Power Supply Upgrade Suggestions

[Okaloosaman]

Hello Community! Does anyone suggestion for a power supply upgrade for my HP Pavilion 590-p0053w?  I have seen several different power supplies mentioned in other threads. Does anyone know if this part fits? 500w Power Supply .  

Thanks in advance,

- J

[NonSequitur777]

Dear Okaloosaman,

Right off the bat, there is one HP-approved PSU upgrade available for your rig, the 400 watt HP p/n: L04618-800.

This discussion came up before in this Forum, such as here: https://h30434.www3.hp.com/t5/Desktop-Hardware-and-Upgrade-Questions/Power-Supply-Upgrade-for-an-HP-... and here: https://h30434.www3.hp.com/t5/Desktop-Hardware-and-Upgrade-Questions/PSU-amp-GPU-Upgrade-Question/td...

There are other non-orthodox standard ATX PSU options available, and I am looking into it right now for you.

[EDIT:] DISCLAIMER: Okaloosaman, using the following powering method to safely daisy-chain an additional external ATX PSU to power your GPU is NOT approved or endorsed by HP.  If you were to use this method, it would void your PC warranty and you will assume all risks and/or damages that may result from applying this method to your rig.

Moving on, the best solution for your PC, in my opinion, is as simple as it is elegant.  You can purchase a $5 "ATX 24Pin to SATA Dual PSU Power Supply Sync Starter Extender Cable Card", connect the adapter's 24-pin connector to an external ATX PSU and connect the adapter's SATA connection to one of your motherboards/original HP PSU SATA power connectors.  Now use the PCIe 6/8-pin power connector(s) from the second (ATX) PSU to power your GPU.

Btw, I highlighted the SATA connection, because you can also buy these power-adapters with a 4-pin MOLEX connector, but this is less convenient in my opinion.

So, how does this work? -When you turn on your PC, the master HP power supply (the one plugged into your motherboard) is turned on, it immediately powers the adapter's SATA connector and in-turn, the adapter activates its relay to "pull" the PS_ON pin on the second ATX PSU to "ground" (turning it on).

Likewise, when you power down your rig, the adapter turns the second PSU off.

Please note: to avoid motherboard power overload issues, the secondary ("slave") ATX PSU should ONLY be used to power a GPU.

Easy-peasy.  For me at least, this method has been working wonderful without any issues whatsoever.

Kind Regards,

NonSequitur777