Four mainstream and one high-end processor models will be released to the market on July 27. Core 2 Extreme X6800 is the cavalry (expect to spend one grand on it), while Core 2 Duo E6700 to E6300 represent the main strike force.
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Core 2 Model
Clock Speed
Multiplier
Front Side Bus Speed
L2 Cache
Extreme X6800
2,933 MHz
x11
266 MHz (FSB1066 QDR)
4 MB
Duo E6700
2,666 MHz
X10
266 MHz (FSB1066 QDR)
4 MB
Duo E6600
2,400 MHz
X9
266 MHz (FSB1066 QDR)
4 MB
Duo E6400
2,133 MHz
X8
266 MHz (FSB1066 QDR)
2 MB
Duo E6300
1,866 MHz
X7
266 MHz (FSB1066 QDR)
2 MB
All Core 2 processors run at a Front Side Bus (FSB) speed of 266 MHz now, whereas most Pentium 4 and Pentium D models typically run at 200 MHz. At four data transfers per cycle (quad data rate mode) this results in a marketing-friendly FSB1066 bus speed, delivering a 8.5 GB/s bandwidth. Except for the entry level, all models have a 4 MB L2 cache that is used by both processing cores. All processors support Intel's 64 bit instruction set (EM64T), the streaming extensions (SSE2 and SSE3), the virtualization technology (VT) and the Execute Disable bit (XD). In addition to these functional features, all models support the latest thermal and energy management features such as the Thermal Monitor 2 (TM2), the Enhanced Halt State (C1E) and Enhanced SpeedStep (EIST).
Core 2 Extreme X6800
The Extreme Edition processor is the only version that allows the user to alter the multiplier, so she or he can overclock or underclock it easily.
Patrick Schmid was the editor-in-chief for Tom's Hardware from 2005 to 2006. He wrote numerous articles on a wide range of hardware topics, including storage, CPUs, and system builds.
