OP means 7000 series. A 5600(x) can potentially go into his existing AM4 motherboard with a BIOS update. 6800 +/- xt also better value especially given WOWS does not use RT. I play WOWS at 4K with a 5700xt (equivalent to a 6600) and get about 100 fps with a few settings turned down a notch. BTW I got a 3700x three years ago too. Has been great value.
The guns might but the fire control couldn’t. Dreadnought secondaries were for stopping yolo torpedo boats. For early ships fire control was a telescope slapped onto the mount, not the complex director system used by the main battery to achieve 2.5% hit rate.