I've just finished a game as the Drath with a ridiculous research rate due to the ancient trait and was wondering what other people have got? A lot more I imagine on bigger galaxies after still more conquest.
On a gigantic galaxy (genius cause I can't bear the ai movement bonuses in the opening on the top two levels, no tech brokering) I finished 7k ascension on move 143 with 10 crystals (one enhanced by the ship which increases yield) and 15 artifacts. I could have had a bit more by attacking the two remaining civs - Terrans and MuKay but decided that the v civilised and benevolent Drath wouldn't generally initiate war even against bods who hated them unless they were malevolent.
Anyway, this gave a minimum of 2340 per colony and with 212 of them and some increase due to the research stimulus capstone tech - hard to tell how much cause it's a bit broken when you'e going through several per move - it was 550413 per turn after I completed ascension and when I carried on playing just to rush the Ascension gate (just over) twice that: 1100842.