would I be better to mine 50 x 1Ths miners?
or 1 X 50 Ths miner?
Same hashrate = same chances to find a block, no matter how you split (or not) the hashrate.
Quoting NotFuzzyWarm in another thread:
--snip--
FYI: a block is found by
a single chip in a miner. That's why even a 1-chip stick miner
does occasionally find a block
