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May 22nd, 2023 04:00
XPS 8940, upgrade to Antec Neo Eco 600w PSU
Hello,
My video card went out and I bought an RX 6700XT. The out of the box PSU with the XPS 8940 doesn't seem to have the power required to use this video card. I have an Antec Neo Eco 600w sitting around I thought I would use to replace the one in my XPS 8940.
I noticed however, that the Dell motherboard requires 2 4-pin and 1 6-pin connector to power it. The power supply does have 2 4 pin and if I add an adapter it will give me the 6 pin. Will this work? Also, since there is not a spot for the 24 pin connector off the PSU I just leave that off right?
I understand the case will likely not close but I am ok with that even if the power supply has to sit outside the machine.
Hoping someone else has possibly done this or can comment if this will work.
Thanks.
Chino de Oro
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May 22nd, 2023 05:00
The XPS 8940 motherboard doesn't use 24 pin for power, only the 6 pin. You can get a 24 pin to 6 pin adapter to connect your Antec PSU to the motherboard.
Preferably, many users opted for an OEM 500w PSU. These are the OEM power supply that will work with your system, Dell part number Y7R0X 500W (made by Chicony), 99TPH 500W (made by Liteon), and 5K7J8 500W (made by Delta).
bline22
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May 22nd, 2023 06:00
Thanks I didn't realize that adapter existed. So I would use this adapter and then the 2 4-pin connectors and I should be off and running right?
Thanks for the suggestions on the OEM 500w PSU's. I didn't realize they had those.
Chino de Oro
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May 22nd, 2023 06:00
In addition to connecting the 6 pin (from adapter), you will need to connect a 4 pin from Antec PSU (4+4) to power the CPU. From the provided link, scroll down to product review and you will find review from customer confirming that it was working for xps 8940.
redxps630
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May 22nd, 2023 07:00
concur w chino. when you use non-Dell ATX psu to power XPS 8940, you adapt the 24 pin ATX to a Dell proprietary (12VO) 6 pin connector for motherboard. You could continue to use the motherboard sata power connectors for drives, or use the sata connector directly from psu.
user reports you would not be able to shut down non-Dell psu via Windows shut down. You will need to manually switch off the psu. That is one small draw back. The other draw back is cable management.