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The Real Power Pro RS-850-EMBA from Cooler Master is engineered to meet the power demands of the gamer into serious overclocking. It features the world’s first six +12V rails for enhanced reliable power distribution in Quad-SLI as well as 2 way server systems. Additionally, it allows stable and consistent performance with the multiple protection design that makes it virtually immune to over voltage, over current, and potential short-circuits.
The RS-850-EMBA provides maximum 850W of continuous power for the most demanding computer systems. It boasts an Eco friendly design that saves energy and money by providing more efficient power up to 85%. It is compatible with the latest Intel standard - ATX 12V V2.2 as well as SSI standard - EPS 12V V2.91. The reliability can be demonstrated with a MTBF of more than 100,000 hours
The cooling is taken care by an intelligent 135mm fan speed control that effectively dissipates heat silently (less than 16dBA). This is a powerful unit just ready to push the volts through anything you can put in your box!
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- 5
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- 58%
- 4
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- 14%
- 3
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- 4%
- 2
-
- 12%
- 1
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- 12%
| Product Rating: |
 
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| Total Reviews: |
76 |
got 2, neither worked
- Pros: i guess the only pro i can say is that it has TONS of connections of things and nice long wires.
- Cons: had the same cold boot problem as others. except without the ability to boot at all. had gotten one and RMA'd it, now its time for a refund.
on the coolermaster forums, one of the employees said they found a problem with the +3v rails where they would drop to 2v at bootup and cause the pc to not boot, they also said newer PSUs would have a solution. my guess is that newegg's supply of them is still the older ones.
- Other Thoughts: this power supply is BIG, more then an inch longer then standard power supplies. it has tons of wires and they are long. i even had some trouble getting it in my server tower case. so i wouldn't recommend anybody with a mid tower to get this.
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Manufacturer Response:We apologize that you are currently experiencing a problem with your 850W PSU. We have found that the 850W PSU has some compatible issues with certain Motherboards. We found the problem that was caused by the min. load limit and voltage regulation, this is not a comprehensive compatible problem with all kinds of system. This issue has been fixed and improved for the next shipment. 1) We revised the "L6" from 10 turns to 20 turns from the original 850W. 2) How do you know if the version you have is the updated modified version? Check the box, and if it has the “80PLUS” sticker on it, it means the PSU is the corrected version.
8800GTX SLI, PSU Works Great!
- Pros: With six 12V rails, this PSU powers my 2 8800GTX in SLI fantastically. The PSU is silent in 2D mode and very quiet in 3D mode. It is also a standard size PSU so will fit in all ATX cases. The unit is very nice looking, giving it a very high quality look.
- Cons: No separate on/off switch on the
back of the PSU.
- Other Thoughts: I'm very happy with this PSU. I replaced a PC P&C first generation 1KW that only had 2 PCIE connectors and was pretty loud, I also couldn't get it stable with 8800GTX SLI using the adapters for the other connectors. I'm glad it wasn't stable though, because 2 8800GTX's with that PSU made it extremely loud at all times, even in 2D mode.
With the cooler master, I can hear my CPU fan spin up, my hard drive work, etc, this PSU is very quiet and very stable. Also, there is no buzzing or other wierd noises from the PSU. The one I got from Newegg.com was marked Rev 2. The PSU comes in a very nice box with very good foam padding to protect it during shipping. This is good since Newegg.com just puts it in a box with peanut foam pieces.
| Model | RS-850-EMBAD1-US |
| Type | ATX12V / EPS12V |
| Maximum Power | 801 - 900W |
| Fans | 1 |
| PFC | Active |
-
- 5
-
- 58%
- 4
-
- 14%
- 3
-
- 4%
- 2
-
- 12%
- 1
-
- 12%
| Product Rating: |
|
| Total Reviews: |
76 |
good
- Pros: good price, great features.
- Cons: nothing, unless you need more power.
- Pros: Easy install
- Cons: Not modular
- Other Thoughts: Works great and fits my power needs. I run a Core i7 920 and a GeForce GTX 295 together under this PSU.
Very capable PSU - slight load squeal though
- Pros: It handles my i7 920 OC @ 3.6 GHz (stable), GTX 280 OC'd to 285 speeds, two optical drives, two 300GB Raptor drives + two Maxtor 250GB HDs, and the case fans in my Thermaltake Armor+ case without any issues. I'm sure I wouldn't have a problem adding another card or two in there for SLI, either.
- Cons: When under load, it makes a slight high-pitched electric squealing noise. I actually didn't notice it until I had it for a few weeks.
- Other Thoughts: My rig is on and under load 24/7 from Folding@Home on the CPU and GPU clients. I use a Folding@Home GPU2 client that uses my GTX 280 to crunch the numbers for it's protein folding algorithms. I just noticed that when I pause the GPU folding, it light squealing goes away. That's how I caught it. It's slightly annoying now that I know about it because I'm always listening for it. I have another old FX55-based system with a cheapo Aspire 500W PSU that does the same thing except a bit louder. I wouldn't expect this from Cooler Master though. I might consider RMA because of it. I'm sure I just got an odd PSU though and all of them wouldn't suffer from this. If I get a manufacturer response from this review, I'll definitely RMA and re-review the new PSU (with 5 eggs hopefully).
| Model |
| Brand |
COOLER MASTER |
| Model |
RS-850-EMBAD1-US |
| Series |
Real Power Pro |
| Spec |
| Type |
ATX12V / EPS12V |
| Maximum Power |
850W |
| Fans |
1 |
| PFC |
Active |
| Main Connector |
20+4Pin |
| +12V Rails |
6 |
| PCI-Express Connector |
4 x 6-Pin |
| SLI |
Certified |
| CrossFire |
Ready |
| Modular |
No |
| Power Good Signal |
100-500ms |
| Hold-up Time |
17ms min. |
| Efficiency |
>85% Typically |
| Energy-Efficient |
80 PLUS Certified |
| Over Voltage Protection |
Yes |
| Input Voltage |
100 - 240 V |
| Input Frequency Range |
50/60 Hz |
| Input Current |
12A@ 115 Vac / 6.3A@ 230 Vac |
| Output |
+3.3V@25A,+5V@30A,+12V1@18A,+12V2@18A,+12V3@18A,+12V4@18A,+12V5@18A,+12V6@18A, -12V@0.8A,+5VSB@3.5A |
| MTBF |
>100,000 Hours |
| Approvals |
CE, cUL, TUV, NEMKO, BSMI, FCC |
| Features |
| Features |
World’s first six +12V rails for better power distribution in Quad-SLI and 2 ways server system
Four 6 pin PCI-E connectors offer great future upgrade ability
Compliance with the newest Intel standard ATX 12V V 2.2
Compliance with the newest SSI standard EPS 12V V2.91
Ultra-silent operation with intelligent 135mm fan speed control (< 16dBA)
Eco-design for energy and money saving by Active PFC.(>0.99)/high efficiency(>85%)
Multiple protection design (Over-Voltage, Under-Voltage, Over-Temperature, Over-Current, Over-Loading, and Short circuit protection) |
| Manufacturer Warranty |
| Parts |
5 years limited |
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Reviewed By: zaroba on 3/21/2007
Tech Level: high - Ownership: 1 day to 1 week
