I’m not very tech savvy so please bear with me.
I bought a premade in 2018 and I’ve only updated the graphics card and ram since then. I’m using a 55" Samsung TV as a monitor. It’s really starting to get sluggish/finicky. Gaming example: it can run BGate3 on medium but starts having issues any higher.
- Processor: Intel Core i3-8100 Coffee Lake CPU, 4 Cores, 3.6GHz
- Graphics Card NIVIDIA GeForce GTX 1070 8gb
- CPU Cooler: Intel Stock CPU Cooler
- Motherboard: ASUS Z370-P Motherboard
- Memory: 8GB DDR4 2400MHz Memory (2 x 4GB Sticks) + Crucial Ballistix BL2K8G36C16U4B 3600 MHz, DDR4, DRAM, Desktop Gaming Memory Kit, 16GB (8GB x2), CL16, Black
- Hard Drive: Seagate 2TB Firecuda Hybrid Hard Disk
It’s a six year old system. Optimistically you’ll be able to salvage the PSU, case and storage. Whether you should salvage the PSU and case is up to you, prebuilts aren’t known for picking the best of these.
Personally I’d use the machine for something else (or sell it to someone for $300-400) and build what you want. (Edit: I’ve had good results moving the core system components into a USFF or NAS case and repurposing as a home server. That’s a pretty typical end of lifecycle role for an aging gaming desktop.)