10 nm	Tremont
130 nm	Tualatin
14 nm	Airmont
180 nm	Coppermine
22 nm	Silvermont
250 nm	Deschutes
32 nm	Saltwell
350 nm	Pentium Pro(166–200 MHz)
45 nm	Bonnell
500 nm	Pentium Pro(150 MHz)
65 nm	Yonah
90 nm	Dothan
Application	Desktop
Brand names	Core 2 Quad Q8xxxCore 2 Quad Q9xxxCore 2 Extreme QX9xxxXeon 33xx
Cores	4 (2 cores per die)
CPUID code	1067x
Discontinued	2011?
FSB speeds	1066 MT/s to 1600 MT/s
Instruction set	x64
Intel 18A	Arctic Wolf
Intel 3	Arrow Lake-U
Intel 4	Crestmont
Intel 7(10 nm ESF)	Gracemont
L2 cache	Yorkfield: 12 MBYorkfield-6M: 6 MB
Max. CPU clock rate	2333 MHz to 3200 MHz
Microarchitecture	Penryn
N3B (TSMC)	Skymont
NetBurst	Katmai
NetBurst(HT)	Pentium M
Predecessor	Kentsfield
Product code	Yorkfield: 80580 Yorkfield-6M: 80581 Yorkfield CL: 80584
Socket	LGA 775, LGA 771
Successors	Lynnfield (desktops and low-end servers)Bloomfield (enthusiast and uniprocessor workstation)
Variant	Penryn QC
Yorkfield	Q9x5x
Yorkfield XE	Core 2 Extreme
Yorkfield-6M	Core 2 Quad
Yorkfield-CL	X33x3

Yorkfield

Key specifications