[FONT=Arial]HU587 Conroe Kit, E4300, 1.80G, 2MB, 800FSB, L2[/FONT]
[FONT=Arial]DX483 Conroe Kit, E4400, 2.00G, 2MB, 800FSB, L2[/FONT]
[FONT=Arial]DX485 Conroe Kit, E6320, 1.86G, 4MB, 1066FSB, B2[/FONT]
[FONT=Arial]DX484 Conroe Kit, E6420, 2.13G, 4MB, 1066FSB, B2[/FONT]
[FONT=Arial]MP160 Conroe Kit, E6550, 2.33G, 4MB, 1333FSB[/FONT]
[FONT=Arial]MP162 Conroe Kit, E6750, 2.66G, 4MB, 1333FSB, G0[/FONT]
[FONT=Arial]MP628 Conroe Kit, E6850, 3.00G, 4MB, 1333FSB, G0[/FONT]
[FONT=Arial]WM543 Conroe XE Kit, X6800, 2.93G, 4MB, 1066FSB, B2[/FONT]
[FONT=Arial]MP626 Kentsfield Quad Core Kit, Q6600, 2.40G, 8MB, 1066FSB, G0[/FONT]
[FONT=Arial]MP627 Kentsfield Quad Core Kit, Q6700, 2.66G, 8MB, 1066FSB, G0[/FONT]
[FONT=Arial]UP673 Kentsfield Quad Core Kit, QX6700, 2.66G, 8MB, 1066FSB, B3[/FONT]
[FONT=Arial]RX656 Kentsfield Quad Core Kit, QX6800, 2.93G, 8MB, 1066FSB, G0[/FONT]
[FONT=Arial]PW016 Kentsfield Quad Core Kit, QX6850, 3.00G, 8MB, 1333FSB, G0[/FONT]
[FONT=Arial]C863D Yorkfield Quad Core Kit, QX9300, 2.5G, 6MB, 1333FSB, M1[/FONT]
[FONT=Arial]C864D Yorkfield Quad Core Kit, Q9450, 2.66G, 12MB, 1333FSB, C1[/FONT]
[FONT=Arial]C865D Yorkfield Quad Core Kit, Q9550, 2.83G, 12MB, 1333FSB, C1[/FONT]
[FONT=Arial]C299C Yorkfield Quad Core Kit, QX9650, 3.0G, 12MB, 1333FSB, C0[/FONT]
[FONT=Arial]H786G Yorkfield Quad Core kit, QX9650, 3.0G, 12MB, 1333FSB, C1[/FONT]
[FONT=Arial]X198G Wolfdale Dual Core kit, E7200, 2.53, 3MB, FD, 65W,M0[/FONT]
[FONT=Arial]Y932C Wolfdale Dual Core Kit, E8200, 2.66G, 6MB, 1333FSB, 65W, C0[/FONT]
[FONT=Arial]K905F Wolfdale Dual Core Kit, E8300, 2.83G, 6MB, 1333FSB, 65W, C0[/FONT]
[FONT=Arial]Y935C Wolfdale Dual Core Kit, E8400, 3.0G, 6MB, 1333FSB, 65W, C0[/FONT]
[FONT=Arial]Y934C Wolfdale Dual Core Kit, E8500, 3.16G, 6MB, 1333FSB, 65W, C0[/FONT]
The processors I listed above should all work, though in my opinion it would not be worth the time or cost to do so. Any socket 775 65nm cpu should be compatible.
You could probably buy a better performing modern motherboard and cpu for the money people are asking for a QX9650 online.