That's really not true. Memory bandwidth, just like memory capacity becomes a bottleneck when it is exceeded, but more doesn't automatically speed anything up.

That's really not true. Memory bandwidth, just like memory capacity becomes a bottleneck when it is exceeded, but more doesn't automatically speed anything up. Java and python programs will likely be hopping around in memory and waiting on memory to make it to the CPU as a result. Typically only multiple cores running optimized software that will run through memory making heavy use of the prefetcher will exceed memory bandwidth.