The First RISC-V Laptop Announced With Quad-Core CPU, 16GB RAM, Linux Support : r/hardware
Shanghai – World's 1st 45nm Monolithic Quad Core x86 CPU – October, 2008 | The CPU Shack Museum
AMD Athlon II X4 620 & 630: The First $99 Quad Core CPU
Review: Asus Eee Pad Transformer Prime | WIRED
dosdude1 on Twitter: "Just finished performing a very awesome CPU upgrade on a Mid-2012 13” MacBook Pro, upgrading its original dual-core i5 CPU to a quad-core i7 CPU (3615QE)! Such a swap
A Brief History of the Multi-Core Desktop CPU | TechSpot