Power Supply FAQ

Discussion in 'General Hardware' started by Makalu, Feb 10, 2009.

  1. Berilas

    Berilas Member

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    Hi Makalau,

    First, excellent Post, very helpful
    Second, can you please have a look on my PSU? In my opinion is a very good one, no problems so far in fluctuations or heat/noise. However, after installing my new video card 275GTX I’m looking for something new and more powerful.

    So far, used it for 2 days, no sign of fatigue, no noise/heat increase, also I have unplugged any unnecessary consumer, so currently I’m running on open case, no fans, 2SATA HDDs, CPU, MB and DVD-RW, NIC+Sound removed as I’m using onboard ones. No overclock on CPU/RAM.
    So far the video card is stable, no issues at all, and except World of Warcraft (which takes 5-10% more load then idle) I’m afraid to try something else due to my low PSU.

    My question is: will I be able to use this PSU, as above, safely 1 more month until I will upgrade it on my current system?

    Your advice would be much appreciated, thank you !

    link to an old review on my old PSU, with proper pictures, as well for further info
    http://www.tomshardware.com/reviews/stress-test,1073-14.html
     
    Last edited: Nov 5, 2009
  2. Makalu

    Makalu Ancient Guru

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    well your loads when running games will be in the 300-350W range...heavy for the PSU but not extreme...should be just fine for as long as you wish
     
  3. Berilas

    Berilas Member

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    Many thanks Makalu,

    I was looking forward for your reply,

    Cheers ! :cheers:


    Update:

    So far everything worked well with my old PSU but I was also careful about my consumption.

    But time has come to upgrade as I mentioned before.
    As a result, I now hold in my hands a brand new Thermaltake Thoughpower XT 750W 80 Plus Bronze, modular PSU for which I paid 176euros.
    I consider this to be the best PSU I can buy at this moment taking into consideration my usual needs, and will be also more than enough for any future system upgrade as well.

    It has a total of 720W maximum load on the 12v rail which means 60A, strong quality build, full package with cables, adapters and everything you can need, and above all comes with a 5y warranty which I hope I will never use :)

    If anyone needs more info/details about this specific model I will be more than happy to provide.

    Thanks again Makalu for the tips


    Ciao!
     
    Last edited: Dec 9, 2009
  4. viren

    viren Ancient Guru

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    Makalu, first off, thanks for your support. I am using Cooler Master Silent Pro M700 for about a month now and i have noticed a 5-8 deg cel drop in temp particularly for the gpu and the cpu as opposed to my prior Cooler Master Real Power Pro 850W Psu.

    Though its a good news that the temps have dropped after switching to the new psu, why would my old psu give me higher temps?
     

  5. Makalu

    Makalu Ancient Guru

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    well the tolerance range for the 12V is plus or minus 5% which means two different PSU's could vary by 1.2V and still be within the guidelines...certainly that's the extreme but even say half a volt higher with the new PSU would make all of the fans spin several hundred rpm's faster depending on the fans so that's probably the main reason...I dunno...hard to say unless they were both measured with a multimeter.
     
  6. Makalu

    Makalu Ancient Guru

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    just a bump since I finally got around to adding some more FAQ's...feel free to critique and suggest more FAQ's since I'm starting to run low on ideas...
     
  7. 41LY45

    41LY45 Active Member

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  8. Makalu

    Makalu Ancient Guru

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    yeah thanks...the number of sites doing quality reviews is slowly increasing
     
  9. Liranan

    Liranan Ancient Guru

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    Lately my PSU's started ticking or making the sound of a spinning HD. It's a very odd sound and when it stops my PC BSOD's. I have had this Toughpower 700W for nearly four years now and it's served me well, so, I'm not surprised it's on its way out.

    To replace this thing I've been looking around and the two easiest available brands are Antec and TT. The PSU's I've been looking at are the True Power series and the Touphpower series. I have the 105 version of the TP 700 and wouldn't mind getting another, but it's not cheap and the Antec 700 is quite a bit cheaper than the TT.

    My problem is that I don't really know how many Watts I really need to get. According to the Extreme PSU calculater I only need a 436W one, but I intend to keep it for several years, like I have this one. What would be good for me to get, keeping in mind I might upgrade my video card when AMD release their 6000 series?

    Edit: seems I can also get Coolermaster PSU's, but they're really expensive and beyond my price limit.
     
    Last edited: Jun 3, 2010
  10. Makalu

    Makalu Ancient Guru

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    well it's impossible to know how much power the HD6000's will draw thru the various connectors until they actually come out and can be tested. Obviously a faster chip will draw more but they'll also negate some or all of that with the new 28nm die process too.

    Anyway, it's safe to assume that there won't be a gigantic jump from one generation to the next so I think 700 total watts will still do the trick for a single card setup. 12V wattage and connector distribution still a mystery but the Antec TP New is going to be a better choice then getting another Toughpower 105. Besides just the newer more efficient DC-DC design the Toughpower CWT-PSH design is getting a little outdated and the 105 in particular didn't have a very good rail distribution to accommodate future cards with two of the three PCIe connectors plus half of the 8-pin CPU connector all on one rail. Sees some problems with those (albeit it was all dual card systems) where people had to go to PCIe-molex adapters to get power off the underutilized drive rail.

    The TP New has a better layout there with the PCIe connectors on rails by themselves. The new Toughpowers with single-rail design would be fine but as you've noticed the price on the whole Toughpower line hasn't dropped down to really compete with the competition.

    Just a FYI I have a 700W Toughpower 106 (modular version) that's just a little over 4 years old now and running a system here and think it's nearing the end of it's life too. It also did some "hard time" on my full load tester/hotbox setup though too. But a week or so ago it shut off during a thunderstorm when strangely enough nothing else in the house shut off or even lights blinked. Then it would shut down about once a day every day. The outlet it was on at the time had a lot of other stuff on it and the voltages from it were a little low for my house so I moved it to just another outlet on the same circuit and it's working for now with no shut downs but then I notice it makes some weird little kinda squeaky noise that's hard to describe intermittently.

    Anyway yeah go for the Antec between those...it's been out long enough to know that the new design doesn't have issues...the FAQ is getting a bit outdated too but damn I have too many pans in the fire as it is.
     

  11. Liranan

    Liranan Ancient Guru

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    At the time the TP's were excellent quality and highly advised but that was pre-8xxxx's and the 7900's/X1800's were king, so that's a very long time ago. I don't know much about PSU's but won't get another TT, as I said, they're pretty expensive for the performance they offer.

    The two Antec ones I have in mind are the following:
    TP-650
    TP-750

    My last question is, would the 750 be overkill? If not I'll get that, as I need to order the PSY tomorrow, my PC crashed and BSOD'd with the PC stressed earlier. I like to run my CPU and video card at 100% when I'm not gaming, as I donate my spare time to science through BOINC.
     
    Last edited: Jun 3, 2010
  12. Makalu

    Makalu Ancient Guru

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    ah well four years ago it would have been the TruePower Trio that was popular...the ones you're looking at is a newer and completely different design dubbed TruePower New (yeah very catchy name they came up with) that has been out just slightly over one year now.
     
  13. Matt26LFC

    Matt26LFC Ancient Guru

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    Hey all, im currently modding my Antec CP850, now the SATA power cable is much longer than i need, im thinking aboutshortening the length be cutting a piece out and then soldering the ends lenghts back on. Can anyone recommened a soldering Iron to use? Or if i need a certain type of solder for this?
     
  14. Makalu

    Makalu Ancient Guru

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    anything in the 20-40W range will work fine...and no you don't need a special solder
     
  15. Matt26LFC

    Matt26LFC Ancient Guru

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    Cheers Makalu, so would something like this be ideal?

    Thanks
     

  16. Makalu

    Makalu Ancient Guru

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    yep that'd be fine and a good price too
     
  17. Matt26LFC

    Matt26LFC Ancient Guru

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    Great, just put the order in with Amazon.

    Cheers for the help matey

    Matt
     
  18. Jetsam

    Jetsam New Member

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    Firstly, thanks Makalu for all this information. I didn't know much in this area other than the basics and this really helped me understand a bit more about it. I'm still a little lost on multi-rail 12V but after reading your information I have a much better picture of what is going on.

    Secondly, I'm about to go through a system upgrade. Some of the components in my box are pretty behind compared to others (ahem, I'm talking to you RAM) and I'm curious about your thoughts on my current PSU. I got it a few years back (2008) I believe and had plans to keep it as long as possible but I notice no one is mentioning them, for better or for worse.

    I was aiming for a higher end i7 proc, some triple channel ram, and the GTX 480. No aims to overclock now, but I wouldn't rule it completely out. What are your thoughts on my existing PSU (specs can be found here) in conjunction with my new system expectations?
     
  19. Makalu

    Makalu Ancient Guru

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    well it's only about another 50-75W and still not coming anywhere close to overloading your PSU...should be fine
     
  20. dudecat64

    dudecat64 Ancient Guru

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    Makalu i have a very important question for you. What is a good psu (modular) for around $100. I have seen the hec brand which i have one now and it works ok just not up to snuff especially when i get my second 5850 next year. So what would you req'd for me? Thanks dudecat.
     

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