XPS 8940, check legitimacy of power supply replacement

Question

Good evening.

I'm looking to replace the 350W PSU that came with my original XSP 8940 Desktop with the 500W variant. I'm aware that there's a limited range of PSU units that are compatible with the 8940. The only luck so far is via eBay. I've found this listing for a Y7R0X 500W Chicony that should suit my needs quite well. However, I don't know how to check if it's a legitimate power supply or not. Is there a way to tell?

The label is pictured and has been attached, the manufacturer and P/N both match but I don't know if that's enough. Can you please give me a second opinion?

Kind regards, Luke G

ispalten · Answer

Your question is tough to answer. Why? Because anyone can print a label and put it on something?

However, Dell in the 8940 FAQ does list these are PSU's it installs in the 8940:

PSU
2VD0G 360w Liteon
5K7J8 500w Delta
99TPH 500w Liteon
Y7R0X 500w Chicony

If the unit for sale is the true original, it could be OK, but I don't know how to verify that with a picture of a label.

Grenf1w · Answer

Yes, that was my fear. I don't know how you can verify a power supply without having it physically in front of you. Is there a website or store I can buy it from legitimately? I'd prefer to order from Dell directly or a store I can trust more than an eBay listing.

Kind regards, Luke G

ispalten · Answer

It seems Dell does sell one, https://www.dell.com/en-us/shop/dell-500w-power-supply/apd/5k7j8/parts-batteries-upgrades?tfcid=91049735&dgc=opl&srsltid=AfmBOoqDFP9Xd2IhMiOKfKBcphJlcsQU4SYMjCVd5px9kbVsTbG4RC5vPgY

This product is compatible with the following systems:

OptiPlex 7080 Micro
OptiPlex 7080 Tower
OptiPlex 7080 XE Micro
XPS 8940

Grenf1w · Answer

Thanks you so much for the link, I've tried to order it but it's not appearing in the english store. Just the american one. Is it not available in the uk? Kind regards, Luke

RoHe · Answer

You probably will have to contact Dell spare parts for UK.

Grenf1w · Answer

Good morning, I've tried the link you sent and looked up what parts are for sale for XPS 8940s, but only RAM and SSD upgrades are listed.  Kind regards, Luke G

ispalten · Answer

@Grenf1w​  The link I posted works and shows the 500W PSU. This is a 'en-us' site for parts. Since you are in the UK, possible your ISP blocks part of the URL or redirects you to the Dell site for your location. They may not have that part of sale, or even another PSU? I'd call Dell in the UK and check with them?

RoHe · Answer

The larger PSU may not be available in UK....

stevematt70 · Answer

Did you find a PSU?? I'm also in UK needing a PSU upgrade to upgrade the GPU, surprised my 8940 with a 1660-ti card only has the 360w PSU.. The 1660 is quite lower power 138w max and my i7-10700 CPU is only 65w TDP max.. I'm taking a punt and ordered one off eBay now, similar products from a few sellers from China, waiting delivery..

(edited)

RoHe · Answer

Keep in mind that Dell OEM video cards are typically designed to use less power than retail versions with the exact same model number.

Dell OEM cards may have only one fan, have fewer/different output ports, etc...

XPS Desktops

XPS 8940, check legitimacy of power supply replacement

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