won't be able to go quad.
Intel Core 2 Duo Processor T9500 (2.60-GHz, 800-MHz FSB, 6-MB L2 cache)*
Intel Core 2 Duo Processor T9300 (2.50-GHz, 800-MHz FSB, 6-MB L2 cache)*
Intel Core 2 Duo Processor T8300 (2.40-GHz, 800-MHz FSB, 3-MB L2 cache)*
Intel Core 2 Duo Processor T8100 (2.10-GHz, 800-MHz FSB, 3-MB L2 cache)*
Intel Core 2 Duo Processor T7700 (2.40-GHz, 800-MHz FSB, 4-MB L2 cache)*
Intel Core 2 Duo Processor T7500 (2.20-GHz, 800-MHz FSB, 4-MB L2 cache)*
Intel Core 2 Duo Processor T7300 (2.00-GHz, 800-MHz FSB, 4-MB L2 cache)*
Intel Core 2 Duo Processor T7250 (2.00-GHz, 800-MHz FSB, 2-MB L2 cache)*
Intel Celeron Processor 560 (2.10-GHz, 533-MHz FSB, 1-MB L2 cache)*
Intel Celeron Processor 545 (2.00-GHz, 533-MHz FSB, 1-MB L2 cache)*
http/www8.hp.com/h20195/v2/getpdf.aspx/c04142122.pdf