Hello, I'm new here. Anyway, so I have this ram kit here (4 kits), and Maximus XI Hero, and it won't run at its rated 4000mhz cl19 speed when all 4 slots are filled.
My cpu is a [email protected]
,9 with offset voltage +0,005 and LLC4, cache is at 46x. The ram's behaviour is the same on both stock and overclocks on the cpu, so I don't think cpu oc is the issue.
The ram kit above is QVL supported by XI Hero on 1,2 and 4 dimm configurations. However, when all 4 dimms are active, ram won't do [email protected]
In fact, it's so bad, even the RAW MHZ profile won't work on ANY vccsa/io levels up to 1.35 on both, and dram up to 1.5v. I don't know why it'd error out like that because JEDEC speed as well as the second XMP profile which is [email protected]
definitely works, at around 1.15V on both VCCSA and IO. I didn't test them at voltages lower than 1.15, maybe they'll even work then. So they CAN work with all 4 slots filled up to 3600 but not at 4000. In fact, I remember trying 4000mhz XMP profile on lower speeds such as [email protected]
21 21 42 and I remember those settings not being stable as well. Why would the board lock itself past 3600 when 4 slots are filled? The thing is, the rams are great. At least I think they are. I bought 2x8 first and overclocked them to 4000 XMP with no issues. It will even do 4266 with voltage adjustments, I figured since this is a T topology board, rams will overclock better if I added 2 more. I tested the new 2 kits on their own, and they can also go to 4000, even 4266. But when I combine all of them, memory errors in windows occurs, passmark hammer test fails, hci memtest fails, merely downloading a file through google chrome creates problems on XMP at even ridiculous voltage levels let alone normal levels.
I must say, this has been bugging me for a month and I'm at the end of my rope. I know the speeds can be done because 2x sticks work and 4x sticks post, go into windows but create problems/corruptions in my OS. So something needs to be tuned probably. I know next to nothing about secondary-tertiary and RTL-IO latency timings so on all of my tests I left them on auto. I also didn't touch memory training algorithms, so they are as is, as well. Maybe I should enable all of the training algorithms and then the motherboard will figure out the rest of the timings? Or do I need to do manual adjustment on tertiaries/RTLs? I have no idea, which is why I need help on this from someone expert on timings. Thanks for reading.