AARRGGHHH,
Core 2 Extreme Processors have an unlocked multiplier for easy overclocking, rather than having to overclock by increasing Front Side Bus (FSB) speed.
Here's a summary of Core 2 Duo and Quad processors including Extreme variants of original 1st Generation 65 nanometers and final 2nd Generation 45 nanometers:
---------------------------------------------------------------
65 nm Core 2
Extreme -
Dual Core - 75 Watts TDP
X6800 @ 2.93 GHz - 1066 FSB - 4 MB Cache
65 nm Core 2 Duo -
Dual Core - 65 Watts TDP
E6850 @ 3.00 GHz - 1333 FSB - 4 MB Cache
E6750 @ 2.93 GHz - 1333 FSB - 4 MB Cache
E6700 @ 2.66 GHz - 1066 FSB - 4 MB Cache
E6600 @ 2.40 GHz - 1066 FSB - 4 MB Cache
E6550 @ 2.33 GHz - 1333 FSB - 4 MB Cache
Slower E6xxx variants are 1066 FSB with 4 or 2 MB Cache.
E4xxx variants are 800 MHz FSB with 2 MB Cache.
65 nm Core 2
Extreme -
Quad Core - 130 Watts TDP
QX 6850 @ 3.00 GHz - 1333 FSB - 8 MB Cache
QX6800 @ 2.93 GHz - 1066 FSB - 8 MB Cache
QX6700 @ 2.66 GHz - 1066 FSB - 8 MB Cache
65 nm Core 2 -
Quad Core
Q6700 @ 2.66 GHz - 1066 FSB - 8 MB Cache - G0 Stepping 95 Watts TDP
Q6600 @ 2.40 GHz - 1066 FSB - 8 MB Cache - G0 Stepping 95 Watts TDP
Q6600 @ 2.40 GHz - 1066 FSB - 8 MB Cache - B3 Stepping 105 Watts TDP
----------------------------------------------------------
45 nm Core 2 Duo -
Dual Core - 65 Watts TDP
E8600 @ 3.33 GHz - 1333 FSB - 6 MB Cache
E8500 @ 3.16 GHz - 1333 FSB - 6 MB Cache
E8400 @ 3.00 GHz - 1333 FSB - 6 MB Cache
E8300 @ 2.83 GHz - 1333 FSB - 6 MB Cache
E8200 @ 2.66 GHz - 1333 FSB - 6 MB Cache
E8190 @ 2.53 GHz - 1333 FSB - 6 MB Cache
E7xxx variants are 1066 FSB with 3 MB Cache.
45 nm Core 2
Extreme -
Quad Core
QX9775 @ 3.20 GHz - 1600 FSB - 12 MB Cache - 150 Watts TDP
QX9770 @ 3.20 GHz - 1600 FSB - 12 MB Cache - 136 Watts TDP
QX9650 @ 3.00 GHz - 1333 FSB - 12 MB Cache - 130 Watts TDP
45 nm Core 2 -
Quad Core - 95 Watts TDP
Q9650 @ 3.00 GHz - 1333 FSB - 12 MB Cache
Q9550 @ 2.83 GHz - 1333 FSB - 12 MB Cache
Q9450 @ 2.66 GHz - 1333 FSB - 12 MB Cache
Q9x0x variants are 6 MB Cache.
"S" variants are 65 Watts TDP.
Q8xxx variants are 4 MB Cache.
"S" variants are 65 Watts TDP.
--------------------------------------
Arguably, the last and best non-Extreme Quad Core processor for socket 775 is the
Q9650, which can overclock to 4.2 GHz.
Aslo, unlike Core i processors, Core 2 processors do not have Hyper-Threading.
Refer to Intel's
Processor Specifications website for Legacy Processors.
CT
