7, i5

  • ATX 12V v2.2 & EPS 12V v2.91
  • 100 ~ 240VAC
  • 80 Plus Bronze Certified
  • Efficiency Up to 87%
  • 135mm Ball-Bearing Blue LED Fan
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In a computing world of new video and audio cards, add-ons, higher-powered chips and more, the search for power goes ever on. Rosewill's RX850-S-B satisfies your power-hungry virtual instincts, and keeps you running at your best. Clad in a sleek black shell, lit within with a cool blue light, the impression is one of cool, secret power, ready to do your bidding!

Four 12 volt rails deliver power to a myriad of connectors ready to attach to any and every accessory you’ve stuffed into your case! This compact powerhouse will run everything even up to 2 SLI-equipped GeForce 8800GTX cards! Active Power Factor Correction provides clean and reliable power to all those pieces, and temperature, current and voltage protection circuits make sure everything stays healthy.

Run with the big boys with Rosewill's RX850-S-B PSU, and know you've got ergs to spare!

  • newegg ATX12V v2.2 and EPS12V Compatible Compatible with the ATX12V v2.2 and EPS12V standards, the Rosewill RX850-S-B provides maximum power stability to drive the latest Intel and AMD processors as well as other components for desktop and entry-level sever computer systems.
  • newegg 850W Maximum Power A maximum power of 850W delivers safe, reliable output for ultra high-end computer systems.
  • newegg 80 PLUS Bronze Certified The 80 PLUS BRONZE certified power supply provides ultra-high power efficiency of at least 82% at any load between 20% and 100%, saving you money on your electricity bill and reducing heat in your computer's system, prolonging its life.
  • newegg Quiet Operation The silent 135mm 2-ball-bearing blue LED fan delivers high efficient cooling and ensures quiet operation through fan speed adjustments in response to loading conditions.
  • newegg Excellent Mesh Cable Sleeving The Rosewill RX850-S-B power supply’s cables are wrapped in black mesh sleeving so your chassis stays neat for optimized air flow and enhanced cooling.

Learn more about the Rosewill RX850-S-B

Quick Info

Warranty

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


Customer Reviews of the Rosewill RX850-S-B

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  • Nathen L.
  • 3/21/2015 8:07:11 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsNot very good at handling powerful GPUs

Pros: It can handle crossfired 7870s, overclocked FX 8350, SSDs, and a bunch of 120mm fans.

Cons: When I replaced my 7870s with a single GTX 980, does a hard shutdown of my PC when I run graphically intensive games.(I have to switch the psu on and off to be able to turn back on my pc) Because it thinks there is a power surge. Already tried reinstalling/cleaning drivers. Brought my FX 8350 back to default clocks, tested all the rams, and tried replugging in all the wires. NopeNopeNope. Wouldn't buy this again.

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  • Anonymous
  • 3/19/2015 9:01:41 PM
  • Tech Level: Average
  • Ownership: more than 1 year
  • Verified Owner

3 out of 5 eggsWorked great for a year

Pros: Worked wonderfully for the past year that I've had it.

Cons: Unfortunately, It's already starting to fail just a little over a year later.

Other Thoughts: This PCU worked great in the time that I've had it and under all the heavy use that it's been put through. But here it is about 14 months after the initial purchase and it's already showing signs of failing.

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  • DANIEL L.
  • 3/3/2015 6:04:55 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsIt Supplies Power

Pros: Once my replacement arrived and I got it installed, it worked perfectly. Haven't had any problems with it. I supplies power more than adequately for my needs, what more do you want? The fan in it works well and the light looks cool.

Cons: Dead on arrival. Caused me some grief getting my rig put together.

Other Thoughts: Newegg customer service was very quick about getting me a replacement, and once I had it my problems were over. Would buy again.

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  • Charles R.
  • 2/12/2015 4:41:34 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsThank you, I'll have another.

Pros: Been running for 5 years strong. Cable mesh is nice and pretty.

Cons: Only con is that it's not a modular, you can't take out the cables. But if you take your time they are long enough to tuck and hide.

Other Thoughts: Led light not as bright as it was 5 years ago. The first RX850 I got (DOA) blew (and took my motherboard with it), I RMA'ed it and got another RX850. It has been working flawlessly ever since. AMD 3.2 dual core with 4 gigs RAM and 1G video card.

I'm using the same RX850 in a quad core build to save money, hopefully after 5 years it can handle a few more good years.

On a side note it would be nice to have a free replacement RX850 to account for the price of the new motherboard the first RX blew 5 years ago. (Plus the shipping for the RMA and the price I paid to have the rest of my parts tested.)



My purchase history brings up so many memories...

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  • JAMES F.
  • 1/21/2015 5:05:01 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

3 out of 5 eggsGood while it was working

Pros: Ample power, plenty of connections, nice blue LED

Cons: first one failed after 11 months, RMA no hassle, second failed after 4 months, RMAing again,

Other Thoughts: loved the power supply while it worked.....

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  • Shane W.
  • 1/21/2015 12:20:46 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsPower Surges?

Pros: Good wattage for the price?

Cons: When faced with a powerful graphics card, this PSU routinely deems graphics draw as a power surge and forces the system to shut down to "prevent damage".

Other Thoughts: I've disabled the surge protection in the BIOS so I'm 100% sure this PSU is the source of the issue. I would strongly recommend NOT buying this PSU if you are using a GTX970 or higher. The PSU may meet the minimum wattage, but it falls FAR short of supporting the build.

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.

We are sorry to hear that, please contact our support team to assist you with troubleshoot and/or warranty options.

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

We look forward to hearing from you.

Thanks,
Rosewill Customer Care

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

  • William C.
  • 1/14/2015 5:54:53 PM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

1 out of 5 eggsNo good Power Supply

Pros: None. First unit failed a month after I had it.

Cons: This unit is flawed. Purchased the first one, did not power on at all. Returned. Received this one. Wanted to upgrade my 600W power supply to this 850 Watt. Powered on computer it ran for 2hrs before failing. This thing SUCKS!

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.

We are sorry to hear that, please contact our support team to assist you with troubleshoot and/or warranty options.

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

  • Patrick T.
  • 12/23/2014 6:25:55 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggs6.5 Years and still kicking

Pros: I have had no issues with this PSU. I bought it in July of 2008 and it has lasted through 2 machines. It handled everything that I have thrown at it. Had 3 8800GTS running SLI at one point, now running 2 GTX560s and bout to upgrade to a GTX 970.

Cons: NONE

Other Thoughts: I turn off my computer every night, maybe that's why it has lasted me that long? Give your computer time to rest!

Did you find this review helpful? Yes No

  • Marcin K.
  • 12/6/2014 5:07:03 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

1 out of 5 eggsfail to run any game

Pros: nice blue led light

Cons: newly built system (intel 5820k,gtx980, asus x99-a) shuts down when i start a game, any game. first i thought it was asus surge protector giving false positive but after turning that feature off same thing is happening. i should have chose other brand....

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.

We are sorry to hear that, please contact our support team to assist you with troubleshoot and/or warranty options.

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

  • Garrett H.
  • 11/14/2014 10:52:48 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggs

Pros: Very powerful for the price. Looks great. A ton of chords. Doesn't make alot of sound.

Cons: The plug in the back is extremely sensitive. If it is touched, the power supply will turn off.

Did you find this review helpful? Yes No

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Item#: N82E16817182072
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