Which CyberPower Desktop Sims 4

@sweetgraace  I wouldn't say I recommend staying at 8 GB—after all, 16 GB is nice to have.  I'm just saying it's not strictly necessary.  Windows is generally better with memory management than macOS, at least if you disable all the apps on startup that would otherwise be running.  (This involves a couple of clicks to get to the right settings and just turning off everything; you can always open the apps you want manually.)  If you're playing Sims 4 and not doing much else at the same time, 8 GB is more than enough.

The other point is that depending on the configuration you want, it might be cheaper to get a system with 8 GB and install another 8 GB yourself.  Paying $40 and clicking a RAM stick into a slot might be more appealing than paying $100 for a system that already has that extra memory installed.  And you can add more RAM whenever you want.

Between Nvidia and AMD graphics cards, the better choice depends on what people want to play.  Nvidia has better driver support: when a new popular game is released, you can expect an optimized driver for it within a week or two as a hotfix, and stable drivers are released about once a month.  With AMD, it's more like once a month and once every three months, respectively.  But if you're only playing Sims 4, you won't care about that.

AMD cards are cheaper, or at least the ones you'd need to run Sims 4 on ultra settings are cheaper; the newest generation is a bit more expensive.  If you want to futureproof your computer a bit, you could pay significantly more for a better card than Sims 4 would ever need.  But the nice thing about getting quality components overall is that you could upgrade the graphics card in a few years without having to change anything else.  So if Sims 5 is more demanding than Sims 4, or a new game catches your eye, you wouldn't need an entirely new computer.  On the other hand, you wouldn't need to pay now for graphics power you'll only need later, and you wouldn't need to correctly guess how much power you'd need either, or overpay to be on the safe side.

The motherboards on the CyberpowerPC site are all of at least good quality.  The company doesn't sell the cheap low-end models that don't get BIOS updates and turn out not to support newer hardware.  The question becomes whether you want a board that's good enough, or one that has extra features you might want in a few years.

There are certainly plenty of other companies that make good gaming computers in the price range you're considering.  You could also get a Cyberpower system from Amazon or Best Buy, if you're more comfortable with their return policies.  The difference is you wouldn't be able to choose exactly the configuration you wanted; you'd have to take what was offered.  I can look for other options, but it would be easier if I knew exactly what you wanted, for example 8 vs. 16 GB RAM, and what category of graphics card.

By the way, I looked at the site again for someone else and saw yet another configuration that might work for you.  It's $750 (with free shipping) for 8 GB RAM right now, or $790 for 16 GB, because the free giveaway isn't necessarily something you'd want.  But you could buy on a day when a memory upgrade to 16 GB is the free offer, which I think happens once or twice a week.

https://www.cyberpowerpc.com/system/Work-From-Home-Special-II