When I buy a large batch of RAM from eBay, I immediately test them with memtest86+ in a test system with 16x DIMM slots. It takes about 12+ hours to complete test to 100% for 256GB of RAM. I'm beginning to wonder if it is worth the effort and energy? Would I not catch 99.9% of any problems with say the first hour or 2 of running memtest86+? The last few test patterns in memtest86+ also seem to be really slow... just wondering what your guys' thoughts are on this? anyone looked at the cost / benefit analysis of running memtest to 100% vs. 50% or something like that?