Intel Pentium 4 1.4 GHz (socket 423) - Hardware museum
Socket 423 / Socket PGA423
Socket 423 Motherboard Compaq Mobo Rambus RDRam Vintage Retro, Computers & Tech, Parts & Accessories, Computer Parts on Carousell
Pentium 4 423 Socket Type Single Core Processors for sale | eBay
PGA423 — Wikipédia
Socket 423 Computer Motherboard for sale | eBay
New MSI 845 Pro ver: 1 MS-6529 socket 423 ATX PC motherboard main system board - NOS S423 Pentium 4 P4 Willamette AGP 4x PCI USB - Classic Computer Shop
New Processors On Old Boards: Adapters From Upgradeware for Socket 370 and Socket 423 - THG.RU