It's not about favorability, it's that the K on your processor is an unlocked processor meaning it can be overclocked but Intel have designed the H series chipset to prevent users from overclocking. Think of it as a no frill kind of a motherboard, or rather something that goes inside an HTPC and doesn't need to be overclocked. You could source one off Ebay, though reliability will be scanty.
I'm sorry but I'm not an advocate of suggesting a PSU that is to it's limits with a system. I prefer suggesting units with a little more wattage in order for OP to hold onto the PSU as long as possible. If you've followed through our build guides, you'll know that we suggest a case and PSU in such a way that it can last you a good 3-4 builds...