Figuring out G.Skill's SNs

[AlleyViper]

A friend of mine received from RMA a f3-12800cl8d-gbrm kit (2x2GB rated 1600 8-8-8-24 1.60V), because the previous one (BxSE) ended up having a consistent faulty address (at any settings) that hci memtest wouldn't always pick up unlike memtest86 under DOS due to full cover.

Now, this serial starts with 13431200 (2013 Oct on hologram) which seems to be PSC on the list (x200?), but these sticks are single sided, with 8 ICs each.
They seem really bad compared to the previous kit. I don't know what ICs are under the spreaders. My testing was very limited as there were meant for a stock 955C2 under a M4A89GTD PRO (this same C2 could run 2x4GB 1600 7-7-7 D9Qxx without a problem at 1.50V).

1600 8-8-8-24 1T 1.60V - the rated timings are fine
1600 CL7 always fails, can't even POST at 7-7-7, 7-8-7 or 7-8-8 2T with 1.60 or 1.65V.
1333 CL6 6-6-6-24 1.65V fails to boot windows, and craps out in memtest86 immediately.