The new E5-2600 also features a high-speed bi-directional ring encircling its up to eight cores per socket connecting up to 20 Mbytes of cache, quad DDR3 memory controllers and 40-lanes of PCI-Express 3 for input/output (I/O).
Further Reading: http://www.eetimes.com/electronics-news/4237522/-Intel-rolls-first-processor-optimized-for-datacenters