Very few do it. But I only want the best its a simple way. Have two profiles one with stock volts but high LLC and 50 Ratio DDR1600 9-9-9-24 Stock IMC volts etc. Try boot windows. If it boots into windows 7 = winner for frequency!!!
Second profile stock frequency but ddr2800 timings 12-14-14-36 2T, Observe post code display iit styops on 23,01,00,03 the IMC is incapable of 2800. You get boot or 55 your good to go with 2800.
Best chips past both!!!
Test on LN2.
A similar method works when binning Haswell also. How else can you test high volume and get only the best unless you have tough credentials for the great ones to pass.