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CoolerMaster Launches Three Budget Power Supply Units

By - Source: Hardware.info | B 40 comments

Cooler Master’s new range of entry-level power supply units feature a 120 mm cooling fan, an efficiency of 85 and are currently available in 500W, 600W and 700W variants

CoolerMaster has launched three new budget-friendly PSUs: the B500, B600 and B700, which as the name suggests, have a capacity of 500 W, 600 W and 700 W, respectively.  With regards to the 12V rail, the B500 is rated for 24 amps, the B600 for 47 amps and the B700 for 55 amps.

The units also feature a temperature-sensitive 120 mm PWM cooling fan, an MTBF of at least 100,000 hours and an efficiency of 85 percent. As is the norm for entry-level power supply units, all three have a fixed design and provide a 20+4 pin motherboard connector, two 6+2 pin PCI-e connectors (four on the B700), a 4+4 pin connector, six SATA connectors, three molex and an adaptor for a 3.5" floppy drive.

The CoolerMaster B500, B600 and B700 power supply units are currently available with a recommended price of €39.90, €49.90 and €59.90, respectively.

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  • 12 Hide
    amk-aka-Phantom , April 3, 2013 4:35 AM
    I'm sick of this "entry level" 500W units. No office PC consumes more than 300W. Part of my job is building quality office PCs for our clients (Intel Pentium Sandy Bridge CPUs, Corsair RAM, Corsair PSUs, Cooler Master cases, Asus or Intel motherboards) and the smallest I can find is Corsair CX430v2, which goes for $53 here. ONCE, I managed to find a 400W Seasonic. I don't understand why can't Corsair and others produce quality (Seasonic, or at least CWT as an OEM) units rated at 350W or so. An average prebuilt crappy office PC will have a 200 to 350W PSU that will break fast - but not because of not having enough wattage but because of bad components used. (It will often take out the other components with it.) By producing such small units, reputable brands could price them competitively and squish the no-names out of the prebuilt market AND have something for entry level PCs.
Other Comments
  • 6 Hide
    anort3 , April 3, 2013 1:47 AM
    Oh just what we need from CoolerMaster.......more "budget" power supplies.

    In actual good news from CoolerMaster they do seem to have 3 new models coming up from....??!! Seasonic !!?? Yeah I almost fainted too. The new V series in 700, 850 and 1000 watts actually using Seasonic as an OEM. Amazing.
  • 0 Hide
    Valentin_N , April 3, 2013 2:00 AM
    I wonder what 80PLUS Certificate it would get. if it gets silver they would be very affordable PSU, especially the 500W.

    What is typical load by the way?
  • 0 Hide
    ARICH5 , April 3, 2013 2:17 AM
    article said 85% so p;rolly bronze.
  • 0 Hide
    Matsushima , April 3, 2013 2:42 AM
    Bronze, if there is Active PFC.
  • 0 Hide
    Thunderfox , April 3, 2013 3:37 AM
    700 watts is entry level?
  • 12 Hide
    amk-aka-Phantom , April 3, 2013 4:35 AM
    I'm sick of this "entry level" 500W units. No office PC consumes more than 300W. Part of my job is building quality office PCs for our clients (Intel Pentium Sandy Bridge CPUs, Corsair RAM, Corsair PSUs, Cooler Master cases, Asus or Intel motherboards) and the smallest I can find is Corsair CX430v2, which goes for $53 here. ONCE, I managed to find a 400W Seasonic. I don't understand why can't Corsair and others produce quality (Seasonic, or at least CWT as an OEM) units rated at 350W or so. An average prebuilt crappy office PC will have a 200 to 350W PSU that will break fast - but not because of not having enough wattage but because of bad components used. (It will often take out the other components with it.) By producing such small units, reputable brands could price them competitively and squish the no-names out of the prebuilt market AND have something for entry level PCs.
  • 3 Hide
    janetonly42 , April 3, 2013 5:55 AM
    One thing I have learned over the years a good quality PS is critical to a stable rig. A bad/cheap power supply will cause all sorts of problems from random reboots to blue screens. Bad memory can cause random problems too, always test your memory when you receive it. Linux is good for that.
  • 0 Hide
    InvalidError , April 3, 2013 5:59 AM
    amk-aka-PhantomI'm sick of this "entry level" 500W units. No office PC consumes more than 300W.

    Even my gaming PC uses less than 150W (my UPS reports 186W load but that includes my modem, router, 24ports switch, USB hub and LCD) so I would be far more interested in high-quality (built to cleanly sustain 10-100% combined load), high-efficiency (gold/platinum) 200-250W PSU somewhere in the neighborhood of $55.

    Right now, I have a 650W Earthwatts simply because it was the only decent PSU my local PC store had in stock with long enough ATX/ATX12V cables to reach my motherboard's connectors.
    Funny that CM would announce a 'budget' lineup when their existing lower-end PSUs are already of questionable/passable quality.
  • 5 Hide
    4745454b , April 3, 2013 6:14 AM
    Yeah, just what we need from CM, more "budget" PSUs.

    I'm a bit surprised by some of this. 85% efficiency doesn't say budget to me, nor does including a molex to floppy adapter. Almost seems that these are normal PSUs. I'm guessing they are cheap because they are using older group designs and probably are missing parts (MOV, filtering caps, etc) compared to more modern designs. BTW, I'd double check the amps on the 12V rail for the 8500. 34A would make much more sense instead of 24A. And would be more consistent with the other amps listed.

    Quote:
    I don't understand why can't Corsair and others produce quality (Seasonic, or at least CWT as an OEM) units rated at 350W or so.


    No money in it. People buy based on number of watts. Not enough people would buy a quality 300-350W PSU when they can get a 430-500W for the same price. The best lowend PSU you can probably find is one of those Bestec units. They aren't THAT bad. Or a fanless model as those are usually really good, but they will be pricey.

    Quote:
    Even my gaming PC uses less than 150W (my UPS reports 186W load...


    Then you need a new gaming PC:p  My 7950 uses about what your whole system uses;)
  • 5 Hide
    Onus , April 3, 2013 6:34 AM
    Knowing what CM has released in the past, a rational individual must assume these are minimal-quality (almost junk) until they have received competent technical reviews.
  • 1 Hide
    Sakkura , April 3, 2013 6:42 AM
    amk-aka-PhantomI'm sick of this "entry level" 500W units. No office PC consumes more than 300W. Part of my job is building quality office PCs for our clients (Intel Pentium Sandy Bridge CPUs, Corsair RAM, Corsair PSUs, Cooler Master cases, Asus or Intel motherboards) and the smallest I can find is Corsair CX430v2, which goes for $53 here. ONCE, I managed to find a 400W Seasonic. I don't understand why can't Corsair and others produce quality (Seasonic, or at least CWT as an OEM) units rated at 350W or so. An average prebuilt crappy office PC will have a 200 to 350W PSU that will break fast - but not because of not having enough wattage but because of bad components used. (It will often take out the other components with it.) By producing such small units, reputable brands could price them competitively and squish the no-names out of the prebuilt market AND have something for entry level PCs.

    Antec has a few power supplies in that bracket, the BP350 and the Earthwatts EA-380D. Seasonic has a pile of power supplies at 300W, 350W etc:

    SS-300ES Bronze
    SS-300ET Bronze
    SS-350ET Bronze
    SSR-360GP
    S12II 380B
    SS-350M1U

    The problem is, a quality 300W power supply is barely any cheaper than a decent 500W power supply, and most people overestimate the wattage required.

    Edit: Whoops, a few of those Seasonics weren't ATX. :o 
  • 3 Hide
    Sakkura , April 3, 2013 6:44 AM
    OnusKnowing what CM has released in the past, a rational individual must assume these are minimal-quality (almost junk) until they have received competent technical reviews.

    Chances are these will never be reviewed at any of the reliable sites, unless they buy them at retail. Cooler Master almost never send out their budget units for review because they know the result will be awful.
  • 0 Hide
    janetonly42 , April 3, 2013 8:33 AM
    Always like Corsair PS
  • 2 Hide
    Onus , April 3, 2013 8:41 AM
    HardwareSecrets reviewed a lot of those CM units, and exposed them for the [near] junk they are.
  • 0 Hide
    dscudella , April 3, 2013 8:58 AM
    Wow, 24A on a 500W unit? That's 288W. Even the Corsair CX430 has 32A (384W) on it's 12V rail. Come on CM, you can have quality at the "low end" market, it is possible. My Corsair CX600 has a 46A 12V for 552W and I got it on sale on Newegg for $49.99 ($34.99 after MIR).
  • 1 Hide
    Onus , April 3, 2013 9:20 AM
    The old ones were made by Seasonic, but the new Corsair "Builder" units are made by CWT, using inferior Samxon capacitors from their "GF" line which is known for early failure. There's more on this in some threads on the badcaps.org forums.
  • 0 Hide
    ARICH5 , April 3, 2013 9:28 AM
    after CM made such crappy units do ya think anyone will care?...they are the rosewill of 2013.
  • 1 Hide
    Sakkura , April 3, 2013 9:44 AM
    Quote:
    HardwareSecrets reviewed a lot of those CM units, and exposed them for the [near] junk they are.

    They didn't review any of these new Cooler Master PSUs, and in fact they rarely do review Cooler Master PSUs. The last one dates back to May 2012, and the one before that was March 2011. This is probably for the reason I mentioned before - Cooler Master know their budget power supplies will usually not fare well in an honest, thorough review, so they simply refuse to ship samples for review. Problem solved, as far as they are concerned.
  • 1 Hide
    ko888 , April 3, 2013 9:49 AM
    The B Series only have a 180-264Vac input voltage range so they won't be available worldwide and won't qualify for any 80 PLUS certification. This is also a reason why they don't reviewed by reputable review sites because they aren't available worldwide.

    The OEM for the B Series is Enhance Electronics.
  • 1 Hide
    Onus , April 3, 2013 9:54 AM
    Quote:
    ...Cooler Master know their budget power supplies will usually not fare well in an honest, thorough review, so they simply refuse to ship samples for review. Problem solved, as far as they are concerned.

    Yes, and that sort of dishonesty is why I won't let up on them.
    If these new ones are 80+ bronze that might suggest they are more reasonable (despite the artificially low 23C ambient temperature that 80+ uses), except that their 80+ Bronze GX-650 was summarized by HardOCP as a "polished turd in a box."
    Edit: saw ko888's post. If they're not 80+, the 85% efficiency claim is most likely another bald faced CM lie.
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