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Thread: what would you notic if your power supply is not enough for the system?




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    Default what would you notic if your power supply is not enough for the system?

    ?

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    Default Re: what would you notic if your power supply is not enough for the system?

    Perhaps, it all depends.

    Sometimes if the PSU is not good enough it wont even start the system.

    Your PSU is the single most important part of your system, you should never skimp on wattage or buy a cheap one

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    Default Re: what would you notic if your power supply is not enough for the system?

    I have 2 HD5770, 1 blu-ray and 1 DVD re-writters, 3 hard drives, 6 fans and are powered by a Corsair 750W.

    Does it sound enough or need a 1000W?

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    Default Re: what would you notic if your power supply is not enough for the system?

    If you try to pull more the power supply shuts down (protection kicks in), that is way above 900 Watts. They could have labeled it 900 watts but either noise and ripple levels are very close below the maximum allowed (110 of 120mV on 12V) or efficiency drops below 82%, depending on which 750 model you own.

    2 5770s are ~ 200 watts. the second most important consumer is the cpu, the rest is of little importance.

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    Default Re: what would you notic if your power supply is not enough for the system?

    There is a usefull online psu check for systems..which unfortuanately i dont have a saved link to.
    U just enter cpu type ,whether its overclocked or not,number of gx cards,type,number of hdds,optical drive,fans etc etc

    My system is calculated to need 369w,If I added in a more recent gx card + overclocked it it would be more like 430w.
    The checker also calculates in an approximate 10% drop on the actual psu rating as its output deteriorates with age.
    If I find the link again ill post it .It was something like pc power info.
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    GTX 460 1GB x2 SLI ................. Msi 9600GT 512MB(died) ........... Onboard gx
    Win7 64 ,750w psu(ocz)............ Win7 64 ,520w psu,seasonic...... Win XP pro ,400w psu

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    Default Re: what would you notic if your power supply is not enough for the system?

    I noticed failure to boot. It would get to the starting windows graphic then drop back to do a disk check. Blue screens. Constant rebooting loop.

    I had purchased new motherboard, new processor, new ram, but kept the old case and PSU. I checked it and saw it was old and only 300 watts. Replaced it with a new 600w and everything worked fine. thankfully no damage was done and am looking for new case now.

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    Default Re: what would you notic if your power supply is not enough for the system?

    I had a friend who had an underpowered psu for her new build (not gigabyte). She wanted to use her new gtx260 and I had warned her that I was pretty sure the psu wasn't enough for her card. She tried it and it worked, for awhile. Then one day she heard a pop and smoke was coming out of her computer. The PSU was fried. Fortunately it didn't kill the board or card.

    Video cards need a certain amount of amps per rail to operate properly. Definitely research your devices and PSU if you think you're close to the limit. My friend got off lucky, she could have easily lost the mobo and video card.

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    Default Re: what would you notic if your power supply is not enough for the system?

    A Google search using:
    psu calculator
    will provide links.
    You Corsair 750 watt psu is sufficient for your setup.
    Many cheap units won't meet advertised power ratings or stay within specs.
    Sometimes a fried psu will destroy attached hardware, such as mobo, memory hard drives,, etc.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
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    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


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    Lsdmeasap's Avatar
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    Default Re: what would you notic if your power supply is not enough for the system?

    Ya, I think 750 is good, but we don't know what board/CPU you are using, it should be fine no matter though.

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