PSU & GPU Upgrade Question

[hotdogwarrior]

Greetings! I've been searching around the forums looking for a similar question, but I've seen numerous answer so I figured I'd post my questions here.

I just got a HP Pavilion Desktop 590-p0081c last week and I have already added a SSD to the board. I plan on adding a GTX 1660 down the line, but I also understand that I first need to upgrade my power supply. I have a modular PSU picked out, but I was wondering: Does this particular case have enough space to accommodate upgrading to a standard ATX PSU? Will it also comfortably house an upgraded GPU? 

Thank you in advance.

[wb2001]

@hotdogwarrior,

Did you look at the existing power cabling for the motherboard?  The 3 motherboard power leads from the existing PSU are not ATX.   That computer has a LINCS motherboard.  It has a proprietary PSU.  It is NOT an ATX PSU.  So, what ever modular PSU you picked out will not work. 

[hotdogwarrior]

@Wb2001,

Oh, you're right. I didn't realize that these were proprietary PSUs... Is there any way to upgrade it to something a little beefier to upgrade the graphics card?

Thank you for the quick response, btw!

[wb2001 · Accepted solution]

@hotdogwarrior 

Thank you for being so kind.  I was a slight testy that day.

I have endeavored to work up an Excel file that has a cross-reference to the following.

HP series models 590, 595, 690, 790 and the 795 all share the same 3 motherboard connectors, the (2) 4x4 and an inline 7 pin (only 3 pins used). 

Your 590-p0081c LINCS motherboard has 310W PSU with 2 different part numbers,  ie L03980-800 or L64961-800.

The 590-p0024 SUNFLOWER motherboard has a 180W L08660-800.  It has been tested with the 400W L04618-800 and GTX 1060.

But get these SUNFLOWER motherboard models:

690 - 0020 comes with the 400W

690 - 067c comes with the 310W that is found in your 590-p0081c

 Your probably now confused, but read on, it gets interesting.

Now to your question:

There is a 400W and 500W PSU with the same connectors, but the problem is as follows.

1) I have been waiting 2 months to get verification that it is a cross-reference.

2) The chassis rear plate on different series computers does not match-up with the 400W or 500W. It only catches 1 screw hole on the PSU.

3) While the 500W has been used to replace the 310W,  the PSU fan (rear mounted) was partially blocked.  Modification of the chassis plate would involve adding another screw hole and cutting away some of the chassis plate to allow the fan to fully exhaust. see video shown here https://www.youtube.com/watch?v=uZONvASopvc

4) Do not have is a picture of your 590-p0081c chassis rear plate.  Is it the same as the video (HP 690-0010)

5) Because of number 1 and 3, I can not recommend this procedure.

I have researched this data, and am responsible.

[hotdogwarrior]

This is such a good, clean spreadsheet! Thank you very much for making it! Also, your explanation was very clear and concise and I understand my machine a lot more now. I was beginning to lose hope because I felt like I was being taken in 30-different directions based on different computer model numbers having different chassis. I also saw that a bunch of people seem confused by HP's proprietary and you were the one mostly answering so for that I cannot thank you enough.

At this point, I may do some small upgrades on it, but I'm more than likely just going to coast with it while I save up to do a "from the ground up" build.

Once again, thank you very much and definitely keep that sheet handy as I'm sure there will be new threads for every config of machine!

[wb2001]

@hotdogwarrior 

Thank you for your kind words of encouragement.  I will add models and changes.

As others chime in to ask about these models, and "dare-devil" enthusiast make known their individual PSU changes, I shall add to the list.