why is intel's interconnect speed slow?

The bandwidth of Intel's hub interconnect is only 266MB/sec whereas other chipsets have bandwidths between 500 and 1000MB/sec. Is there a reason why Intel's is so slow compared to the others? Do other manufacturers just make their interconnects much faster than they have to be?

It's a good question. Maybe Intel didn't really think we needed more than 266MB/s until now? However, with the Springdale/Canterwood launch we'll finally see hub link 2.0 - 1066MB/s. Also, we get CSA (Communications Streaming Architecture) - which gives Gigabit ethernet it's own dedicated link to the GMCH (Northbridge) and doesn't use any of that 1066MB/s hub link bandwidth. Intel claims that CSA boosts GbE throughput from 0.93Gb/s to 1.675Gb/s - not too shabby.