Filed under: LaptopsAs the Penryn updates slow to a trickle, Dell is looking out for one remaining straggler by updating the potent Precision M6300 workstation. Starting today, users can select either the 2.6GHz T9500 Core 2 Duo or the drool-worthy 2.8GHz X9000 Core 2 Extreme, but curiously enough, only the T9500 is listed as an option ($370 upgrade over the base T7500) when entering the US configuration site. Nevertheless, we reckon Dell will have that sorted soon enough, and while you're