Some French geek ultimately gets best type of computer (7)
I believe the answer is:
desktop
'type of computer' is the definition.
(desktop computer)
'some french geek ultimately gets best' is the wordplay.
'some french' becomes 'des' ('some' in French).
'ultimately' says to take the final letters.
'gets' means one lot of letters go next to another.
'best' becomes 'top' (top can mean the very best).
The final letter of 'geek' is 'k'.
'des'+'k'+'top'='DESKTOP'
(Other definitions for desktop that I've seen before include "Location of icons" , "board?" , "Office work surface" , "Work surface; computer type" , "Sort of publishing" .)