i was just doing a rough cpu*cycles count. the 264 was from 66 cpu's * 4 cores each. from the dmips specs 1 intel i7 core seems to be about 20x faster then a Cortex-A7, so the system here would be about the same as a workstation with 13 intel i7 cores. the 'about 20x' part is tricky and would likely take testing for a particular application. also speed depends on the bottle neck, the system here has 66 separate paths to 66 separate main memory, and the intel workstation only has 1 (or 2).
That thing is a lot more powerfull then a desktop. I agree it's no super computer, but it does have 264 900MHz Cortex-A7 cores. and woud be a good test bed for bigger 10000+ core systems.