X1
X1 denotes:
- ATI Mobility Radeon X1 - Series, a series of graphics processors for notebooks
- ATI Radeon X1 series, a series of desktop graphics chips from AMD
- Bell X1, an Irish band from Celbridge, County Kildare
- BMW X1, a sport utility vehicle
- Electro Logica X1, an early digital computer
- House X1, a Grade II listed house in Cologne Hahnwald
- SL X1, a type of train in Sweden
- Sony Ericsson X1, a smartphone
- Wright Speed X1, a prototype sports car ( roadster )
- A class of interference suppression capacitors
- A unique feature for the goodness-of T1
X -1, respectively:
- Bell X-1, American experimental rocket plane and
- Circinus X -1, an X-ray binary star in the constellation circle
- Cygnus X-1, an X-ray binary star in the constellation Cygnus
- Hercules X -1, a Röntgenpulsar
- Scorpius X-1 is an X-ray source; about 9000 light years from Earth
- X -1 ( submarine ), the only small submarine of the U.S. Navy
- Disambiguation
- Abbreviation