CPU upgrade for Precision M6300

I want to upgrade the CPU of my Precision M6300. Which processors can be used with it? 

My current processor is a Intel Core 2 Duo T7500  -  2.20GHz, 4MB L2 Cache, 800MHz FSB, Socket P (478 pin), 35W (65 nm Technology)

So far I found the following:

Merom (standard-voltage, 65 nm)
Intel Core 2 Duo T7800  -  2.60GHz, 4MB L2 Cache, 800MHz FSB, 35W

Penryn (standard-voltage, 45 nm)
Intel Core 2 Duo T9300  -  2.50GHz, 6MB L2 Cache, 800MHz FSB, 35W
Intel Core 2 Duo T9500  -  2.60GHz, 6MB L2 Cache, 800MHz FSB, 35W

Merom XE (standard-voltage, 65 nm)
Intel Core 2 Duo Extreme X7900  -  2.80GHz, 4MB L2 Cache, 800MHz FSB, 44W

Penryn XE (standard-voltage, 45 nm)
Intel Core 2 Duo Extreme X9000  -  2.80GHz, 6MB L2 Cache, 800MHz FSB, 44W

Can anybody confirm that those above are compatible with the M6300?