My five-year-old laptop has finally given up, so I'm putting together a desktop that I hope will last longer. I'm prioritizing longevity and performance, even though the build is already near the limit of my budget. The PC will mainly be used for gaming and developing AI applications locally. I'm in Portugal, and the parts would cost roughly €2,800.
Could you check whether everything is compatible and whether any component should be changed? I also have a 2TB drive from my old system that I plan to reuse mainly for data, while the new NVMe drive would hold the operating system and applications. I may add two 140mm fans at the bottom of the case later.
Planned parts:
- AMD Ryzen 7 9800X3D
- PNY GeForce RTX 5080 16GB ARGB OC Triple Fan
- Gigabyte B850 Eagle WIFI6E
- Thermalright FW360 SE ARGB V2 360mm liquid cooler
- Crucial P310 1TB PCIe 4.0 NVMe SSD
- Crucial Pro 32GB (2x16GB) DDR5-6000 CL36
- Corsair RM850e (2025) 850W power supply
- NZXT H6 Flow RGB case
- Thermalright TL-M12Q 120mm rear fan
4 Answers
For cooling, the 360mm AIO should fit if the case and radiator position are checked carefully, but the 9800X3D does not require an extreme cooler for gaming. A good air cooler could potentially save money and avoid pump failure, though the AIO is reasonable if you prefer its appearance. Adding a rear exhaust fan is sensible, and bottom intake fans can help the graphics card later as long as they don’t interfere with clearance or create excessive noise.
Since you also want to run AI workloads locally, the 16GB of VRAM on the RTX 5080 may become the limiting factor before the rest of the system does. It should be excellent for gaming and smaller models, but larger models or heavier workloads may require quantization, reduced batch sizes, or offloading to system RAM. If local AI is a major priority, compare the price of a card with more VRAM before finalizing the build.
The 1TB SSD is fine for the operating system and applications, especially if you reuse the 2TB drive for data. Just check the condition and health of the old drive before trusting it with anything important, and keep a backup. If the budget is tight, storage capacity is an easier compromise than reducing the CPU or GPU performance.
The parts are generally compatible: the Ryzen 7 9800X3D uses the AM5 socket, and the B850 motherboard supports it with DDR5 memory. For gaming, this is a very powerful combination. The main things I’d double-check are that the motherboard has a suitable BIOS version, the case supports the 360mm radiator in the intended mounting position, and the graphics card’s length and thickness fit with the radiator installed. Also make sure the power supply includes the correct native connector for the RTX 5080 rather than relying on a questionable adapter.
That’s the plan: I’ll use the older 2TB drive mainly for data and keep the new NVMe drive for the operating system and applications. I’m considering a smaller drive to save some money, but I don’t want to make the main system cramped.