I am going to have to give it to you. If you want a weak small box that runs steam not very well the Steam Machine is the way to go. If you are a PC gamer and want a more powerful system for less that is upgradable you have better options out there.

DDR4 or DDR5 means next to nothing for these low end systems. Higher performance requires more power and space. Today you can get a higher performance PC gaming system for less than the cost of the Steam Machine. You can also upgrade the system I provided. The steam machine has no place in PC gaming. It is a waste of money and time.

STORMCRAFT Gaming PC SIRIUS Intel Core i5-14400F NVIDIA GeForce RTX 5060 – AI Powered 16GB 3200MHz RGB 1TB NVMe SSD 650W PSU Windows 11 Home $899

https://www.newegg.com/stormcraft-sirius-gaming-desktop-pc-geforce-rtx-5060-intel-core-i5-14400f-16gb-ddr4-1tb-ssd-si1440fbb-560n2/p/N82E16883420040?Item=N82E16883420040

Steam Machine has no place in the PC Gamer world. Just get a prebuilt PC for the same price that is more powerful.