I'm building my first desktop and want something powerful enough for gaming, university work, and streaming. I'm in Germany and would like to stay below €4,000, with the current parts totaling roughly €3,500.
My planned parts are 64GB (2x32GB) DDR5-6000 CL30 EXPO memory, an AMD Ryzen 7 7800X3D or 9800X3D, an NVIDIA GeForce RTX 5080 16GB, an AM5 motherboard such as the MSI MAG B850 Tomahawk WiFi, a 2TB PCIe 4.0 NVMe SSD, a 1,000W be quiet! Pure Power 12 Gold power supply, and either a Lian Li LANCOOL 216 or be quiet! Shadow Base 800 DX case. For cooling, I was considering a Thermalright Peerless Assassin dual-tower air cooler or a liquid cooler.
I'm unsure whether the parts are compatible, whether the SSD needs its own heatsink, if liquid cooling or a triple-fan cooler would be better, whether 32GB or 64GB of RAM makes more sense, and whether a Gold or Platinum power supply is worth buying. I'm new to building PCs, so any advice would be appreciated.
3 Answers
The parts look broadly compatible, but make sure the case supports the exact graphics-card length and CPU-cooler height. The LANCOOL 216 is a particularly sensible option because it already has strong airflow, which is useful for a power-hungry graphics card and for keeping dust and pet hair under control. Extra bottom intake fans can help direct air toward the GPU, although they are optional.
A good 850W ATX 3.0 or 3.1 supply should be enough for this system, provided it is a reputable model with the correct modern GPU power connector. A 1,000W unit gives additional headroom but is not automatically better.
Gold versus Platinum mainly describes efficiency, not overall build quality. The real-world efficiency difference is small, so a high-quality Gold unit is usually the better value unless the PC will run at high load constantly or electricity is unusually expensive.
For storage, use the motherboard’s heatsink and choose a reliable TLC-based NVMe drive rather than selecting solely by brand or headline speed. The RTX 5080 is powerful, but check its price carefully: depending on German pricing, a cheaper high-end card could offer much better value. Your monitor resolution also matters—1440p is a strong balance for high-refresh gaming, while 4K makes more use of a card in this class.
The motherboard should include an M.2 heatsink for the primary SSD slot, so you normally do not need to buy a separate one. The Peerless Assassin is already more than capable of cooling either of these Ryzen 7 processors, and a dual-tower cooler will generally be quiet. An AIO liquid cooler would mostly be an aesthetic choice here rather than a performance requirement.
For gaming, 32GB is still plenty, while 64GB is reasonable if you expect to run virtual machines, heavy creative applications, or many demanding programs at once. Also check the motherboard’s CPU support list and BIOS version, particularly if using the older 7800X3D with a newer B850 board.
That helps a lot. I was mainly considering 64GB because I thought more memory would automatically make games run cooler and faster, but it sounds like I should choose it based on the programs I’ll actually use.