ArsenalPC Gigabyte C301 GLASS Intel Core Ultra 7 265KF RTX 5090 64GB DDR5 4TB NVMe

High-end gaming desktop

The ArsenalPC Gigabyte C301 GLASS is a complete Windows 11 Home system built around an Intel Core Ultra 7 265KF 20-core processor running at 5.4GHz. It targets enthusiasts who want a pre-assembled machine ready for 4K gaming and heavy creative workloads without selecting individual parts. The 64GB DDR5 memory and 4TB NVMe SSD provide a large, fast foundation for modern titles and content-creation suites. Buyers who need a smaller storage footprint or a lower-tier GPU will not match this configuration.

Build integration

A 1200W power supply drives the GeForce RTX 5090 with 32GB GDDR7 over a PCI Express x16 link, while a 240mm liquid cooler handles the CPU thermal load. The Gigabyte C301 GLASS chassis includes WiFi and RGB lighting, leaving all four DDR5 slots populated and no internal drive bays mentioned for expansion. The platform uses the LGA 1851 socket, so coolers must match that mounting pattern. Builders who require additional drive bays or a different socket standard cannot use this platform as-is.

Sustained load behaviour

The 240mm liquid cooler is sized to maintain the 20-core CPU at its 5.4GHz base frequency during extended sessions, while the 1200W unit supplies stable power to the RTX 5090 under continuous render or compute stress. Windows 11 Home manages driver scheduling and memory compression across the 64GB DDR5 pool for consistent frame pacing. Systems without liquid cooling or with lower-wattage supplies will throttle sooner under identical prolonged workloads.