Central Processing: Primary Server Bank

From DoomWiki.org

Doom 3 maps
Central Processing: Primary Server Bank
Map name: game/cpuboss
"Welcome to the Mess Hall!"
― Sabaoth [source]

Central Processing: Primary Server Bank (called Central Server Banks: Primary Server Bank in Doom 3: BFG Edition and on the original Xbox version) is the twenty-third level of Doom 3. The player fights the third boss, Sabaoth, the demon transformation of Sergeant Kelly.


Spoiler Warning: Plot details follow.

The marine enters the Primary Server Bank and faces a host of monsters almost immediately while the demonified Sergeant Kelly taunts him over the loudspeakers. After clearing out the CPU complex, the marine goes to the Central Bridge which is positioned within a massive chamber leading to multiple sections of the facility. The marine must reach Central Processing where Sergeant Kelly is located. However, he first needs to find Steve Tooloose's PDA to gain access.

The marine heads to the Server Bank and recovers Tooloose's PDA. There is also an informational video on the BFG 9000. The video reveals that small arms ballistics can cause the BFG projectile to detonate prematurely.

The marine makes it to Central Processing, where he finds Sergeant Kelly waiting for him. The Sergeant has been transformed into a hideous tank-like monster called Sabaoth. He has also integrated Campbell's BFG into his body, and uses it against the marine. The marine, however, uses his newly acquired knowledge of the BFG's weaknesses against Sabaoth. After an extended fight, the marine defeats his former commanding officer, and takes Campbell's BFG for himself. He then heads down into Sublevel 9 and takes the elevator to the next level: Site 3.


CPU Complex
Central Bridge
Serverbanks Entrance
Serverbanks Control
Storage Hall
Storage 1
Main Storage
CPU Access
Sarge's Garage
Sub Level 9


Security Bridge
Obtain security clearance to access central processing
Spoilers end here.



Video disks[edit]



The enemy count on Nightmare is the same as on Veteran. There are no changes in enemy amount in the BFG Edition.

Enemies Recruit Marine Veteran
Imp 12 14
Trite 13 17
Wraith* 9
Cacodemon 4 6
Revenant** 4 5
Tentacle commando 3 5
Chain gun commando 2
Arch-vile 3
Sabaoth 1

* Wraiths in this level are spawned by the arch-viles, thus their amount can vary. Here only the number of distinct spawn points is shown.
** If playing on Nightmare difficulty, one revenant cannot be killed - it would normally appear when a medikit in the Main Storage room is collected, but there is no medikit on Nightmare. The revenant can still be heard behind the wall, but there is no way to make it emerge.


The item count on Nightmare is the same as on Veteran, except the med kits are absent. There are no changes in the amount of items in the BFG Edition.

Items Recruit Marine Veteran
Plasma gun 1
Rocket launcher 1
BFG 9000 1
Bullets (small) 2
Shells (large) 5
Clip (small) 2
Clip (large) 9 8
Ammo belt 9
Grenades 2
Cells (small) 11
Cells (large) 1
Rockets (large) 7 4
BFG cell 1
Med kit (small) 3
Med kit (large) 12
Armor shard 34
Security armor 6 5
Adrenaline 3

There is one health station on the level, with 80 health in reserve (it has 100 health in BFG Edition).

Starting inventory[edit]

If the player starts the level via a console command, they will start with these items:

Item Amount
Flashlight 1
Pistol 1
Shotgun 1
Machine gun 1
Chain gun 1
Plasma gun 1
Rocket launcher 1
Chainsaw 1
Soul Cube 1
Bullets (large) 2
Shells (large) 3
Clip (large) 2
Ammo belt 2
Grenades 2
Cells (large) 2
Rockets (large) 2


  • In Serverbanks area, there are items located on top of the data banks in the lower floor. To access them, the player needs to break a cracked window on the upper floor and jump on the banks through it.


External links[edit]

  • Walkthrough video by WoopzillaWalkthrough (part 1; part 2) on YouTube. Veteran difficulty; part of a full game run.