My CPU officially needs a spot of LLC to be fully stable now. Never overclocked except for running PBO for a while, no manual fuckery otherwise. It's about 5 years old and has seen a lot of use.
I don't know exactly how much extra voltage is going in but if it gets unstable again at these settings, I might have to call it there. Here's to another 3+ years at least.
really fucking happy if this fully fixes it though, I thought I was going to have to buy a new cpu or motherboard to sort it out, which I'd really rather not do
Passed 10 loops of ycruncher, which it has consistently failed for as long as I've been using ycruncher as a stability test, so guess that's a win.
By the way, ycruncher is GREAT for that. It fails much faster and much more consistently on unstable systems than memtest86 or memtester (in linux) do. It should also pull up the occasional rare issue that only manifests when the CPU is under load during memory testing.
I find both the "Benchmark Pi" and "Component Stress Tester" tests work well for this. The latter will usually fail in a specific test and you should be able to re-create the crash that way.