At this point, each DIMM should be physically labeled (a sticker works well) to identify the slot it belongs in keeping a log of the lowest voltages for each and the parameters used for this test is very useful if long-term damage is suspected somewhere down the line.
This last check should be performed even for a configuration that is restricted to an already-purchased kit.
The modules that pass with the lowest voltage are the best pieces of silicon.Īfter the best modules are selected, each is rotated into each DIMM slot on the motherboard and tested again to find which specific module performs best in which position. The testing/selection procedure for this portion involves placing the modules (one at a time) in the same DIMM slot with the same memory parameters, and finding the modules that run benchmarks consistently (SuperPi 32m is recommended here) with the lowest DRAM voltage possible. Given how relatively inexpensive memory can be, serious overclockers generally purchase multiple kits, test each module, and select the best. Multiple memory packages can all have the same memory module inside, and there are chip-to-chip differences between ICs, even if the batch-number (when available) is the same.
