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- Upgrade psu in hp gaming pc for 3080/3070

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11-28-2020 05:42 PM
@ARandomPcUser , welcome to the forum.
The motherboard in your computer is HP proprietary. It has a 4-pin power connector instead of a standard 24-pin ATX power connector. Therefore, you will have to buy an upgraded PSU from HP. Here is a Power Supply Cross-Reference Chart to show you what is available: https://h30434.www3.hp.com/t5/Desktop-Knowledge-Base/Power-Supply-Cross-Reference-for-specific-model...
Your model series (690) shows a 310W, 400W and a 500W (L05757-800) that are compatible with the motherboard. The 500W PSU has a PCIe 6+2 power connector. However, I don't believe that this is enough power for the RTX 3070 video cards. The specifications from nVidia show the minimum power requirement is 650W: https://www.nvidia.com/en-us/geforce/graphics-cards/30-series/rtx-3070/?ncid=afm-chs-44270&ranMID=44...
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