Just curious...I ran the memtest86 rowhammer test on two near-identical machines with Crucial DDR3 modules (2x8GB non-ECC), one with memory made in 2012 and the other made in 2016. The 2016 memory passed; the 2012 memory failed.
(It's possible that other rowhammer tests could give a different result, I'm not suggesting that memtest86 is definitive).
(It's possible that other rowhammer tests could give a different result, I'm not suggesting that memtest86 is definitive).