Cooler Master UCP Ultimate 900W PSU
Written by
Richard Swinburne
November 27, 2008 | 09:22
Companies: #cooler-master
1 — Cooler Master UCP Ultimate 900W PSU2 — The Ultimate Showdown of Ultimate Destiny3 — Cables and Connectors4 — What’s Inside?5 — Testing Procedure and The 80Plus Program6 — Results7 — Comparative Efficiency, Value and Final Thoughts
Manufacturer:Cooler Master
UK Price (as reviewed):£164.97 (inc. VAT)
US Price (as reviewed):$229.99 (ex. Tax)
In an era of greatly reduced consumer spending, it’s hard to assume there are those still wanting premium products anywhere. Enthusiasts will be enthusiasts though and, as a long term investment, the 80 Plus Silver rated Cooler Master UCP 900W PSU might seem attractive to save some long term cash, as it sports upwards of 85 percent efficiency across the entire range of operation.
Cooler Master has pimped this «Ultimate» PSU to be its… ultimate product with a ruggedised exterior and «Ultimate Circuit Protection,» or UCP as it stamps it. Cooler Master claims it has «first-class soft circuits» to extend component life, as well as «continuous active clamp forward switching technology and the D/D VRMs circuit design achieves over 88% efficiency.»
The design is based on a main 12V converter and then DC-DC conversion to 3.3V and 5V, which is a popular new technique that increases efficiency.
Models range from 700 to 1,100W but, as the 700W is only bronze certified, we decided the 900W was closer to what our readers might want, with the best balance of price and performance.
While these premium units are like the F1 of PSU manufacturing (a strange association, I know), there tends to be lots of competition in the high end and they’re chasing very few buyers, so why make one? Excellence, of course. By creating a fantastic high end product, Cooler Master extends its brand and technology lower down the range, increasing sales.
But there’s the crux — is the UCP 900W a fantastic product? We donned the white coats, strapped on the goggles (which still do nothing), and got ready to throw everything at it.
Click to enlarge
The box is frankly huge. It’s not for an equally super-sized power supply though, it’s simply got about two tonnes of foam protecting the unit, so even if the All Blacks started to hold Monday evening practice in your local post room, it should still get to you in one piece.
In the box there’s a general overview manual, as well as an entirely pointless CD containing less than 4MB of multi-language PDF manuals, which offer barely more information than the single piece of paper included in the box. In addition, there’s also a warranty card, a power cable and four case screws. As a non modular power supply and premium bit of kit we were hoping at least for some zip ties or Velcro cable ties here, but none are provided.
The power cable is surprisingly important because it uses a different square type rated to 16 Amps, instead of the usual kettle lead style that’s limited to 10 Amps, and the two aren’t interchangeable at all. Be Quiet! also uses one for its high power supplies too, and we were told that it’s simply because it provides a more reliable connection. Fair enough, eh?
Click to enlarge
1 — Cooler Master UCP Ultimate 900W PSU2 — The Ultimate Showdown of Ultimate Destiny3 — Cables and Connectors4 — What’s Inside?5 — Testing Procedure and The 80Plus Program6 — Results7 — Comparative Efficiency, Value and Final Thoughts
CoolerMaster UCP 900W review | TechRadar
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Offering over 85per cent efficiency in all our tests, the UCP 900W is a great choice
TechRadar Verdict
Simply a great PSU that we are happy to give a gold award to.
If you can live without the 150W extra on the Enermax, this is the PSU you should choose
TODAY’S BEST DEALS
Pros
- +
Fantastic efficiency
- +
Non-modular improves lifespan
- +
Soft start is useful
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The UCP 900W looks more like a cube of granite than an actual power supply, and cleverly, the logo is the right way up which ever way you install it. Great, if you like that kind of aesthetic detail.
Coming in at half the price of Enermax’s Revolution, but only delivering 150W less power, it’s an all-round winner. Admittedly, it can’t be pushed as far as Enermax’s muscular beastie, but for single or dual-GPU gaming the UCP 900W will provide a stable environment.
Rather wisely, Coolermaster has chosen to omit the modular design in favour of high quality cables connected directly to the power supply, which bodes well for its lifespan.
The UCP of the title refers to ‘Ultimate Circuit Protection’, which, as the name suggests, protects the PSU’s components.
It also includes unique soft-start circuitry which will prevent the inrush of current being too sharp, and as a consequence it achieved the best result in this area of the PSUs tested.
The quality components don’t end there. Even the three-pin mains connector is of the chunkier variety that we’re normally used to seeing on higher-rated power supplies, and the capacitors are reassuringly Japanese-made. It all adds up to a power supply that punches well above its weight.
Coolermaster’s PSU was, in fact, the very first to be awarded with the 80 plus certification, and it provided over 85 per cent efficiency in all our tests. This would actually be enough to push it into the silver realms of the 80 plus scheme, making it the only one in our test to do so.
The UCP 900W also provided the lowest inrush current and standby power of the PSUs that we ran through the tests.
Standing pretty much right in the centre in terms of results, the UCP 900W wins the gold for being stable under a standard load, but still more than capable of being pushed that little bit further. It even comes with a five-year warranty, so it’s going to see you through many, many years of gaming pleasure.
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Cooler Master UCP 900W (RS-900-AAAA-A3) Power Supply Manual in Russian
In the presented list of manuals for a specific Power Supply model — Cooler Master UCP 900W (RS-900-AAAA-A3). You can download the instructions to your computer or view online on the pages of the site for free or print.
- Instructions and files
- Characteristics
- Major breakdowns
- Repair Services
If the instruction in Russian is not complete or you need additional information on this device, if you need
additional files: drivers, additional user manual (manufacturers often for each
product make several different technical assistance documents and manuals), the latest firmware version, then
you can ask the administrators or all users of the site a question, everyone will try to respond promptly
to your request and help as soon as possible.
Your device has the specifications: Form factor: ATX, Power: 900W, Standard: ATX12V 2.3 / EPS12V, PFC: active, Cooling system: 1 fan (120mm), Fan speed: 800-1500rpm, see next tab for full specifications.
| cooler-master-ucp-900w-rs-900-aaaa-a3-guide.pdf | User Manual | |
| cooler-master-ucp-900w-rs-900-aaaa-a3-certificate.doc | Download certificate of conformity |
Download
For many products, to work with Cooler Master UCP 900W (RS-900-AAAA-A3) you may need various additional files: drivers, patches, updates, installers. You can download these files online for a specific Cooler Master UCP 900W (RS-900-AAAA-A3) model or add your own for free download by other visitors.
| No files found |
If you did not find files and documents for this model, you can look at the instructions for similar products and models, as they often differ in small changes and complement each other.
Be sure to write a few words about the product you purchased so that everyone can read your review or question. Be active so that as many people as possible can find out the opinion of real people who have already used Cooler Master UCP 900W (RS-900-AAAA-A3).
The main and most important characteristics of the model are collected from reliable sources and similar models can be found by characteristics.
| General characteristics | |
| Form factor | ATX |
| Power | 900 W |
| Standard | ATX12V 2.3 / EPS12V |
| PFC | active |
| Cooling system | 1 fan (120 mm) |
| Fan speed | 800-1500 rpm |
| Connectors | |
| Motherboard connector type | 24 pin |
| Number of sockets 4 4 pin CPU | 2 |
| Number of 6-pin PCI-E slots | 4 |
| Number of 8-pin PCI-E slots | 2 |
| Number of 15-pin SATA connectors | 9 |
| Number of 4-pin IDE connectors | 5 |
| Number of connectors 4-pin Floppy | 1 |
| Current | |
Line current 3. 3V |
25A |
| Line current 5 V | 25A |
| Line current 12 V 1 | 25A |
| Line current 12 V 2 | 20A |
| Line current 12 V 3 | 22A |
| Line current 12 V 4 | 22A |
| Line current -12V | 0.5A |
| Line current 5 V Standby | 4A |
| Additional information | |
| Color | black |
| Surge protection | yes |
| Overload protection | yes |
| Short circuit protection | yes |
| Dimensions (HxWxD) | 86x150x190 mm |
Here is a list of the most frequent and common breakdowns and malfunctions in power supplies. If you have such a breakdown, then you are lucky, this is a typical malfunction for Cooler Master UCP 900W (RS-900-AAAA-A3) and you can ask a question about how to fix it and you will be answered quickly, or read the questions and answers below.
| Breakdown name | Description of failure | Action |
|---|---|---|
| Short Circuit | ||
| Burning smell | ||
| Not included | ||
| Not Spinning Cooling Fan | 2B. Instead of 12 on the Fan Connector. All Other Voltages Are Normal. The Fan Is Correct. What Could It Be? | |
| Just Turned Off And Began To Create Short Signals | Enermax Infiniti 720 Sli 720W (Ein720Awt-00) Shut Down And Began To Generate Short Beeps | |
| Won’t Start Under Load | Won’t Start Under Load, No Load Runs, All Voltages Are | |
| Turns on and off spontaneously and randomly | ||
| Exploded Capacitor | Can’t Find Schematic A 200 Volt 680 Microfarad Capacitor Exploded And Two Elements Located Near It, Since They Were In Heat Shrink Burned Out Completely — Help Recognize These Radio Elements | |
| Not included | When replacing a standard fan with another similar one, the bp does not start.
|