Power supply for Inspiron 3668 i5-7400

The only way you're going to be able to put that capacity power supply in that system is to leave the actual power supply box outside the system and run the cables inside.

You will also most likely need an adapter to use a standard power supply with the mainboard in the Dell, which very likely uses an 8-pin connector.

www.amazon.com/.../B01A210HKO

Actually I managed to find a few power supplies that would fit (e.g. www.outletpc.com/kx6461-sdgr-tfx350-solid-gear-350w-power-supply.html ) but the problem is they all have only 1 6 pin connector but 2 are needed (1 is needed for the motherboard and 1 is needed for the video card). Is it possible to use a adapter, such as ATX 20+4 Pin to 6 pin?

No, it's not - you need a power supply that has the required connectors.  If this system is new enough to be within 30 days of shipment, you'd be better off returning it for a higher-end model -- this one is designed as a computing appliance, not a  high performance system.  You'd be better served by an XPS 8920 or Alienware system.

Hi,fiddlers25

You can have a look at this store http://www.parts-dell.cc/,they sell most power supply,but i don't know whether they can get what you want.

Hi OP,

I too just purchased this 3668 with i5 and Nvidia display card. How do you know the wattage of the stock PSU? I couldn't find it on the service label, only marked as 110/240V. Sorry for a bit off-topic.

By the way I think the machine is a very good deal.

on the parts list on the dell website it says

VX0HP : Module,Chassis,Pwa Integrated, Non Pfc,240W,3668

i also spoke with Dell tech support and they confirmed it. They also stated that the power supply cannot be upgraded above 240 watts, and the 6 pin power connector on the motherboard is not PCIe,  so I had to return this PC

Did your computer had a 240w psu??

yes

The supply is SMALLER THAN TFX and WILL NOT FIT a TFX 350.

No its not possible.

Request Denied.