Yes, it is a comparatively cheap Chinese made Power Supply 400 watts, but being used widely these days for Pentium 4 computers. My initial PSU was a 250 watts, which simply shut down the computer each time I played moderately graphics dense games, and it happened with games like XPlane, Apache Air Assault, and after changing the PSU to a 400 watts PSU, the problem was solved and I could play most of the games without shutdowns, but this time it happened with this game, which I installed today.