My RAM keeps dying

[FRISH]

System:
I5 3570k
Z77x-ud5h rev 1.0
v850 Cooler Master PSU
2 sets of 2x4GB (16GB total) Corsair vengeance DDR3 1600MHz RAM (it was slightly cheaper than a single set which at the same I thought would be the better choice)
GTX 970

The system is non overclocked, although I did briefly try overclocking the CPU at some point down the line (nothing drastic), but thermals weren't great on load and didn't seem stable enough.

So I've been getting BSODs (usually mentions ntoskrnl which tends to be memory or driver related) ever since I built the system. I did build on carpet which my PC is on, but I do tend to use an anti static wrist strap when working on my PC since I'm self conscious about it. When I first got a bsod I managed to test my RAM in memtest, found a fault and returned it. At some point I also tested the RAM in different DIMMs to make sure the module was faulty. I also kept seeming to get BSoDs with both sets of RAM when testing only 1 set at a time. At this point I seem to have now have had 4 sets of RAM that have failed in memtest and it has to be more than bad luck. The BSoDs could happen 1 week later or as long as about 7 weeks. I've done passes overnight with RAM that have come out clean for around 10 passes, then maybe down the track I'd test again and there comes up a fault shown in memtest.

It seems like it's pretty much past actually sorting out the issue since the warranties are all up, but I would like to know of likely cause as the system is starting to age so I might wait until maybe Ryzen 2 next year (I'm not in a rush, it's just a bit inconvenient). The PSU and GPU did come a couple of years from the original build. Though my previous and first build also had an issue with RAM, but after the replacement I had no further issues. In some ways I wonder if I should make sure not to build another PC, but then I wonder if it really is me because I can't imagine installing RAM is something that is easy to mess up. There was one mistake I made in the original build where the CPU heatsink fan wasn't properly connected so it turned off instantly, but I'd hope that wouldn't cause lasting damage.

One last thing is that the usb 2.0 ports on the case (enthoo pro) no longer work, I'm not sure if that could be a symptom of anything or not. The USB 3.0 ports seem to work fine. I did have to disable usb selective suspension a while back since using the ports seemed to disconnect and reconnect my xbox controller for example at random periods. The rarity of the BSODs have meant that it's not super disruptive, but also inconvenient to diagnose. I've had all sorts of theories of the issues that seemed to come up short.

[blueball]

May be an issue with the motherboard struggling to support 4 sticks of RAM, a common problem. Try two sticks and see if the problem goes away, if it does then you might need to buy 2x8Gb rather than 4x4Gb

[kalniel]

Have you updated the BIOS? As above, 4 sticks is sometimes a struggle so you may need to drop timings down a bit (certainly go to 2T for eg.) and bump the voltage for the RAM and importantly RAM controller on the CPU.

[FRISH]

Bios is up to date on the latest stable release (2012), though I haven't tried the beta versions. I also did test a while back using just one set of ram (and also swapped out for the other set) and those both seemed to produce a BSoD of the same frequency with 1 stick out of the 2 sets failing the memtest, although one of those sets did get replaced eventually. There was a time where I tested bumping up the voltage by a small amount from what a corsair rep mentioned to someone with a similar issue of the same RAM, though I haven't tried adjusting timings, it did already auto the command rate to 2T, is it a better idea to manually set it to those timings or does it function similarly? So far I set it to 9-9-9-24 2T with +0.05V so far (I'll also mention that it was already only set at 1333MHz), I haven't done anything with the RAM controller, would I just increase core vtt a similar amount? My bios tweaking is a little limited since I've not really wanted to play around too much. One interesting thing was that while the basic timings were the same for both channels, the advanced timings had some differences, not sure if that means anything.

Admittedly the latest ram test was only testing all 4 sticks at once, though there were still 3 sets previously that were tested either as a set of two or as one.

Thanks for the comments. My biggest concern would be to make sure future builds also don't suffer.