[Morgeruat]

ok, to clear up misinformation being spread here, clay golems(have the ability to haste themselves) require magical blunt weapons, of any level of enchantment;

stone golems require +2 weapons of any type (and have the ability to slow your party)

Iron/Adamantite golems need +3 weapons to hit (both breathe a cloudkill spell every few rounds)

All golems are at least 100% mag resistant (in PnP they aren't resistant, they are simply immune to all but a few spells) use lower resistance(mage spell), or magic resistance(priest spell) to lower them enough to hurt them with spells

Brain Golems require magical weapons of at least +2 enchantment (PnP rules dn't specify anything about bluntness, so that may be a BG2 addition)