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  • Gothik - Monday, January 07, 2008 - link

    hi everyone,

    a noob here. I was wondering whether to get this PSU for my upcoming rig. I'm gonna run a quad core q6600, 4 sticks of ddr2 RAM, and a gf 8800GT (maybe SLI later). I was wondering, if the PSU is rated at 800w like the one being reviewed, does that mean that it is powered constantly at 800w or will the mechanism in the PSU determine the actual power consumed? Also, the author mentioned that there are a few PSUs that peform equally to this unit but cost less, can I know which ones are they?

  • QueBert - Monday, July 30, 2007 - link

    about to buy a new PSU, want something future proof and modular. This looks about perfect for my needs. I find it odd that my Ultra X, which is years old and was the first Modular PSU. Still has better looking cables than any other modular unit on the market. Gigabyte seemed to step up the modular appearance a bit though. Kudos to them for that. Reply
  • wrong - Wednesday, July 25, 2007 - link

    I can think of an excellent reason to honeycomb the side wall and put a sheet of plastic in to block airflow.


    Not necessarily what they had in mind, of course. But LAN boxes should be light, and this could be one way to cut weight without reducing heatsink size and compromising cooling performance or noise.

    I wonder if it makes a difference to EM noise.
  • Bozo Galora - Wednesday, July 25, 2007 - link

    I really really like the way you do these PSU reviews. Much more informative indeed than anything else on the web. I am a bit dismayed over the way AT reviewers sugarcoat conclusions on obviously poor performing equipment - tho I understand why you have to do it.

    Now heres a review I would like to see......
    There is a just out new Coolermaster MODULAR 1000W PSU with humungous rails">
    Heres the first review.......">
    This is the new esba model, NOT the current emba
    Note in the review are the usual stupid useless graphs showing "rock solid" unchanging rails. Since I am about to buy, I would love to see how your review compares. And this is modular so it might help in your investigation of this modality.

    Keep on truckin'
  • erikpurne - Tuesday, July 24, 2007 - link


    While I think the Efficiency charts in load percentage are nice, if you included Efficiency charts in watts it would be more informative from a buying perspective.

    Totally agree. It would be much easier to see where your system typically falls on the efficiency graph.

    Also, on the 'Power Loss' graphs, the upper line should be input, and the lower one output. Oh, and watts are power, not energy!
  • Myrandex - Tuesday, July 24, 2007 - link

    You should pictures of the LEDs, but there should have been a lights out LEDs enabled pic :)

    Good article though, and the build quality looked fantastic
  • the goat - Tuesday, July 24, 2007 - link

    I assume that the software is only for windows? Of course the power supply will operate without the software but it would be nice to use the product to it's full potential with any operating system. In future articles please tell us if there is software for linux or not. Reply
  • Vidmar - Tuesday, July 24, 2007 - link

    While I think the Efficiency charts in load percentage are nice, if you included Efficiency charts in watts it would be more informative from a buying perspective.

    The reason? I know the sum of system load is 375watts normally. The way it is now, if power supply XYZ has a max load of 650watts, I have to calculate where my ~375watts falls into that load chart (~57% load). But if the next power supply has 1000 watts max, then I have to yet again calculate what load percentage that may be for *that* power supply. If the Efficiency charts were in watts, instead of load, no calculations would be necessary. If I could look at your charts and see that XYZ power supply provided those watts the most efficiently, that would be the power supply I would get.

    Maybe you could just provide a second X axis on the chart that included the watts.

  • MadBoris - Tuesday, July 24, 2007 - link

    I really like the software component possibilities, looks like it needs some tweaking though like with 18a max per rail.
    As to memory and CPU usage, well that is .Net for you, that footprint problem is here to stay. Thx to MS.

    I'm a little curious to the max 25a per rail.
    Nvidia states 8800 GTX should have 30a">Link
    Maybe someone can clarify the real draw of an 8800 GTX and is 25a completely sufficient.
    What about next gen?

    Good review, looking forward to more like it.
    As cool as this PSU is, $200+ is a bit too much for a PSU.
  • Christoph Katzer - Tuesday, July 24, 2007 - link

    Depends on how much your graphics card needs to work. When your display just has 1024pxl in width you can run the 8800 in a decent system with a 300w psu. If you are using a 30" screen with 2560pxl in width it is a total different story. But don't worry, we are working on an article to make things like that very clear. Reply
  • strikeback03 - Tuesday, July 24, 2007 - link

    Does the software need to be running for the voltage regulation to work? Or can you make changes then close the software and have the changes still work on the PSU?

    Also I'd guess if UV lighting is that useful for a case you could swap the blue LEDs for some UV ones - looks like enough wire is exposed to cut the blue ones and solder in UV ones.
  • Oberst - Tuesday, July 24, 2007 - link

    nice review (i wouldn't expect anything else of you). But I've got a question about the measuring-software: Was it reliable, when measuring voltages? You already mentioned, that the wattage was not reliable. So I'd like to know, if that was because of wrong measured amps or volts.
    greets Oberst.
  • Christoph Katzer - Tuesday, July 24, 2007 - link

    Voltages have been quite accurate; amps have been wrong in almost every case. Reply
  • qpwoei - Tuesday, July 24, 2007 - link

    Once you've got the ripple measurements sorted out, it'd be nice to get some scope traces as the load changes. Poor transient response of the rails can cause all sorts of hard-to-diagnose problems in the real world. Reply
  • Christoph Katzer - Tuesday, July 24, 2007 - link

    We use a scope to follow response on the rails but until now we feel the data is not good enough to present. If there would be something to extraordinary to tell we surely would. Reply
  • bob4432 - Tuesday, July 24, 2007 - link

    what about that? a good quality unit, the Corsair 520HX seems to be a lot of people's favorite lately, how does it really stack up? or some of the FSP "Green" units - are they really that efficient? what about seasonic - really as good as everyone says?

    these reports are all fine and dandy, but you are catering to possibly 5% of your user base, yes even here 800W is extreme overkill.

    and it is not a $$$ issue but rather a reality issue. i am surprised you guys testing these are continuing the thought process by only reviewing the upper wattage units and thus making everyone think they need one when they don't - people on review 750W psus, so i must need one...come on guys
  • Christoph Katzer - Tuesday, July 24, 2007 - link

    Will come. No worries about that. At the moment we are just starting as you can see and of course every company wants to have the best PSU tested first. We'll have lower ones very soon but need to work on that mountain of PSUs here first. With 380w you will see a Seasonic pretty soon for example. Reply
  • bob4432 - Tuesday, July 24, 2007 - link

    will definitely be looking forward to them :) Reply
  • ATWindsor - Tuesday, July 24, 2007 - link

    I disagree that an OCP per rail i s a good thing, it onyl makes using the PSU more of a hassle, since you can draw a lot less from the PSU on 12V than the specs would make possible, if you are unlucky and draw most of it from one rail. Several manufacturers have one big rail without any know safety-problems, having an OCP for the combined drav from the 12V-lines however is a good thing.

  • dare2savefreedom - Tuesday, July 24, 2007 - link

    I would be interested in knowing how a psu runs with dual 8800gtxs in virginia in summertime in an old house with a window air conditioner.

    Not these theoretical white glove clean room lab environment tests.

    triple sli 8800gtx?

    come one stop playing with your iphone.
  • mostlyprudent - Tuesday, July 24, 2007 - link

    Read the test methodology article. Reply
  • neogodless - Tuesday, July 24, 2007 - link

    Did you find any issues with the modular design? Obviously the efficiency was good. Could anything else have been affected by the additional connection point? Reply
  • Christoph Katzer - Tuesday, July 24, 2007 - link

    I am in the midle of testing that with other models. I will write something which will bring light in this in matter... Reply

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