Ram Upgrade Conflicting Information on threads XC-1660G -UW93

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Albert1660
Albert1660 Member Posts: 2 New User

XC-1660G -UW93 RAM I have searched for a long time and the information is very conflicting especially when searching online. To upgrade my Ram I have two Dimm slots. A few posts said each slot is good for 32 64 total but in fact the acer spec sheet says 32GB total 16 Each I am okay with this as I only need 16 or 32GB max anyway. I cannot find the correct memory to swap out as there are many different options.

I am pretty sure based off the research here that I need DDR4 2933 but there are two variants

On New egg website there is a variant for DDR4 2933 (PC4 23466)DDR4 2933 (PC4 23400)

Microcenter has DDR4 3200 PC4-25600 as its lowest option.

Crucial.com has 2400 then jumps to 3200 says will work with my XC1660G but I don't trust it as it was just a scan

What are my options here ? What works what doesn't I don't want to get something incompatible or that can bottleneck or lock up the desktop

There's also DDR4 2666 is that too slow even though ill have possibly quadruple the RAM Will it work? Why are the options so limited?

Any help would be great

@billsey @ttttt Seems to be the ones to ask

Answers

  • Albert1660
    Albert1660 Member Posts: 2 New User

    Also EEC and Unregistered ? What are those about ?

  • billsey
    billsey ACE Posts: 36,312 Trailblazer

    ECC and Registered are both used in servers and typically not in desktops. You want unregistered, non ECC, memory with a JEDEC profile of either 2933 or 3200 MT/s. Your model was released in 2021, at the height of the COVID pandemic, and there were memory shortages then. Many of these models were shipped with 3200 MT/s memory instead of 2933 due to those shortages. Either the PC4-23400 or the PC4-25600 will work fine, just stay away from memory that is XMP enabled, since they are often offered as "3200MHz" or higher, even though their JEDEC profile is either 2133 or 2400. You can use 4, 8, 16 or 32GB modules in your system, to a maximum of 64GB of memory. I'd suggest you get two 16GB modules rather than one 32GB, so you can run them in dual channel mode for better performance.

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