Pentium 4 used TIM, not solder | TechPowerUp Forums
SL7CH (Intel Pentium 4 Extreme Edition 3.4 GHz)
Pentium 4 wiki | TheReaderWiki
Discovering the Pentium 4 Extreme Edition Learn how Intel combined its Xeon, Xeon MP, and Pentium 4 chips to produce a high-performance 32-bit processor just in time to compete with AMD's Athlon
Review: Intel Pentium 4 3.2GHz Prescott, 3.4GHz Northwood and 3.4GHz Northwood Extreme Edition - CPU - HEXUS.net - Page 3