IBM does a little to enhance their x86 line, but I don't think it's of any great value to many customers. If they were making a lot of revenue (not even profit

IBM does a little to enhance their x86 line, but I don't think it's of any great value to many customers. If they were making a lot of revenue (not even profits!) off their value-adding, and this value-adding could be applied to their top-end stuff (thus amortised across a larger base), it would make sense. I'm not an expert in IBM servers, but I don't think they are getting a lot of revenue at the bottom-end as a result of their bells and whistles, and it's probably not that easy to transfer those enhancements to their top-end servers.