Replacing capacitors in Evga PSU

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  • competition
    New Member
    • Nov 2025
    • 4
    • Bulgaria

    #1

    Replacing capacitors in Evga PSU

    I have Evga G2 1300w and I want to replace all the electrolytic capacitors because PSU is already 12+ years old and I want to give it more life before any capacitor does damage. There are no blown capacitors, but I want to protect myself by replacing them with new ones as a precaution. And now comes the main problem. I have 5 pieces of Bulk (I think they are KZE) 16v3300uf with dimensions 10/35/5, but I can't find them in that size, only 12.5/35/5.I have one KY 16v1000uf 8.5/19/3.5, one KY 16v220uf I think it is 6/13/3.5 but it is in holes of pitch 5 I have 4 pieces of KZE 16v2200uf with dimensions 10/25/5, but they are only located at 12.5 diameter. I have one KY 16v1000uf 8.5/19/3.5, one KY 16v220uf I think it is 6/13/3.5 but it is in holes of pitch 5 and they are next to the secondary circuit for 5v and 3.3.I have two KMG 50v10uf, one of which I think is at the 5VSB input (it stands right next to the two SNAP-in KMR 400v680uf) ), and the other under the 5VSB transformer with dimensions 5/13/3.5 and again raised to fit in pitch 5 on the board. I have another KMQ 50v68uf (I think it acts as a reservoir for the IC chip) with dimensions 7/13/3.5 and it is also raised for pitch 5.I have one KMG 50v4.7uf with dimensions 5/11 or 12/2.5, which is also raised and fits into pitch 5 on the board, I think this one is for the logic board. One KMG 16v100uf on the fan board with dimensions 5/11 or 12/2.5, which is also raised for pitch 3.5. And finally there are 11 Capxon SY 16v330uf for filtration to the connectors on the output board.The problem is that the large 3300uf and 2200uf are not available in the sizes that are in the power supply, but are only available at 12.5, as well as other brands Rubycon and Nichicon, some of their low impedance, high ripple series are also available at 12.5. KMG also seems to be no longer produced, and to be honest, I want to put ones with a long life, even though they are for unpretentious places. I also can't find this KMQ 50V68uf,but for it as far as I understand, I can use 50v100uf but I wish it had a long life too.I've been reading and comparing with other brands and series for a week, but I've fallen down the rabbit hole and need your professional help.I'm an electronics enthusiast and I'm still learning. My soldering skills are average, but I think if I'm careful I'll be able to handle it without any damage.
  • Justin_D33
    Justin
    • Sep 2025
    • 16
    • United States

    #2
    I don't know much about EVGA, but I know for damn sure you should avoid modern Chemi-Con. They're not Japanese anymore. They're actually owned by KEMET now, which is a European company.

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    • Justin_D33
      Justin
      • Sep 2025
      • 16
      • United States

      #3
      If I were you and recapping this unit, I would go for Rubycon ZLH/ZLJ, Nichicon HE, or Panasonic FR/FM, and for the primaries: Panasonic TS-ED/TS-HA, Nichicon GU/LGU, or Rubycon MXR.

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      • competition
        New Member
        • Nov 2025
        • 4
        • Bulgaria

        #4
        I search and choose this:
        1 - KMQ50v68uf(5VSB) ---> UPV1H680MGD1TA
        2 pcs - KMG50v10uf (5VSB in/out)---> EEU-FR1H100B
        1 - KMG50v4,7uf (logic) ---> EKMG500ETC4R7ME11D(the same or should I choose another one with a longer life?)
        1 - KMG or KMQ(I don't see the series) 16v100uf(Fan board) ---> ELE-160ELL101MF11D
        1 - KY16v1000uf ---> EEU-FR1C102LJ
        1 - KY16v220uf(It's very close to fan board) ---> UHV1C221MED1TA
        4 pcs - KZE16v2200uf(scattered around the fan board, 5V and 3.3V and back module board) ---> EEU-FS1C222LB
        5 pcs - (haven't name series,4 in parallel for 12v rail and one next to the logic board)16v3300uf ---> EKZN160ELL332MK30S
        11 pcs - Capxon Sy16v330uf(filter with polymers PS351 16v330u on module board) ---> EEU-FM1C331B
        I chose it for durability, Low ESR and higher Ripple at 120Hz and 100Khz than the original ones, which are soldered.If I have chosen an inappropriate one somewhere, can you give me a replacement? And can I mix different brands, as is the case in my case, or do I have to choose only one brand in all electrical circuits?
        Thanks in advance.

        Originally posted by Justin_D33
        I don't know much about EVGA, but I know for damn sure you should avoid modern Chemi-Con. They're not Japanese anymore. They're actually owned by KEMET now, which is a European company.
        Chemi‑Con ≠ KEMET. They are completely separate companies.Chemi‑Con is a Japanese firm, and its capacitors continue to be manufactured mainly in Japan, although there are other plants for certain series.KEMET is part of Yageo (Taiwan), but has no connection with Chemi‑Con.this is what chatGPT5 says. I'm not arguing, I just searched for information and this came up

        Edit:I forgot to say that these 16v3300uf are not available in sizes 10/35 with Low ESR and High Ripple. The ones chosen are 12.5 and I will have to lift them because there is no space and there are ferrite inductors and jumpers around that prevent direct installation due to the thickness of 12.5. I think I will be able to assemble them by lifting them and slightly shifting them to the sides.

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        • Justin_D33
          Justin
          • Sep 2025
          • 16
          • United States

          #5
          Originally posted by competition
          its capacitors continue to be manufactured mainly in Japan, although there are other plants for certain series.
          I already knew they're Japanese-made. I was just pointing this out.

          Comment

          • Justin_D33
            Justin
            • Sep 2025
            • 16
            • United States

            #6
            Originally posted by competition
            I chose it for durability, Low ESR and higher Ripple at 120Hz and 100Khz than the original ones, which are soldered.If I have chosen an inappropriate one somewhere, can you give me a replacement? And can I mix different brands, as is the case in my case, or do I have to choose only one brand in all electrical circuits?
            Thanks in advance.
            Yes, you can mix-and-match brands. Doesn't matter if they're Panasonics, Nichicon, NCC, Rubycon, or whatever else, you can mix-and-match brands. For those CapXon polymers, I would have gone for a similar series (Nichicon FP, etc.), but Panasonic FM works too. Also, Chemi-Con KMG is general-purpose, not low-ESR. I would have gone for something like Panasonic FS there.

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            • competition
              New Member
              • Nov 2025
              • 4
              • Bulgaria

              #7
              For KMG50v4.7uf(logic) i choose EEU-FR1H4R7B.Thank you Justin

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              • Justin_D33
                Justin
                • Sep 2025
                • 16
                • United States

                #8
                Also, I forgot to mention, but Nichicon UPV is also general-purpose. Chemi-Con KMQ is low-ESR, so I wouldn't replace it with that. Get something like Nichicon HE, Chemi-Con KZE, or Panasonic FR.

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                • Justin_D33
                  Justin
                  • Sep 2025
                  • 16
                  • United States

                  #9
                  Chemi-Con LE and Nichicon UHV is also general purpose. Don't get those.

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