What Parts Should I Look for in a Budget First PC, and Is Desk-Mounting Safe?
Asked by
MellowCedar47
I'm building my first desktop PC in Sweden with a budget of about $500, excluding the monitor. I'm mainly considering older used hardware and need something suitable for CAD, web browsing, and light gaming. My current laptop has a Ryzen 5 3500U, integrated Radeon Vega 8 graphics, 8GB of RAM, and a 238GB SSD, so anything noticeably faster would be an upgrade.
I'm thinking of getting 16GB of DDR4 memory, preferably 2x8GB, and at least 500GB of storage. I'd appreciate suggestions for a compatible CPU, motherboard, graphics card, storage type, and power supply, especially parts that offer good value on the second-hand market.
I'm also considering mounting the components underneath my large desk inside a protective grille, similar to a wall-mounted PC. Are there practical or safety concerns with this setup, such as dust, spills, cooling, or accidental damage?
Answers
Use two 8GB DDR4 sticks instead of one 16GB stick. That enables dual-channel memory, which is especially helpful with Ryzen processors and integrated graphics. A basic AM4 build with a Ryzen 5 3600 or 5600, a B450 or B550 motherboard, 16GB of DDR4, and a 500GB or 1TB NVMe SSD would make a good starting point. NVMe drives are faster than SATA SSDs, though either is perfectly usable for this budget.
For the power supply, choose a reputable 500–650W model with an 80 Plus Bronze rating or better. Avoid unknown used units, since a failing power supply can damage the rest of the system.
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The best value may be a complete used office PC and then adding a graphics card, rather than buying every component separately. Look for systems using a standard ATX power supply and a reasonably upgradeable case; some business desktops from Dell, HP, or Lenovo use proprietary power supplies and cramped cases, which can make GPU upgrades difficult.
For a graphics card, used options such as a Radeon RX 570, RX 580, GTX 1650 Super, or GTX 1660 can be good targets depending on local prices. Check the card’s power requirements and make sure the system has enough airflow and the correct power connectors. A Ryzen 5 3600 or 5600 platform would also be a solid step up from the laptop if you find a compatible motherboard at a good price.
MellowCedar47: Are there particular office PC models worth watching for, and would one of those graphics cards be enough for light gaming and CAD?
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Mounting the hardware under the desk can work, but it introduces more risk than using even a cheap case. The underside is exposed to dust, kicked objects, loose screws, and spilled drinks. You also need to prevent the motherboard from touching the desk or mounting hardware, leave room around the CPU cooler and GPU for airflow, and make sure the graphics card is supported rather than hanging from its slot.
A case also provides grounding, protects fans and connectors, and makes maintenance much easier. If you still use the desk, add a rigid enclosure with filtered intake and exhaust openings, keep it away from your knees and cables, and avoid mounting it directly above areas where liquids could spill.
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MellowCedar47: So Ryzen is still a good choice for this kind of build? I’ll make sure to look for two matching memory sticks rather than a single module.