(earlier) Summary: disappointed in the limits on RAM and internal drive installation, and inability to upgrade processor. That said, I do think this computer could work for someone who isn't a serious gamer or doesn't do serious high-end graphics or video editing.
At first I was very pleased with this computer. Its processor (i5) and graphics card (Nvidia GeForce GT 730) are significant improvements over the six year old several times upgraded computer I had built. The disappointment set in as i became more familiar with the computer innards. I added a SSD only to find Dell doesn't provide a way to secure that inside the case. Unlike my older computer which had 3.5 inch drive bays and to which i could install a 2.5 inch SSD with an adapter, this Dell has a wider drive bay with a special adapter to fit the space. That adapter will hold one 3.5 inch drive, or 2 2.5 inch drives, but not one 3.5 inch and one 2.5 inch drive. (Fortunately, the internal SSD I installed doesn't have any moving parts, and I presume (or hope, anyway) that being installed without being tied down works.)
It also appears that, although the motherboard has two RAM slots, and the specifications manual says the computer can be configured for up to 128gb of RAM, that the computer has an inherent limit built in. I was told by a Dell tech assistant that the computer can only use 8gb of RAM. Another reviewer says it has a 16gb limit. For my purposes (video games,photo editing, graphic work), 8gb sort of works, and 16gb would work quite well from what I can tell if i can install that much RAM.
If, as another reviewer has noted, the processor can't be upgraded, that would be disappointing as well.
I've been using computers since I bought my Commodore 64 in 1982. Along the way, I'veupgraded subsequent PCs I have owned, and even built one from a kit, then upgraded that three times in the past six years. It seems to me that this Dell Inspiron desktop was not built with the idea that an owner would want to upgrade any of its capabilities. If i had known that, i would not have bought this computer. I would have preferred one I could buy with an i5 processor and 8gb of RAM that i could subsequently upgrade to a better i5 or an i7, and add more RAM.