Yes but that's not what an x4600 is. It is 32 x86 cores and 256G of main memory (and various other bits and pieces like quad gigE and a few disks) and it fits neatly into only 4U of rackspace. Sun makes x86 kit now, didn't you know?
I don't think you addressed his point, which is that you can get the same amount of work done without 32 cores in 4RU by selecting a different, more cost-effective vendor.
Sun does have a slight but well-earned reputation as vanity hardware.
