Intel Core 2 Quad, Extreme, & Xeon CPUs (LGA 775) + Current Prices

In this article, we'll compare the current prices and specifications for all of Intel's quad core LGA 775 processors.

• Intel Core 2 Quad
• Intel Core 2 Extreme
• LGA 775 Xeons

List of Quad Core LGA 775 CPUs

Note: The prices and links shown below are for eBay. All prices are current and are automatically updated throughout the day.

Key features and differences between CPUs

The CPUs shown below are grouped by codename, since most CPUs with the same codename are very similar. You can find the codename for each processor in the main CPU table.

	Yorkfield XE	Yorkfield	Yorkfield-6M	Kentsfield XE	Kentsfield
CPUs (where x = any digit)	Core 2 Extreme QX9xxx	Core 2 Quad Q9x50   Xeon X33x0, L33x0	Core 2 Quad Q9x0x, Q8xxx   Xeon X3330, X3320	Core 2 Extreme QX6xxx	Core 2 Quad Q6xxx   Xeon X32xx
Node	45nm	45nm	45nm	65nm	65nm
Microarchitecture	Penryn	Penryn	Penryn	Core	Core
Cores	4	4	4	4	4
L2 Cache	2 × 6 MB	2 × 6 MB	Q8xxx: 2 × 2 MB   All others: 2 × 3 MB	2 × 4 MB	2 × 4 MB
Unlocked ratio (multiplier)
SSE4.1
Virtualization Technology (VT-x)			All (except Q8200)[a]
Virtualization Technology for Directed I/O (VT-d)		All (except Xeons)	All (except Q9500, Q8xxx, Xeons)
Enhanced Intel SpeedStep Technology (EIST)
Trusted Execution Technology (TXT)		All (except Xeons)	All (except Q9500, Q8xxx, Xeons)
Steppings	C1, C0	E0, C1, C0	R0, M1, M0	G0, B3	G0, B3
Die size	2 × 107 mm2	2 × 107 mm2	2 × 82 mm2	2 × 143 mm2	2 × 143 mm2
Voltage	0.85–1.36 V	0.85–1.36 V	0.85–1.36 V	1.1–1.37 V	Core 2 Quad: 1.1–1.37 V   Xeon: 0.85–1.5 V

• ^a Note: Some revisions of the Q8200S and Q8300 also do not support VT-x (see notes in the CPU table).

CPU Stepping (Revision) & CPUID Information

If you're unsure what a stepping is, Intel basically creates a new stepping (or revision) whenever they make a major change to a processor. This usually fixes bugs, adds new features, reduces power consumption, or improves overclocking.