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Intel D975XBX Cap Mod Questions

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    #41
    Re: Intel D975XBX Cap Mod Questions

    I'm not into the OC or MOD thing but this is a pioneering effort, even if it is , I've got something you don't, bragging rights.
    If I found the board was more stable, lasted longer, and would never smell like cod liver, I would do this.
    If I didn't I wouldn't.
    Jim

    Comment


      #42
      Re: Intel D975XBX Cap Mod Questions

      that board should last a long time as it is. anyway yes i agree tweaking the hardware is fun and cool. thing is that i dont believe it is necessary to go for full polymer on a board. i wonder if it is better to have large capacitance on input using something like MCZ and then use SEPC on output. does that make sense?

      much cooler to show the other guy that you can achieve the same overclock with less expense.

      thing is that knowing electronics and using a scope to optimise the board using cap mods and adding small smt caps etc, showing how the mods improve the overclock periodically, that is the coolest but few do that.

      anyway that is a hella lot of soldering. i would certainly not do all those caps in one session.

      on the matter of the gigabyte GA-965P-DS3 full polymer board which is supposed to be really good, lol PC PRO magazine did not even notice it has full polymer and rated the Foxconn higher...lol wankers.
      capacitor lab yachtmati techmati

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        #43
        Re: Intel D975XBX Cap Mod Questions

        So basically you guys are saying to use a combination of caps?

        Chemicon PSA
        Sanyo OSCON SEP
        and maybe Rubycon MCZ?

        I will probably re-cap my rev 302 board first. If successful, then maybe I will attempt the rev 304 board.

        Just curious, but how much would it cost for this do be done by an experienced pro? (like one of you)

        I still need to buy all the tools you guys list in the FAQ.

        Comment


          #44
          Re: Intel D975XBX Cap Mod Questions

          you can read the specs of caps in the following thread

          https://www.badcaps.net/forum/showthread.php?t=2280

          lower esr and higher ripple is better. of course it depends on what is available not what the best caps are.

          like i said that is a whole bunch of soldering and you would need some practice first. newer boards are not so simple as the older p3 types, lots of ground planes need a good soldering iron in hot and fast or screw the board with long heating by lifting a trace or damaging a thru hole.
          capacitor lab yachtmati techmati

          Comment


            #45
            Re: Intel D975XBX Cap Mod Questions

            Originally posted by willawake

            on the matter of the gigabyte GA-965P-DS3 full polymer board which is supposed to be really good, lol PC PRO magazine did not even notice it has full polymer and rated the Foxconn higher...lol wankers.
            iirc foxconn is the oem for intel.
            had an intel board from a dell laying next to a foxconn.
            identical.
            except the intel dell board had fpcaps rather than nichicon hm.

            Comment


              #46
              Re: Intel D975XBX Cap Mod Questions

              yes that is correct. the foxconn however had inferior caps, the abit had all MCZ. the magazine chose the foxconn on the basis of price and features.
              capacitor lab yachtmati techmati

              Comment


                #47
                Re: Intel D975XBX Cap Mod Questions

                LOL, I just made a list of caps I would need if I went with all liquid caps. The Solid cap list seems like it is going to take alot of research...ugh

                (03 total) Rubycon MCZ 6.3V, 3300uF, 9ESR, 3230 ripple
                (03 total) Rubycon MCZ 10V, 1000uF, 18ESR, 1850 ripple
                (04 total) Rubycon MCZ 16V, 470uF, 21ESR, 1340 ripple

                (19 total) Rubycon ZLG 10V, 470uF, ?ESR, 1000 ripple
                (04 total) Rubycon ZLG 16V, 1200uF, ?ESR, 2360 ripple
                (03 total) Rubycon ZLG 25V, 22uF, ?ESR, 350 ripple
                (01 total) Rubycon ZLG 25V, 33uF, ?ESR, 480 ripple
                (16 total) Rubycon ZLG 25V, 100uF, ?ESR, 760 ripple
                (01 total) Rubycon ZLG 25V, 220uF, ?ESR, 1000 ripple

                (05 total) Rubycon ZLH 6.3V, 220uF, ?ESR, 345 ripple

                I'm pretty sure the solid caps I have (Vcore) are Fujitsu FPCAP RE Series L8 Type. They are 2.5V, 560uF, 6ESR & 4400 ripple. I would keep those. Only thing I cannot figure out is the difference between the "611", "612" & "613" markings. Again, here are the markings (motherboard label on the left and cap label on the right):

                C2D1 = 612 561 2.5V
                C2D7 = 613 561 2.5V
                C2D9 = 613 561 2.5V
                C2E1 = 611 561 2.5V
                C2C1 = 613 561 2.5V
                C2C2 = 612 561 2.5V
                C3C1 = 613 561 2.5V
                C3C2 = 612 561 2.5V
                C3C3 = 613 561 2.5V

                Comment


                  #48
                  Re: Intel D975XBX Cap Mod Questions

                  the difference between the "611", "612" & "613" markings
                  date of manufacture codes

                  be careful that the new caps you will put on the board are not WORSE specs than the caps you already have there.
                  capacitor lab yachtmati techmati

                  Comment


                    #49
                    Re: Intel D975XBX Cap Mod Questions

                    Which of these solid Vcore caps would be better?

                    Nippon Chemicon NPCAP PSC series: 2.5V, 560uF, 7ESR & 6100 ripple.
                    Nichicon LF series: 2.5V, 560uF, 6ESR & 4800 ripple
                    Fujitsu FPCAP RE Series L8 Type : 2.5V, 560uF, 6ESR & 4400 ripple.
                    Sanyo OSCON SEPC: 2.5V, 560uF, 8ESR & 4700 ripple.

                    I think low ESR and high ripple are best right?

                    Comment


                      #50
                      Re: Intel D975XBX Cap Mod Questions

                      I think low ESR and high ripple are best right?
                      yup

                      they are all pretty close though.
                      capacitor lab yachtmati techmati

                      Comment


                        #51
                        Re: Intel D975XBX Cap Mod Questions

                        Nippon Chemicon NPCAP PSC series: 2.5V, 560uF, 7ESR & 6100 ripple.
                        Nichicon LF series: 2.5V, 560uF, 6ESR & 4800 ripple

                        Looks like these would be the top 2 then....I would think the 7ESR & 6100 ripple would be #1 right?

                        Comment


                          #52
                          Re: Intel D975XBX Cap Mod Questions

                          Okay, how does this look?

                          Liquid caps:

                          (03 total) Rubycon MCZ 6.3V, 3300uF, 9ESR, 3230 ripple
                          (04 total) Rubycon ZLG 16V, 1200uF, ?ESR, 2360 ripple

                          Solid caps:

                          (09 total) Nippon ChemiCon NPCAP-PSC Series 2.5V, 560uF, 7ESR, 6100 ripple.
                          (03 total) Nippon ChemiCon NPCAP-PSC Series 10V, 680uF, 7ESR, 6100 ripple.
                          (19 total) Nichicon LF Series 10V, 270uF, 8ESR, 4900 ripple.
                          (04 total) Nichicon LF Series 16V, 270uF, 9ESR, 4800 ripple.

                          Not replacing:

                          (03 total) 25V, 22uF
                          (01 total) 25V, 33uF
                          (16 total) 25V, 100uF
                          (01 total) 25V, 220uF
                          (05 total) 6.3V, 220uF

                          Guess the next task would be to find the make/model/complete stats of my current caps to make sure this is really worth it. =)

                          Comment


                            #53
                            Re: Intel D975XBX Cap Mod Questions

                            The ZLG 1200u 16v ESR =13

                            The challenge now is to get hold of the capacitors you have specified. We would like feedback on where you get them. Or do you need some help with this?
                            Gigabyte EP45-DS3L Ultra Reliable (Power saver)
                            Intel E8400 (3000Mhz) Bios temps. 4096Mb 800Mhz DDR2 Corsair XMS2 4-4-4-12
                            160Gb WD SATAII Server grade
                            Nvidia 8500GT 256Mb
                            160Gb WD eSATAII Server grade for backup.
                            Samsung 18x DVD writer
                            Pioneer 16x DVD writer + 6x Dual layer
                            33 way card reader
                            Windows XP Pro SP3
                            Thermaltake Matrix case with 430W Silent Power
                            17" Benq FP737s LCD monitor
                            HP Officejet Pro K5300 with refillable tanks

                            Comment


                              #54
                              Re: Intel D975XBX Cap Mod Questions

                              I will probably need help eventually to find these caps. I will contact the site owner when I am ready first

                              So I have noticed you guys mention input/ouput related caps. How do I tell the difference? Also, how would I go about finding info on what each cap is responsible for? (i.e. caps nearest the CPU are most likely Vcore responsible, etc.)

                              Comment


                                #55
                                Re: Intel D975XBX Cap Mod Questions

                                Zorlac. I am guessing re. input and output comments. This usually refers to the caps involved with the VRM ( responsible for the regulated CPU voltage). The output caps are typically close to the CPU and the VRM input caps are are seperated from them by the switching MOSFETS and the inductors (with a few turns of thick copper wire).


                                The picture above shows the six output caps in the foregroundand the four input caps behind.
                                Gigabyte EP45-DS3L Ultra Reliable (Power saver)
                                Intel E8400 (3000Mhz) Bios temps. 4096Mb 800Mhz DDR2 Corsair XMS2 4-4-4-12
                                160Gb WD SATAII Server grade
                                Nvidia 8500GT 256Mb
                                160Gb WD eSATAII Server grade for backup.
                                Samsung 18x DVD writer
                                Pioneer 16x DVD writer + 6x Dual layer
                                33 way card reader
                                Windows XP Pro SP3
                                Thermaltake Matrix case with 430W Silent Power
                                17" Benq FP737s LCD monitor
                                HP Officejet Pro K5300 with refillable tanks

                                Comment


                                  #56
                                  Re: Intel D975XBX Cap Mod Questions

                                  Originally posted by Zorlac
                                  So I have noticed you guys mention input/ouput related caps. How do I tell the difference?
                                  Not my prettiest piece of Photoshop work, but I hope it helps

                                  Attached Files

                                  Comment


                                    #57
                                    Re: Intel D975XBX Cap Mod Questions

                                    Originally posted by tiresias
                                    Not my prettiest piece of Photoshop work, but I hope it helps

                                    so i have to keep the board away from upside down trashcans?
                                    ;-)

                                    Comment


                                      #58
                                      Re: Intel D975XBX Cap Mod Questions

                                      Massive thread necro here!

                                      I'm still using my old Intel D975XBX 3.04 board - no issues with caps so I see no need to replace them. I wonder if the OP ever did it?

                                      Comment

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