CUBE Compact Gaming PC — Ryzen 7 7800X3D + RX 9070 XT | Bespoke Builds — A Steam Machine Alternative

The CUBE — Small Form Factor, Full-Size Power

Valve's new Steam Machine proved there's real demand for a compact, cube-shaped gaming PC under the TV or on the desk. The Bespoke Builds CUBE takes that idea and builds it properly: housed in the Lian Li A3, a genuinely premium small-form-factor case with the same clean cube-style presence, it packs the AMD Ryzen 7 7800X3D (3D V-Cache, the CPU that redefined gaming) and the AMD Radeon RX 9070 XT 16GB — with an RTX 5080 upgrade available right on this page. Add 32GB of DDR5, a 2TB SSD, and a 240mm liquid cooler, and this compact machine outclasses what Valve is shipping by a wide margin.

Choose your case color: Black (default) or Brown. Want the SteamOS experience? We can flash SteamOS in place of Windows 11 Pro — just select the option.

CUBE vs. Steam Machine

Steam Machine specs sourced from Valve's public announcement. Steam Machine is a trademark of Valve Corporation; Bespoke Builds is an independent PC builder and is not affiliated with or endorsed by Valve.

Real Gaming Performance (Est. Avg FPS, Mid–High Settings)

1080p

1440p

(Estimates based on published benchmarks; FSR/DLSS enabled where supported; actual FPS varies by settings, game version, and drivers.)

Full Specifications

• CPU: AMD Ryzen 7 7800X3D — 8 Cores / 16 Threads, 3D V-Cache
• GPU: AMD Radeon RX 9070 XT 16GB (RTX 5080 upgrade available on this page)
• RAM: 32GB DDR5
• Storage: 2TB SSD
• Motherboard: B850M
• Cooling: 240mm Liquid Cooler
• Case: Lian Li A3 — Black (default) or Brown
• PSU: Corsair RM850X 850W, 80+ Gold
• OS: Windows 11 Pro (Activated) — SteamOS flash available as an alternative

Why Bespoke Builds?

✅ Priced below Amazon & big-box retailers for the same hardware ✅ Free Shipping — no surprises at checkout ✅ 3-Year Warranty on parts and labor — triple the industry standard ✅ Hand-Built, Cable-Managed & Stress-Tested before it ships ✅ Customizable — GPU, case color, OS, and special requests before checkout

Who Is This PC For?

Anyone who wants a small, striking PC for a TV setup or a minimal desk — without giving up real performance. The CUBE fits where a full tower can't, runs quiet, and delivers frame rates a stock Steam Machine simply can't touch. Run Windows 11 Pro for full compatibility and your existing library, or flash SteamOS for that couch-friendly, controller-first experience Valve is selling — on hardware that's actually built to handle it.

Ryzen 7 7800X3D. RX 9070 XT — RTX 5080 upgrade available. Compact Lian Li A3 case. Windows 11 Pro or SteamOS. Free shipping, 3-year warranty, priced below the big retailers.