Inspiron 3650, upgrade Power Supply Unit

Try this previous post on the forum. It should help out.

https://www.dell.com/community/Desktops-General-Read-Only/GPU-PSU-UPGRADE-IN-AN-INSPIRON-3650/td-p/5134870

And this for a solution.

https://www.dell.com/community/Inspiron-Desktops/Inspiron-3650-PSU-upgrade/td-p/5825410

There are no internal upgrades.

The ugly truth is you remove the internal supply and run wires thru the hole and have the PSU outside the case. You also need MODDIY 24 pin to 8 pin adapter cable.

http://www.moddiy.com/products/Dell-OptiPlex-T1700-PSU-Main-Power-24%252dPin-to-8%252dPin-Adapter-Cable-%2830cm%29.html

You cant upgrade a stock power supply because the motherboard uses a proprietary 8 pin connector.

Moddiy makes a 24 pin to 8 pin adapter.

Regular size psu must sit outside the case.

https://www.youtube.com/watch?v=SCQTj1ei3Ew

Here's your answer. I did a full upgrade on the 3650 some time ago. 600 watt internal power supply and gtx 1080ti.

https://www.dell.com/community/Inspiron-Desktops/Inspiron-3650-upgrading-cooling-capacity/m-p/6233021#M9373

I posted pics and links to the parts. I hope this helps.

ebay 260W PSU DELL

Definitely available.

Re: I posted pics and links to the parts.

interesting mod of 3650.  can you explain how one can remove dell cpu socket backplate glued to motherboard backside before one can install the low profile cooler reeven brontes lp cooler?

also what is the process of modding case top panel to add a custom fan?

I installed mine inside, 500w mod.

Apetia SFX 500w works with adapter