Intel Core 2 Quad processors

The desktop quad cores: 65 nm Kentsfield (Q6600, Q6700) and 45 nm Yorkfield (Q8000 and Q9000 series), with S versions rated at 65 W. Most LGA 771 Xeon swaps aim to replace one of these.

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

Intel Core 2 Quad processors
Model	Socket	Cores	Clock (GHz)	FSB (MT/s)	L2 cache	TDP (W)	Process	Codename	Mod
Core 2 Quad Q9650	LGA 775	4	3.0	1333	12 MB (2 x 6 MB)	95	45 nm	Yorkfield	Native
Core 2 Quad Q9500	LGA 775	4	2.83	1333	6 MB (2 x 3 MB)	95	45 nm	Yorkfield	Native
Core 2 Quad Q9505	LGA 775	4	2.83	1333	6 MB (2 x 3 MB)	95	45 nm	Yorkfield	Native
Core 2 Quad Q9505S	LGA 775	4	2.83	1333	6 MB (2 x 3 MB)	65	45 nm	Yorkfield	Native
Core 2 Quad Q9550	LGA 775	4	2.83	1333	12 MB (2 x 6 MB)	95	45 nm	Yorkfield	Native
Core 2 Quad Q9550S	LGA 775	4	2.83	1333	12 MB (2 x 6 MB)	65	45 nm	Yorkfield	Native
Core 2 Quad Q8400	LGA 775	4	2.66	1333	4 MB (2 x 2 MB)	95	45 nm	Yorkfield	Native
Core 2 Quad Q8400S	LGA 775	4	2.66	1333	4 MB (2 x 2 MB)	65	45 nm	Yorkfield	Native
Core 2 Quad Q9400	LGA 775	4	2.66	1333	6 MB (2 x 3 MB)	95	45 nm	Yorkfield	Native
Core 2 Quad Q9400S	LGA 775	4	2.66	1333	6 MB (2 x 3 MB)	65	45 nm	Yorkfield	Native
Core 2 Quad Q9450	LGA 775	4	2.66	1333	12 MB (2 x 6 MB)	95	45 nm	Yorkfield	Native
Core 2 Quad Q6700	LGA 775	4	2.66	1066	8 MB (2 x 4 MB)	95	65 nm	Kentsfield	Native
Core 2 Quad Q8300	LGA 775	4	2.5	1333	4 MB (2 x 2 MB)	95	45 nm	Yorkfield	Native
Core 2 Quad Q9300	LGA 775	4	2.5	1333	6 MB (2 x 3 MB)	95	45 nm	Yorkfield	Native
Core 2 Quad Q6600	LGA 775	4	2.4	1066	8 MB (2 x 4 MB)	105	65 nm	Kentsfield	Native
Core 2 Quad Q8200	LGA 775	4	2.33	1333	4 MB (2 x 2 MB)	95	45 nm	Yorkfield	Native
Core 2 Quad Q8200S	LGA 775	4	2.33	1333	4 MB (2 x 2 MB)	65	45 nm	Yorkfield	Native