Built Base Units

Looking for a custom built PC that's designed around your exact requirements? At 3B Systems, we specialise in high-quality bespoke desktop PCs and gaming PC base units, offering everything from affordable budget systems to high-end performance machines. Whether you need a PC for CAD design, gaming, home use, office work, internet browsing or everyday computing, we can help you find the right system.

Our custom built PCs are available in store and for delivery, with a range of systems available from stock or built to order. We offer platforms featuring the latest Intel and AMD processors, along with powerful graphics solutions including NVIDIA GeForce RTX and AMD Radeon graphics cards. From compact and efficient home PCs to powerful workstation and gaming systems, we have options to suit a wide range of requirements and budgets.

Every PC is professionally assembled with careful cable management and undergoes a comprehensive testing process before leaving our workshop. This includes BIOS updates, Windows testing, memory diagnostics, CPU and GPU testing, and extended soak testing to ensure your system is reliable, stable and ready to use.

Choose from a range of cooling options including air cooled, liquid cooled and watercooled PCs, with bespoke configurations available upon request. Our team can help you select the ideal components including processor, graphics card, memory, storage and cooling solution to create a custom PC built specifically for your needs.

FREE UK Delivery on selected PCs! Check individual product listings for more information or use the filters to view systems with Free Shipping and find the perfect custom built PC for your requirements.