That being said, your organization's problem isn't AMD vs Intel, your problem is Oracle. If your org spent the money you currently spend on Oracle licenses on a bestial monstrosity of a I AM BECOME DEATH DESTROYER OF WORLDS machine running postgres you'd have better performance. Regardless of whether it's AMD or Intel. (although you're probably better off with AMD)
I know it's not that simple. Just sayin'. Making sure HN meets its daily Oracle hate quota. Seriously though, Oracle sucks.
IMO we'll see the bigger hosting players (Google, Amazon etc.) offer competitive prices on their many-core plans and sooner or later the other players will either have to relax their prices or start losing even more customers to the cloud offerings.
I could be wrong though. Many customers are hell-bent to never host in the cloud and I'm pretty sure that decision makes total sense in their context.
We'll see how things shake out but as a programmer I am seeing a slow but steady shift to making the software (languages and frameworks) multicore-friendly. It's happening with a glacial pace but it does happen.