z170 Extreme 7+ and Trident z 3200 o/c

Running 3466 now, seems Ok so far, not tested yet.

Set VCCIO to Auto, and I'm looking at 0.976V in HWiNFO right now! How can that be?

Question for you, how does the 3.00 UEFI seem for you regarding the freezing issue that can happen?

For me it seems better, possibly not perfect since I had a... hesitation I'll call it. I was moving around the UEFI screens and it seemed to freeze. But in a few seconds it responded, and I finished and exited fine.

It seems the freezes happen, for me at least, in two situations:

After adjusting a memory setting in DRAM Configuration, that is an OC or not stock/Auto value. That is of course before it is actually applied by a Save and Exit. Are memory settings applied immediately in the UEFI now? Very strange if true, I doubt it.

Moving around the UEFI screens very quickly. If I take my time, I have no problems.

Could be worthless observations, but that's what my experience is.

The PC may have booted with VCCIO at 0.976, but Firefox crashed on me when posting in this forum. So no way that can I run at 3466 with that VCCIO. Set it to 1.128V (actual) for now, survived a stress test. So no, not a special RAM kit, yours should have better chips.

The G.SKILL GTZ TridentZ models are more pricey than the GTZB model I have. Not by much anymore, due to Newegg's crazy pricing, but that model (GTZ) should be better.

My OC is 4.5GHz now, on an i5-6600K. Just using Auto (adaptive) voltage I'm at about 1.25V during stress tests. Cache is on stock (3.9GHz) for now, but I've had it higher in the past.

Really, never had a freezing/pausing issue in the UEFI? We see a fair amount of complaints about that with Skylake boards. Several different models. I've had it myself. Interesting, I wonder what the cause might be? What kind of mouse and keyboard do you use? Wired or wireless?

I've seen the UEFIs of some recent Asus boards. I'm surprised you say there aren't many missing features in our UEFIs. But I'm referring to the endless UEFI options those boards have, which IMO at least some are there only to make it appear to be sophisticated.

I helped a guy disable CSM on a ROG board, which I thought to myself at first, "come on, it's one option setting", like it is in every ASRock UEFI I've ever used (many!) I could not believe the nonsense it took to get CSM disabled in that UEFI. Cannot even remember all that had to be done.

Or options for versions of Windows? If there are underlying UEFI settings needed for an OS, fine, but why make us set them? What good does it do to be able to not enable something needed for an OS version?

But I also saw some options that would be nice to have. ASRock tends to put those only on boards that really ought to have them, like the OC Formula boards. Different philosophies of design, overall.

The secure erase (SE) feature is nice, I will give you that. I use mainly Intel and Samsung SSDs, and their SSD tools work pretty easily to perform an SE. Other SSDs have tools too, but to be able to do it in the UEFI on any SSD is a great feature. Did it let you SE an OS drive? I could see the usefulness of that, for installing an OS fresh on a SSD that just was SE.

I've been using Firefox for ages but recently it's started pausing, having difficulty with certain forum sites and distorting the desktop when playing embedded YouTube videos if I change the default video card memory settings! This behaviour doesn't happen in Chrome. Firefox is not what it used to be.

For final stability testing I always use Realbench 2.34 stress test and three loops of benchmark.