'Tis 1.8 Intel, with 2gb ram (uupgraded) and 200mb integrated graphics - which 'should' handle Vista Basic easily. For the speed and user friendliness of Vista I shall be going back to previous OS quite soon.
For some reason I did find Vista Premium runs quicker than Basic - though as I couldn't find a permanant (cough) way of upgrading the OS I reverted back to Basic.