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Thread: [HELP] Power supplies doing screeching noises




  1. #11
    Join Date
    Mar 2009
    Location
    Earth
    Posts
    849

    Default Re: [HELP] Power supplies doing screeching noises

    Glad your getting it figured out M8 and G/L

  2. #12
    Join Date
    Apr 2009
    Location
    J'Habite En Angleterre
    Posts
    2,431

    Default Re: [HELP] Power supplies doing screeching noises

    There's no point what so ever exchanging a PSU so that you get ATX 2.3 instead of 2.2

    The differences are:

    ATX 2.2 specifies a PSU should be a minimum of 80% efficient at any load, where as ATX 2.2 states 75%. The TX650 is already at least 80% efficient across the whole load range, so it's irrelevant.

    ATX 2.3 reduces the minimum load requirements on the 4/8 pin CPU power plug. In particularly high wattage 2.2 supplies coupled with CPU's that use next to no power in initial boot up, a failiure of the PSU to start was possible. ATX 2.3 reduces the minimum to reduce the occurance of this issue. This was only usually with PSU's of 1KW+, and if your Corsair TX powers on your PC, then again, it's irrelevant.

    It's not worth paying attention to ATX versions unless the major version number changes, ie from 2.3 to eg 3.1. Minor revisions are trivial in nature. ||||For example, version 2.2 changes were simply "Higher quality connectors for the ATX 24 Pin connector". These connections were perfectly fine in version 2.1, but was changed to accomodate future boards and high end server boards/skulltrail. To be honest the connectors on 2.1 are still fine for those purposes, more than fine infact.

    Just for referance, one large 12V rail is generally much better than several smaller rails. Whebn limited to smaller rails, some high draw devices can be starved of power. For example you have a PSU capable of giving 50A on 12V. This is split into 2x 25A. A GFX card is inserted with a 27A peak (ie it draws that for a split second before droping to a normal 18A). Your 2 rail PSU will latch and turn off due to over current. If it were a single 50A, you would have been fine.

    EPS is a standard that means the PSU is "Entry level server" ready, IE it has an 8pin CPU power plug as standard. If your board only has a 4 pin, the standard is irrelevant to you. I believe the TX does have an 8pin. If using the HX620, etc, Corsair will gladly post you a replacement modular cable with an 8 pin connector on it. EPS spec has nothing to do with the PSU's innards, it's purely superficial.
    Coolermaster CM 690 II advance Case
    Corsair HX750 (CWT, 91%(80+ Gold rated @230V) single 62A 12V rail
    P55A-UD4 v2.0 @ F14
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  3. #13
    Join Date
    Aug 2010
    Location
    vancouver
    Posts
    1

    Default Re: [HELP] Power supplies doing screeching noises

    Hi all,

    I want to say this post did the trick for me.
    I had screeching noise from my PSU when I tried to install applications synchronized with HDD access.
    It would continue to screech and my whole system would shut down and reboot even before installation completes.
    After disabling C1E in bios, I tried installing the problematic programs again and this time installation completes without any screeching or whining from the PSU.
    I'm not sure why C1E makes a difference but I'm glad i read this post. Thank you guys.

    My system:
    Chassis: Cooler Master CM690 II Advanced
    PSU: OCZ 850W
    GPU: Gigabyte GTX460
    CPU: Intel i7 930
    HDD: Western Digital 1TB
    MB: Asus P6X58D-E
    Memory: Kingston 1066 4G
    OS: Win 7 ultimate 64-bit

  4. #14
    Join Date
    Aug 2009
    Location
    Birmingham,Great Britain
    Posts
    9,250

    Default Re: [HELP] Power supplies doing screeching noises

    use windows balanced power saving profile from within win7 power saving options and disable c1e in the bios,it will throttle the cpu at idle with no noise if you set it up this way,for xp look in power options and choose minimum hardware for the same thing
    Gigabyte z77x UP4-TH F11c Modded Bios
    Intel i7 3770k 24/7@4.8ghz 1.38v Turbo llc +0.165v dvid multithreading enabled
    Samsung Green(MV-3V4G3D/US) 8GB @2133mhz 9-10-10-21-1t 1.55v
    Thermalright Silver Arrow Cpu Cooler
    1xSamsung 840 pro 256 Gb SSD windows 8.1 pro 64bit
    1xSamsung f4 HD204UI 2tb hard drive Storage
    Powercolor 7970 3gb V3 @1150mhz core/1700mhz mem,1.150v Accelero aftermarket air cooler 55c max
    Razer Lycosa Keyboard
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    Lite-On iHAS124-19 24x Sata DVDRW
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    L.G E2260V L.E.D 1920x1080 Monitor
    Xfx Pro 750w silver rated Psu 80+
    Fractal Arc Midi Case

    http://i38.tinypic.com/14myvfa.jpg x58 ud5 <=3.8ghz + 4.2ghz Overclock Template!!
    http://www.youtube.com/user/warren304#p/u Visit Me On Youtube

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