This is real CPU mining, meaning the faster the CPU and the more cores it has the better results will be. Also new CPUs have newer instructions sets which are more efficient. Latest generation of Intel and AMD are the best.
Pools are already available and are working pretty fine. The code is not final (and some features will be added with time) but almost 98% of the miners now mine in pools, so this says a lot about the efficiency of the pools.
Is the mining only done by the CPU ? Doesn't the graphic card have any influence on the hashrate that you can reach?