Can I replace my L08261-004 PSU with L04618-800?

[NathanielV]

I bought a new graphics card for my Pavilion 595 P0074, and it needs a new power supply.  I understand you can only use proprietary PSU's from HP, but I wanted to know if I can upgrade from the L08261-004 PSU to the L04618-800.  Does it have the right connectors?

If not, is there a way I can upgrade the PSU to have at least 350W?  Or am I better off getting an new computer?

[VikramTheGreat]

Hi @NathanielV,

Welcome to the HP Support Community!

We noticed that this thread hasn't had any updates in a while since your original post; while this is rare, we didn't want this post to remain unanswered, so here's the solution to your query. We hope it helps you and everyone viewing this post 😊

Thanks for your patience! Here's what I found regarding your HP Pavilion 595-p0074 and the PSU upgrade:

Yes, you can upgrade from the L08261-004 (180W) to the L04618-800 (310W) power supply — but with important conditions:

• Both are proprietary HP PSUs, designed for compact HP desktops.
• The L04618-800 is used in higher-end HP Pavilion and Envy models and includes the 6-pin PCIe connector needed for many entry-level to mid-range GPUs.
• Form factor and connector compatibility are generally maintained across HP’s proprietary PSU line, but you must confirm:
• The physical dimensions fit your case
• The motherboard connector (typically 6-pin or 10-pin proprietary HP) matches
• The GPU connector (6-pin or 8-pin PCIe) is present

Please mark this post as “Accepted Solution” if the issue is resolved, and if you feel this reply was helpful, click “Yes”.

Thanks for being part of the HP Community!

VikramTheGreat

HP Support