Intel Core 2 Extreme processors

The unlocked top end: QX6700 to QX6850 (Kentsfield), QX9650 and QX9770 (Yorkfield) on LGA 775, and the QX9775 on LGA 771 for dual-socket enthusiast boards.

6 chips, fastest first. Each row opens the full spec sheet.

Intel Core 2 Extreme processors
Model	Socket	Cores	Clock (GHz)	FSB (MT/s)	L2 cache	TDP (W)	Process	Codename	Mod
Core 2 Extreme QX9770	LGA 775	4	3.2	1600	12 MB (2 x 6 MB)	136	45 nm	Yorkfield	Native
Core 2 Extreme QX9775	LGA 771	4	3.2	1600	12 MB (2 x 6 MB)	150	45 nm	Yorkfield	Adapter
Core 2 Extreme QX6850	LGA 775	4	3.0	1333	8 MB (2 x 4 MB)	130	65 nm	Kentsfield	Native
Core 2 Extreme QX9650	LGA 775	4	3.0	1333	12 MB (2 x 6 MB)	130	45 nm	Yorkfield	Native
Core 2 Extreme QX6800	LGA 775	4	2.93	1066	8 MB (2 x 4 MB)	130	65 nm	Kentsfield	Native
Core 2 Extreme QX6700	LGA 775	4	2.66	1066	8 MB (2 x 4 MB)	130	65 nm	Kentsfield	Native