Countersunk,
Also time.
Atlas is contracted to 'roll out' Dii/f in 'Increments'. Increment 'n' will have been mapped and either already installed or sub-contracted for installation. Increment n+1 is already mapped and 'extra' capability planned against 'previous' requirements. Anyway it is not a new 'puter that you want, you need a UAD.
You have a new requirement so that will not have been foreseen in increment n+1. I guess it may be added idc to increment n+n OR you pay mega bucks for a special installation.
Given a budget or cost of £7.3bn you can see it will not be cheap. We were given a costing of £18k to move a cabinet 15 feet.
To get you new computer you must convince your AD and LCC of your need. I think your AD will be your CIS Eng guru and your LCC is the man with the cash. Even the new post, without a UAD will cost for his account.
AD = authorised demander
LCC = Local change coordinator
Increment = tranche etc
UAD = User Access Device = 'puter etc
PS
You can now demand a Netbook for a highly mobile post.
You can demand a 27 inch monitor.
You can demand a tracker ball.
You can demand a headset and microphone for voice access.