The socket 1156 Lynnfield processors are based on the same design as their socket 1366 predecessors, but with a dual-channel memory controller rather than triple. In practice that has very little impact on performance, but it does mean they max-out at a smaller amount of total memory: 16GB, on current motherboards. Just like the larger processors these quad-core chips support Turbo Boost and Hyper-Threading for improved performance (with exception of the Core i5 model, which does not have Hyper-Threading).