The power density isn't the only variable that matters. The difference doesn't matter if the cost to build a Thorium Molten Salt Reactor is much lower, especial

The power density isn't the only variable that matters. The difference doesn't matter if the cost to build a Thorium Molten Salt Reactor is much lower, especially in terms of safety and size. MSR's don't need enormous containment vessels, they also reprocess fuel. Here's some links showing power densities inline with PWRs, or greater: https://www.nextbigfuture.com/2013/12/molten-salt-reactor-about-50-times.html https://www.nextbigfuture.com/2013/12/molten-salt-reactor-ab... "Extrapolating from other liquid-to-liquid heat exchangers, roughly 150 MW/m3 is a practical upper limit to the power density of a primary-to-intermediate salt heat exchanger. For comparison, pressurized-water reactor core power density is ~110 MW/m3." https://info.ornl.gov/sites/publications/files/Pub29596.pdf https://info.ornl.gov/sites/publications/files/Pub29596.pdf