news new 910w pc power cooling psu has 88 efficiency rating

New 910W PC Power & Cooling PSU has 88% efficiency rating

Remember that beefier Silencer power supply we spotted at OCZ’s CES booth in January? Well, it’s finally out. OCZ has formally introduced the PC Power & Cooling Silencer 910, a top-of-the-line unit with a maximum power output rating of—you guessed it—910 watts.

Being part of the same product line, the Silencer 910 takes a lot after the older Silencer 750 (which earned a TR Editor’s Choice award last year). Both units have similar-looking designs with 80mm cooling fans, plenty of connectors, high rated efficiency, Nvidia SLI certification, five-year warranty coverage, and a single, massive 12V rail.

To be more specific, the Silencer 910’s 12V rail can churn out a jaw-dropping 74A (888W). The unit has also received 80 Plus Silver certification, which means "typical" efficiency should be a cool 88%. For reference, our tests showed the Silencer 750 was roughly 84% efficient at a 50% load. On the cabling front, the Silencer 910 has two six-pin PCI Express connectors, two "6/8-pin" PCIe connectors, and 12 SATA connectors.

If you expected a PSU with those specifications to be cheap, prepare to be disappointed. OCZ’s press release says the Silencer 910 should be "retailing under $200," but the official PC Power & Cooling online store has it listed for $229.99. The 750W model, meanwhile, will set you back just $119.99 at Newegg.

0 responses to “New 910W PC Power & Cooling PSU has 88% efficiency rating

  1. GTS 250 = 150W TDP
    GTX 285 = 183W TDP

    And no I don’t run SLI…I use the video cards for GPGPU work.

  2. Nope, no SLI for the GTS 250s. I run them on an old 939 board to model molecular thermodynamics at extreme temperatures. However they re listed at 150W TDP each. Guess what the GTX 285’s TDP is? 183W.

  3. I think you’ve got a pretty distorted view of the average system and its power draw.

  4. Check out the negative reviews @ newegg for the 750w posted in the article. It appears that a lot of users that at least seem to know what they’re doing are having significant problems with the unit. Lots of DOA’s, not to mention the incredible number of rebate problems. Granted an OCZ rep responded to most of the complaints, but it’s impossible to know if there was any real problem resolution.

    (url for the negative reviews: §[<<]§ )

  5. as mentioned, these are not primarily marketed towards home users, these are in fact workstation and server grade power supplies.

  6. For the sake of clarity I should mention that I run two GTS 250s that are at 100% load 24/7 off an Antec TruePower Trio 430W PSU (Purchased for $29 at Fry’s 2 weeks ago). You can easily run 3-way SLI with GTX 285s off something like a 750W PSU…the watts aren’t as important as the amps.

  7. A reasonably powerful system such as mine (Q9400, HD4850, 2xHDD, 2x2GM RAM, plenty of USB devices plugged in) under real world stress will not use more than 350-400w.A cheap dual core, budget or IGP graphics, 1HDD etc, you could run on a 200w PSU if you wanted.

  8. At full load the losses are maximized since the components (particularly the transformer) are operating near their design limit, which eats into the efficiency. By virtue of their operating principle, switching supplies don’t handle light loading very elegantly, so losses are not doing too great there, either.

    Consequently, the peak efficiency point tends to fall somewhere in the midband of the output capability.

  9. And for the average person, that means between a 200 Watt or so spread between 400 and 600 Watts.

  10. This is not OCZ trying to sell a really high end PSU that people don’t need, this is them doing what PCP&C did before OCZ bought them…. selling power supplies of various wattage ratings people DO in fact NEED.

    Though it doesn’t stop us enthusiasts from putting them in our home computers (for a number of very good reasons too might i add), these are NOT originally meant for home computers. It’s the same as 15,000 RPM SCSI drives, yet no one would say that those are pointless because no typical home computer user really needs one. These are meant for servers and extremely high end work stations. In that case these make perfect sense. I have seen multiple work stations that do consume well above 600 watts of power when fully loaded, and as others have mentioned, most power supplies fall to their peak efficiency when they are around 50% load. Since these are designed to operate within a commercial environment, other factors need to be taken into account, one of the biggest being efficiency. Since the more efficient the more money a company saves. Remember the costs to operate computer hardware in the commercial world goes well beyond just the cost of running the computer itself, you also need to pay to have the room that computer is in Air conditioned. So buying a power supply roughly twice the size of the one you actually need will help save on the cost to run that computer not only by allowing the power supply to run within its peak efficiency envelope, but also on the cost of keeping said equipment air conditioned since it’s not spewing out as much heat as a unit that is running at 85 or 95% of its peak capabilities.

    Also keep in mind these units usually have an unusually high peak operating temperature range when compared to most other power supplies, and if i am not mistaken their warranties on these units are generally better as well when compared to power supplies marketed purely towards home users.

    Edit: few sentences and punctuations, spellings, etc.

  11. Is this now a “What PSU do you have?” thread? I have an Antec Signature 850. The 850 was cheaper than the 650 due to pricing error, so I took advantage. 83% minimum efficiency according to jonnyguru.

  12. A power supply is most efficient when you’re drawing 50% of its power (mathematically, I don’t know why).

    Therefore, it makes sense to buy a PSU that is about twice the rated wattage of what you’re drawing at a nominal load. You don’t really want to ever push your PSU near 100% load.

  13. I’ve been hearing some bad QC rumblings about PC P&C lately. Now that they’re owned by OCZ the traditional ‘PC P&C is rock solid’ may not apply :/

    Anyhow it’s nice to see high efficiency and all that but we need to see it where it matters, in lower wattage PSUs. These monstrosities are only useful in quad core multi GPU overclocked systems that spend all their time doing DC.

  14. I bet I have the weakest decent-quality PSU in the group – a Seasonic 380W that’s 80+ Certified (bronze).


    According to my kill-a-watt, I’m never drawing more than 200W on this thing, even if I load up [email protected] and crank up 3DMark 06, and that’s with an OCd CPU.

  15. If you’re using AMD cards, the performance delta of 2 cards is very large (for what it’s worth), and it’s often respectable with 3 cards as well.

    NVidia drivers eat more CPU cycles and thus you need a beefier processor to see comparable benefits.

  16. Load of garbage, if a person is so anal about 2-3% of power supply ‘efficiency’ they wouldn’t bother getting SLI or Crossfire in the first place, because it yields what, maybe 70% extra performance in the best case scenario?

  17. PCP&C units are for the people that actually DO need beefy as all hell power supplies, not like the 600w $20 units that would die under a heavy load.

    for the record though, I’m rocking along with 550w Corsair VX units.

  18. Or there may be some non-idiots who
    A) have more than 2 videocards
    B) have 2 very beefy videocards
    C) care about efficiency, which then leads to cooler operation and ultimately more silence as well

    I wouldn’t get this thing either, considering the price and comparative performance of the older Silencer, but if I had money to burn, I probably would.

  19. Don’t really need SLI either 😛 For me the useful range of power supplies ends at 600W. Even gaming PCs don’t have to consume more than that.

  20. I see PSU makers are still desperately trying to oversell the wattages of PSU’s. Nobody really needs 900w+ of output. Yet you know some idiot with mid range SLI will think he does and spend about $100 more than he needed to.