Cogitator
Activating Tactical Cogitators!
Cogitator is the Imperial term for any type of digital computer,[1a][15] and they are sometimes referred to as Cogitator Banks[3] or Data-engines.[1b]
Contents
Description
Produced by the Adeptus Mechanicus, it is said that Cogitators have a highly intelligent Machine Spirit but it does not approach that of true Artificial Intelligence.[1a] They are mostly large and largely mechanical, though can also include organic components. Cogitators are incorporated into buildings or spaceships, but smaller, portable examples do exist. These smaller ones are used by the Inquisition to hold and process information while on the move.[2] Miniaturised Cogitators can even be wrist-mounted.[6] Most Cogitators use datacore technology, having replaced obsolete digital technology after its rediscovery.[1b] The inside of a cogitator incorporates crystalline circuitry.[5] Cogitators can be become glitchy or even possessed by malign spirits if proper rites and rituals are not conducted properly.[4]
Emplaced Cogitators process vast quantities of data and can output through Auto Quill printout or Holo-Projection while portable units can interface with Data-slates or similar sources.[4] Data crystals can be inserted into a cogitator's download port to download data to be taken elsewhere.[9]
An old fashioned way of activating a cogitator prodecedes an invocation of the Litany of Activation, burning of the sacred incense, and the administration of the ritual blow to its side, to appease the machine-spirit.[9]
Known patterns
Core Cogitator
The Core Cogitator functions as the central 'brain' of an Imperial starship.[8]
Fluid-core Autonomous Cogitator
The latest generation in the line of Fluid-core Autonomous Cogitators is more technical sophisticated than a Warlord Titan.[10]
'Parcae' Inorganic Cogitator
The 'Parcae' Inorganic Cogitator was designed for integration into the logistical and analytical engines used by the quartermasters of the now-defunct Logistica Corpus during the Time of Deliverance, drawing on a number of ideas first theorised by Magos Wilhelm Gaytes. The Parcae can contemplate almost fifty kilobrains of information at one time thanks to its massive capacity. This allows it to analyse current trends and rationales and predict logistical dispositions over a twenty-circuits period.[7]
The 'Parcae' can be connected to any of the Series-d Electroracles, providing a powerful yet accessible cogitator that excels in logistical ratiocination, as long as the correct translators and mechasophical interpreters, as seen on the purple-bordered EXgr-76 Requisition/Trade Docket, are followed.[7]
Space Marine Kill Team Cogitator
Space Marine Kill Team Units use powerful versions of Cogitators that are able to conduct countless calculations on the foes they face. This is based off of information entered into the machines which, after analyzing, can provide a foe's likely response times to different kinds of attack, their patrol patterns and identify weaknesses in the foe's defenses.[3]
Tactical Cogitator
Ship commanders are able to consult the Tactical Cogitators of a ship, allowing the ship's machine-spirit to guide them in making tactical decisions in battle.[13][See Trivia]
Targeting Cogitator
Targeting Cogitators could automate the targeting of certain weapons platforms, such as Tarantulas. However if they were destroyed, the weapons targeting identification could falter and even turn upon their handlers and seemingly join their enemies.[12] Ships also possessed naval targeting cogitators, and power from the ship's reactor could be diverted to them in order to boost the accuracy of their ship weaponry.[13]
Bio-scryer Cogitator
Bio-scryer Cogitators are used by Knight Houses, such as House Cadmus, to hunt elusive prey.[11]
Related Articles
Trivia
The Targeting Cogitator model from Warhammer 40,000: Dawn of War II - Retribution appears to be visually based on the Forge World (Company) Power Generator
Sources
- 1: Dark Adeptus (Novel):
- 2: The Inquisition (Background Book), pg. 22 - Cogitator
- 3: Kill Team: Salvation, pg. 49 - Space Marine Scouts - Strategic Assets
- 4: Dark Heresy: The Inquisitor's Handbook, pg. 146
- 5: Dominion Genesis (Novel): The Almagest, Chapter Six
- 6: Warhammer 40,000: The Ultimate Guide, pg. 107
- 7: Warhammer 40,000 3rd Edition Rulebook, pg. 282 — Appendix
- 8: Rogue Trader: Citadel of Skulls, pg. 46
- 9: Rites of Passage (Novel), Sea of Names
- 10: Hereticus (Novel), Chapter Four
- 11: Codex: Imperial Knights (10th Edition), pg. 30 - House Cadmus
- 12: Warhammer 40,000: Dawn of War II - Retribution Ladon Temple Mission
- 13: Battlefleet Gothic: Armada (Video Game)
- 14: IMPERIAL GUARD EMPLACEMENTS (saved archive page 30 July 2008, last accessed 2 January 2026, original link)
- 15: Warhammer 40,000: Rogue Trader (Video Game), Dictionary