Upgrading the CPU in ThinkPad X61 — Wenting's Web Page
ThinkPad T60P - CPU upgrade problem (T2600 - T7600). The T60 will not boot with the T7600 installed, no post screen. Was thinking this ThinkPad supported up too T7600? : r/thinkpad
ThinkPad X61: The Subnotebook That Got a Second Chance - YouTube