The first series were the V6 and V8, with 32MB and 128MB of RAM respectively; the V10 and V12 had double the geometry performance of the older V6/V8, but were otherwise similar.
ðə fˈɜːst sˈɪɹiz wɜː ðə vˈiː sˈɪks ænd vˈiː ˈeɪt, wɪð θˈɜːɾi tˈuː ˌɛmbˈiː ænd wˈʌnhˈʌndɹɪd twˈɛnti ˈeɪt ˌɛmbˈiː ʌv ˌɑːɹɹˌeɪˈɛm ɹᵻspˈɛktɪvli; ðə vˈiː tˈɛn ænd vˈiː twˈɛlv hæd dˈʌbəl ðə dʒiˈɑːmətɹi pɚfˈoːɹməns ʌvðɪ ˈoʊldɚ vˈiː sˈɪks slˈæʃ vˈiː ˈeɪt, bˌʌt wɜːɹ ˈʌðɚwˌaɪz sˈɪmɪlɚ.