Best Gaming PC Build Under $300 in 2026

The $300 Gaming Reality: No Discrete GPU Required

A brand-new gaming PC for under $300 will not include a dedicated graphics card, but it can still comfortably run esports titles and lighter modern games at 1080p. The trick is building around AMD's APUs (Accelerated Processing Units)—specifically the Ryzen 5 5600G—which pack competent Radeon Vega integrated graphics right onto the CPU die.

If you have tight cash constraints, this build gets you running on modern hardware today while leaving an open upgrade path to drop in a dedicated graphics card like an RX 6600 later.

Quick Picks: The Sub-$300 Parts List

• Processor (APU): AMD Ryzen 5 5600G ($115)
• Motherboard: ASUS Prime A520M-K or ASRock B450M-HDV R4.0 ($60)
• Memory: Silicon Power Value Gaming 16GB (2x8GB) DDR4-3200 CL16 ($32)
• Storage: Teamgroup MP33 512GB PCIe 3.0 NVMe SSD ($35)
• Power Supply: Thermaltake Smart 500W 80+ White ($40)
• Case: Cooler Master MasterBox Q300L ($40)

Component Breakdown

CPU & Integrated Graphics: AMD Ryzen 5 5600G

The Ryzen 5 5600G features 6 cores, 12 threads, and built-in Vega 7 graphics. The original draft of this guide called it an octa-core chip—that was factually wrong. It is a 6-core Zen 3 processor with a 4.4 GHz boost clock and a 16MB L3 cache (cut down from the standard 5600's 32MB to fit the graphics compute units).

The included Wraith Stealth cooler is more than enough to keep temps below 72°C during heavy gaming sessions. Don't waste cash on an aftermarket air cooler here; save every dollar for your core components.

Motherboard: ASUS Prime A520M-K

At this price ceiling, motherboard choice comes down to reliability and basic expandability. The ASUS Prime A520M-K delivers a PCIe 3.0 x4 M.2 slot for high-speed storage, dual DDR4 DIMM slots, and an HDMI 2.1 output for your display.

We would skip cheaper A320 boards entirely. Many lack out-of-the-box BIOS support for 5000-series chips, and dealing with a bricked boot without a flashback button is a nightmare for first-time builders.

RAM: 16GB (2x8GB) DDR4-3200 CL16

Do not install a single 8GB stick in an APU build. Integrated graphics share bandwidth with your system memory, so single-channel RAM will cut your frame rates nearly in half. A 16GB dual-channel kit running at 3200MHz (or 3600MHz if found on sale) is mandatory to feed the Vega graphics cores enough throughput.

Storage: Teamgroup MP33 512GB NVMe SSD

Ditch legacy 2.5-inch SATA SSDs like the Kingston A400. For virtually the same $35 price point, an entry-level PCIe 3.0 NVMe drive delivers sequential reads up to 1,800 MB/s—over three times faster than SATA—and mounts directly to the board without running SATA data or power cables.

Power Supply: Thermaltake Smart 500W

The original build used a 430W unit, but the 500W model often sells at the exact same price. It gives you dual 6+2 pin PCIe power connectors and enough wattage headroom to safely drop in a 130W to 170W dedicated graphics card later on without swapping the PSU.

Case: Cooler Master MasterBox Q300L

The MasterBox Q300L remains a staple budget micro-ATX chassis. It gives you magnetic dust filters, decent cable routing space behind the motherboard tray, and an acrylic side panel. Airflow through the perforated front panel is solid enough to keep an APU setup chilly.

Budget Breakdown & Component Specs

Real-World Gaming Performance

You need realistic expectations: you aren't playing Cyberpunk 2077 or Alan Wake 2 at 1440p high settings with this setup. But for competitive esports and casual gaming, the 5600G holds up remarkably well:

• Valorant (1080p, Low): 130–160 FPS
• Counter-Strike 2 (1080p, Low / FSR Quality): 55–70 FPS
• Fortnite (1080p, Performance Mode): 75–90 FPS
• Rocket League (1080p, High Quality): 80–95 FPS
• Grand Theft Auto V (1080p, Normal): 55–65 FPS
• Genshin Impact (1080p, Medium): 45–55 FPS

The Future Upgrade Path

The best feature of this rig is that it is not a dead end. When your budget expands by another $150 to $200, you can plug in a dedicated graphics card such as an AMD Radeon RX 6600 8GB or an Nvidia RTX 3050 6GB. Once installed, that single upgrade turns this entry-level machine into a genuine 1080p ultra-preset gaming PC.

Buying Used Instead? The Refurb Office PC Alternative

If you want raw gaming frames right now and don't care about shiny new parts, consider hunting the used market. You can often buy a refurbished Dell OptiPlex or HP ProDesk with a 6-core Intel 8th or 9th-gen processor for roughly $130, then drop in a low-profile GTX 1650 or Radeon RX 6400 for another $100. That combination yields slightly higher immediate frame rates, though it lacks the clean upgrade path and warranty support of building new on AM4.

FAQ

Can this $300 gaming PC run modern AAA games?

It can run older AAA titles like GTA V, Skyrim, and The Witcher 3 at 1080p on low-to-medium settings at 45 to 60 FPS. Newer, unoptimized releases from recent years will require lowering your render scale with AMD FSR or dropping the resolution to 720p to stay playable.

Why did you pick 16GB of RAM instead of 8GB?

AMD APUs share system RAM as video memory. An 8GB configuration leaves barely 6GB for Windows and your game after the graphics core claims its share. Running two 8GB sticks in dual-channel mode doubles the memory bandwidth and prevents massive frame drops.

Do I need to buy Windows for this build?

No. You can download the official Windows 10 or 11 installation media directly from Microsoft for free onto a USB drive. You can install and play games on an unactivated copy indefinitely without performance penalties, or buy an inexpensive OEM license later.