Maximum PC: Little by little, we're seeing memory makers push the envelope in mobile and small form factor (SFF) setups by introducing high-performance SO-DIMM RAM. So it goes with G.Skill, which claims its latest Ripjaws are the industry's first DDR3L SO-DIMM clocked at a blistering fast 2133MHz. Not only is this a high-performance memory kit, it's also available in large capacities, up to 32GB (4x8GB).