Krzych

Getting issues again, XMP won't boot. I am done. I will order different sticks and if there will be everything okay then I will try to get my money back from Corsair or the shop I bought current sticks in.

I have tried even without CPU overclock and memory is till throwing errors at 3000, unless all voltages are fixed through Fully Manual Mode in BIOS. I have tried different BIOS versions yesterday and it doesn't help. This memory is just bad. I have tried 2750MHz yesterday and it works without all of this fixing. So getting 2750 MHz with as low timings as possible vs 3000 MHz is some alternative, 2750 13-15-15 should perform very similarly to 3000 14-16-16 Looks like this memory is not really working on advertised speeds unless it is strictly tweaked on each mobo exclusively. It was the cheapest from the stack so I cannot really complain, but generally quality is very questionable.

The board said to stay at 1.95 max to daily use so I did and focused on tweaking other voltages. I saw VCCIN helping a lot on MSI so I just kept it high for now. The settings are posted for 4.5 Core 4.5 Cache clocks on my 5960X, 1.22 and 1.3V respectively. I can go higher with core but my cooling in not sufficient above 1.3V on the core (H115i), at least not in summer. Since I have to use Fully Manual Mode in BIOS to get stable with memory and it allows only manual voltages without adaptive mode I have backed my cache to 4.0 and I am now focusing on lowering all voltages. No point on maxing things out until I get custom loop and can really overclock this CPU to max potential. This memory is really strange. Without XMP it boots only up to 2400 MHz regardless of voltages and with 100:133 memory BCLK it will boot with 3200 but throw errors. With XMP, it boots at 2000, 2750, 3000 and 3333. It won't boot on for example 3250 but will boot on 3333. Crazy things going on. I have found my stable settings so at least I have something to go back to for full stability and I will try to tweak this memory further. Interesting stuff and since I found a solution this is no longer annoying, only a challenge remains :) Not the best solution because of fixed voltages on the core and cache, but at least it works.

Interesting thread. I was having similar issues with 3000 MHz 15-17-17-35 kit (CMK16GX4M4B3000C15) on both MSI X99 SLI and Asus X99 Sabretooth motherboards. On MSI it was sometimes working and sometimes not, like many people said here, sometimes boots sometimes not. On Sabretooth I was always booting with XMP, but I was getting instant errors with all tests like, AIDA, OCCT or MemTest86. I have tweaked my way out of that somehow, but to this day I cannot boot if those values are set manually, even though identical as XMP, it has to be XMP otherwise I won't boot with anything more than 2400 MHz. This memory really gave me trouble and two nights of tweaking. It turns about that this X99A SLI mobo wasn't bad, it was memory. Although I don't regret returning it and getting Sabretooth, this is amazing mobo. I still don't quite understand what is going on with the memory. On MSI it wasn't fixable, on Asus basically only setting Fully Manual Mode to Enable helped definitively, even though all the voltages are identical to ones set with this mode disabled. Anyway, my settings in case someone reads this thread with the same issues on the same mobo: XMP Fully Manual Mode - Enabled VCSAA - 1.178 (1.84 effective) VCCIN - 1.95 (1.984 max effective) DRAM - 1.33 (1.356 effective) Timings 14-16-16-34-2T