[NAME] the deal with non-Alienware Dells is that the motherboard doesn't support XMP, so it runs the RAM at the stock DDR4 voltage of 1.2V. Any DIMM that's advertised at a certain speed and 1.35V will only attain that speed when supplied 1.35V,  which the Dell mb can't do. So the RAM will run lower MHZ (even lower than the 2933 supported by your 10th gen CPU). I've seen a lot of people reporting that they bought 3200 1.35V and found it to run at 2666 or even 2400. That being said, you can find 2933 1.2V Dimms out there, but honestly the price Dell quoted you is not bad at all. From what I could find on a quick search through newegg.ca, amazon.ca and such, a 16GB stick at 1.2V is above $130 CAD.
I'm looking for opinions on what the best RAM update option is for my recently purchased received my G5 5000 (arrived 2 weeks ago) When I ordered online I didn't notice that the default selection was 1x16GB and not 2x8GB. Contacted Dell but I wasn't able to change order only cancel and re-order so I just went ahead with order so it wouldn't be further delayed. I've upgraded the stock CPU heatsink/cooler to a Cooler Master Hyper T2 (which I found for $25 CAD) and some internal case fans so the CPU thermal throttle issue has been solved but I want to upgrade the RAM so I at least have dual channel. I will be using the Dell G5 for day to day stuff, gaming, video editing (home movies) and photography editing (photoshop/lightroom). Option 1 - buy another stick of 16GB DDR4 3200 from Dell for $121.99 CAD. Looked else where online and couldn't find a better deal for the same RAM. Will have 32GB total running at 2933 Mhz. Option 2 - move my 16GB from my AMD PC. Corsair Vengeance LPX 16GB (2x8GB) DDR4-3000 CL15. Found some used RAM (FB Marketplace) to put in my AMD PC Corsair Vengeance LPX 16GB (2x8GB) DDR-3600 CL18 for about $80. Option 3 - buy a new set of 8GBx2 DDR4 RAM for Dell G5 ~$120 CAD Option 4 - other
G5 5000 Single Channel Memory/RAM Upgrade to Dual Channel?