600KW isnt that much for a gas turbine the size of a large missile crusier's. The MiG-25's radar unit had a rated power of 600-800KW in its highest range mode, and allowed it to overpower NATO radar jamming. And that was using 2 (albeit powerful) jet engines.

The railgun is a bit more fucky. They're more in the megawatt range and the fire rate is abysmal because charging and barrelwear isn't solved. There's a reason Russia and China just went straight to hypersonic missiles - railguns are still a meme technology.

[–] Posadas@hexbear.net 3 points 11 hours ago* (last edited 11 hours ago)

That's only the output, it'd take closer to 6mw to power it which still can be done (i think the zumwalt could output 78mw or so) but it'd be a decent chunk of the energy for only one system