— Since 2012 I use this processor that is not K in a stable frequency of 4.2 Ghz, it opens everything very fast with 16 GB RAM at 2400 Mhz and I configured the Bios to put an M.2 adapter in it with an M.2 Samsung Evo 970 read and writes at 1500MB / s to a P8Z77-V LE PLUS board.
can be overclocked to 4.1-4.2-4.3 Mhz without spendind a lot, yet 3 years old and not so far form the best actual cpu!—Aug '15
CPU