Just ordered my 1500x, has anyone tried it already? Would be grateful for any information
I'd like to know if you get any benefit from running more than 4 threads on that processor since it should have crosstalk between the CCX's. The Ryzen 5 1400 would also be nice to look at for a mining rig cpu but it would only be able to run 4 threads because of it's L3 cache and in theory it doesn't have the CCX latency issue, which could help with less expensive RAM as well.
That specific thread limitation only applies to cryptonight due to it's specific memory use. Other algos have different
characteristics and limitations.
The modular cache is not an issue for mining because miner threads are pinned to a core. There are only problems if a thread
moves to another core on a different CCX. When this happens there is a double hit because the data on the "from" CCX cache
has to be flushed to memory and then loaded into the "to" CCX cache.
There is a more subtle effect of modular L3 cache affecting shared data. If the same data is accessed from multiple threads
on different CCXs that data needs to be loaded from memory into the cahes of multiple CCXs increasing the memory load.
A thread can't benefit from data cached by another thread. If the data is modified it creates even more memory load as the
modified data needs to be immediately written to memory and all other CCXs that access that data need to reload it.
Anyone get SHA working?
