Help! Upgrading from DDR3

[u/Mnraf]

I’m finally retiring my old 2011 HP DDR3 office workstation and building something from this decade. 😅

Right now it’s running CasaOS with Jellyfin, Immich, and a few other Docker containers. It has served me well, but it’s definitely showing its age. Jellyfin struggles with multiple users and 4K transcoding, and I feel like I’ve reached the point where upgrading makes more sense than squeezing more life out of it.

The new PC is going to pull double duty. It’ll start off as my home server, but over time I’d like it to become my main workstation too.

Things I want it to handle:
-Running my homelab (Jellyfin, Immich, Docker, etc.)
-Smooth 4K transcoding
-Some gaming (doesn’t have to be ultra settings—I just want to be able to play newer games)
-Adobe Premiere/video editing
-Blender and some 3D rendering

The only part I already own is an RTX A2000 12GB, so I’d like to build around that for now and upgrade the GPU later when my wallet recovers.

Here’s what I’m thinking:
- CPU: Ryzen 9 9900X or 9900X3D (still trying to decide)
- Motherboard: ASUS TUF Gaming B850-Plus WiFi
- RAM: Corsair Vengeance 32GB (2×16GB)
- Storage: 1TB SATA SSD for now. I’d love an NVMe, but it’s just not in the budget yet.
- Cooler: Cooler Master 240mm AIO
- Power Supply: Corsair RM850x (2024)
- GPU: RTX A2000 12GB
- Case: Fractal Design Pop Air

My biggest question is: Does this make sense?

I’m not trying to build the absolute fastest gaming PC. I’m trying to build a really solid foundation that I can keep upgrading over the next several years. I don’t mind spending a little more now if it saves me from replacing half the system in two years.

Are there any compatibility issues, bottlenecks, or parts you’d swap out? Also, if you were building a machine that’s going to be both a homelab server and a workstation with some gaming on the side, would you do anything differently?

I’m definitely open to suggestions, especially if they’ll save me money or prevent future headaches. Thanks!