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    #1

    PSU advice requested

    I've got the famous 550w AcBel powering my rig right now. It's a beast, and has ran my new system flawlessly since this summer.

    However, it's loud. It's not wind-tunnel status, but it annoys me because it makes sleeping with the computer on very difficult, nearly impossible.

    I want to replace it with something quieter, found this on hypermicro:

    http://www.hypermicro.com/itemdesc.a...02045&eq=&Tp=#

    It's a 400w HiPro.

    My question to you guys is, will a 400w be able to run this rig reliably:

    -Core 2 Duo E7500 (75W TDP) (on a Gigabyte EP45-UD3P motherboard)
    -Radeon 4850 graphics card
    -3 case fans, two SATA HDD's

    I know my rig isn't exactly power hungry, but at the same time it's no pushover either because of the graphics card. 400w should be fine, right?

    Also my motherboard is EPS12V, and this isn't an EPS PSU. Would that pose a problem?
    Tags: None
    #2
    Re: PSU advice requested

    Ever think of replacing the fan in the Acbel with the same or greater CFM but less decibels?

    Blade design is everything with fan noise.
    Elements of the past and the future combining to make something not quite as good as either.

    Comment

      #3
      Re: PSU advice requested

      That fan must be cranking to be making that much noise. Does it run at constant speed? No variable speed?

      I've 2 in separate rooms and both are dead quiet. The case fans make noise, not the PSU's. Did you have it apart and perhaps not get a connector back together correctly? I did.

      Toast
      veritas odium parit

      Comment

        #4
        Re: PSU advice requested

        WLG I agree with Krankshaft. Install a nice quiet fan in that AcBel. If it has any age to it recap it while you are at it too.
        I also like HiPro units. Some years ago I took a load of junk parts up to my friends PC shop. A year or so later I needed a PSU for my Dell PIII. I'm up at the shop digging in the junk box and found my old cigarette stinking HiPro PSU with a bent case. "Yes it had been in a PC that I beat to death." Don't worry I'm on Meds now...LOL Brought it home, and took it apart. Spray 9 and water cleaned up the internals well. I did a little fine hammer work to its metal case and its good as new. That PSU has been in the Dell for a year or so now with no problems at all. For a little PIII I'd say it has alot of junk in it. Its a GX150, PIII 1Ghz cpu, 512 megs ram, One added case fan, one after market cpu fan, 128 meg AGP video card with a fan on it, Two DVD Burners, Two IDE/PATA Hard drives, one floppy drive, USB Web Cam, and a USB wireless keyboard /mouse combo.
        I'm going to implement the same cooling solutions that worked up for the PIII on my P4 Dell box. I just need to go up to the shop and get a few odds and ends from a GX150 to make it happen.
        Being that my hearing is blown to shit I can't even hear this P4 Dell run and its only two feet from my face! In the past I had and AMD PC with five cheap fans in the box. I could hear that one! To "normal" people it must have sounded like a Helicopter.
        Last edited by Junk Parts; 12-10-2009, 05:41 AM. Reason: fix
        "It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so."
        Mark Twain

        "I wish to have no connection with any ship that does not sail fast; for I intend to go in harm's way."
        John Paul Jones

        There is a fifth dimension, beyond that which is known to man. It is a dimension as vast as space and as timeless as infinity. It is the middle ground between light and shadow, between science and superstition, and it lies between the pit of man's fears and the summit of his knowledge. This is the dimension of imagination. It is an area which we call the Twilight Zone.
        Rod Serling

        Comment

          #5
          Re: PSU advice requested

          http://www.hypermicro.com/itemdesc.a...002046&eq=&Tp=

          I would spend the extra and go with the delta. I have had this same exact one, sure it's full of ltec, but it is super quiet, runs really cool, and has a pci-e connector (30A 12v rail), no 8pin cpu connector though.

          https://www.badcaps.net/forum/showpo...19&postcount=3

          Theres the internal pics I took.
          Last edited by 370forlife; 12-10-2009, 07:45 AM.

          Comment

            #6
            Re: PSU advice requested

            Krankshaft is right, just replace the fan.

            However, 400W is fine. I run a more power hungry system on a 350W and it's fine. Quality is more important than big wattage numbers.

            The EPS12V connector is almost never needed in a single CPU system. The regular 4 pin CPU connector can already supply 192W. Even with VRM losses you need a really power hungry CPU to go over that.

            Comment

              #7
              Re: PSU advice requested

              Maybe the fan in my AcBel is running at full tilt? Because it's certainly the loudest thing in my PC. I've never had the unit apart though.

              That Delta looks good.

              EDIT: Hey 370, what brand fan is in that Delta?

              Comment

                #8
                Re: PSU advice requested

                I didn't read your post carefully enough (It's a Yate Loon).

                You guys have me thinking now. I'm going to try unplugging all my case fans so that all I hear is the PSU and see what happens. It seemed to me like it was the PSU, but you guys say that yours are dead silent.

                Comment

                  #9
                  Re: PSU advice requested

                  My 550W AcBel's fan is pretty loud, but not anything I "lose" sleep over (though I can sleep right through a nuclear explosion)








                  yay 1500 posts

                  Comment

                    #10
                    Re: PSU advice requested

                    Mine makes a slight whirring noise, but nothing too loud. I've certainly had much louder fans than the Nidec Beta SL in the Acbel.

                    One of the reasons I like these units as well as I do is that they come with a really good fan! I would say that about anything you could put in there would be a downgrade in terms of reliability.

                    A while back, maybe a year and a half ago, someone gave me an IBM PS/2 Model 30 286. The power supply in that thing has a Nidec Beta SL. The PSU is caked in dust, but that fan spun right up and ran quietly. Made the same low whirring sound that all the Acbel API4FS06 PSU's I've used have made.
                    A man convinced against his will is of the same opinion still.

                    Comment

                      #11
                      Re: PSU advice requested

                      I always use nidec when I can, I believe they are easily the highest quality fans out there. Most of their units are rated for 150,000 hours and feature tons of protection features like OVP and some even feature OTP.

                      Some of the server class NMB fans are really nice too.

                      Comment

                        #12
                        Re: PSU advice requested

                        earplugs?
                        sigpic

                        (Insert witty quote here)

                        Comment

                          #13
                          Re: PSU advice requested

                          That's what kills me. I have never before seen a PSU that even comes close to matching the quality of the AcBel. I don't want to get rid of it, solely based on the quality. I know that beast will probably outlive everything else in my machine. I also don't want to change the fan because as acstech said, anything else would be a downgrade.
                          Last edited by weirdlookinguy; 12-10-2009, 11:32 PM.

                          Comment

                            #14
                            Re: PSU advice requested

                            >but it annoys me because it makes sleeping with the computer on very difficult, nearly impossible.

                            i would consider good sleepin more important than pc or anything you can do with it.
                            i solved that issue by buying laptop...that i now usually keep in other room when dloading over p2p etc.

                            as for you, dunno what's your threshold, but mine is that i wanna have piece when i wanna sleep. and psu noise is not piece, afaik. it has those damn deep undertones that bother me.

                            head over to silentpcreview and find quiet seasonic....if you must keep pc in your room on...or find quieter fan for that one...

                            either way, don't lose sleep over pc.

                            Comment

                              #15
                              Re: PSU advice requested

                              I don't lose sleep over it, but it is keeping me from leaving it on overnight. Especially now that my Radeon 4850 is folding (go f@h team 49813!), I would like to run my machine 24/7.

                              Luckily my p2p needs are taken care of by TorrentBox9000, "tb9k", a SFF PIII Compaq machine my friend and I run 24/7 at his house. We slapped a 1TB drive and a SATA card in there this summer and it's been torrenting for us ever since. It just sits in his closet, running headless, P2P-ing it up all day and night. We use the built in m$ remote desktop (better than VNC) and uTorrent WebUI to manage it.
                              Last edited by weirdlookinguy; 12-11-2009, 12:09 AM.

                              Comment

                                #16
                                Re: PSU advice requested

                                Just because one fan is quieter doesn't mean it can't move as much air as a cheaper noisier fan.

                                A quiet fan is a combination of these factors motor design, motor speed, blade design, and vibration dampening.

                                You should be able to look up the original fans model number to find out it's CFM and DB ratings. With that in hand a replacement can be selected.
                                Elements of the past and the future combining to make something not quite as good as either.

                                Comment

                                  #17
                                  Re: PSU advice requested

                                  Right On Krankshaft! You post brings to mind aircraft prop design, and limitations. Some of the fastest prop driven aircraft make a pile of prop noise at speed. This is because the tip of the blades are at or exceeding the speed of sound. Think mini sonic booms. Also the thrust from the prop decreases greatly at this point because of air turbulances at the blades. Now I have no explaination as to why the big twin rotor transport helicopters make so much womping noise. Maybe the angle of attack of the blade has to be greater to keep the heavy thing in the air, and its cavitation that makes the womp womp noises. Can a blade/fan/prop suffer cavitation in air??? Don't know. Where are you PCBONEZ. You know the answer. But yes, put a well designed fan in it and the noise should be gone.
                                  "It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so."
                                  Mark Twain

                                  "I wish to have no connection with any ship that does not sail fast; for I intend to go in harm's way."
                                  John Paul Jones

                                  There is a fifth dimension, beyond that which is known to man. It is a dimension as vast as space and as timeless as infinity. It is the middle ground between light and shadow, between science and superstition, and it lies between the pit of man's fears and the summit of his knowledge. This is the dimension of imagination. It is an area which we call the Twilight Zone.
                                  Rod Serling

                                  Comment

                                    #18
                                    Re: PSU advice requested

                                    Originally posted by Krankshaft
                                    Just because one fan is quieter doesn't mean it can't move as much air as a cheaper noisier fan.
                                    Problem is, theres not a fan that can really match the quality of a nidec. Maybe delta but good luck finding a quiet delta.

                                    Comment

                                      #19
                                      Re: PSU advice requested

                                      Remove fan.
                                      Install this to PSU but out back of the case.
                                      http://cgi.ebay.com/ws/eBayISAPI.dll...m=140360662811
                                      Pull fan wires through.
                                      Install quieter 120mm fan.

                                      Or you could put the PC in another room.
                                      - In fact.
                                      With USB card reader & optical drive & long monitor/keyboard/mouse/speaker cables there is no reason you couldn't run wires through a wall so the PC isn't in same room as the desk.
                                      .
                                      Mann-Made Global Warming.
                                      - We should be more concerned about the Intellectual Climate.
                                      -
                                      Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                                      - Dr Seuss
                                      -
                                      You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                                      -

                                      Comment

                                        #20
                                        Re: PSU advice requested

                                        Sorry, wrong link, try this one instead...
                                        http://cgi.ebay.com/ws/eBayISAPI.dl...em=170406362584
                                        Mann-Made Global Warming.
                                        - We should be more concerned about the Intellectual Climate.
                                        -
                                        Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                                        - Dr Seuss
                                        -
                                        You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                                        -

                                        Comment

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