Z370 Professional I7 4266 RAM

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   So I have bought a Fatal1ty Z370 Professional Gaming i7 from 
Newegg, and it seems that Dram A2 does not boot into proper speeds of 
ram (4266). I have 
G.SKILL TridentZ RGB Series F4-4266C19D-16GTZR
 . I have tried both sticks on Dram A2 and they do not boot, I have also
 tried both sticks on B2 and they boot into speed perfectly. The way I 
configured the ram to boot into windows at those speeds is, I first put 
Voltage in OC mode, then I went into Dram configuration and tweaked 
timing with Dram tweaker, then I manually set Dram Frequency at 4266. 
Doing these steps worked perfectly. Setting XMP profile would not Boot 
into windows when I tried single stick on A2 or B2 Dram slots. That is 
another problem I have been encountering that XMP would not boot into 
windows and I have to do it manually. After heavy testing I know that 
Dram A2 has a problem booting into high frequency. 

So how is it that I stick 1 stick on B2 and it boots perfectly fine, but when I put 1 stick in A2 it does not boot into windows. I have tried both stick on A2 and B2, but XMP or manual input would not boot. maybe it has to do with Voltage, I have not messed with voltage so can someone please tell me their settings with this Motherboard and Ram sticks. Thanx 

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VaheArmen Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 20 Apr 2018 Status: Offline Points: 16	Post Options Post Reply Quote VaheArmen Report Post Thanks(0) Quote Reply Topic: Z370 Professional I7 4266 RAM Posted: 27 Apr 2018 at 9:39am
	So I have bought a Fatal1ty Z370 Professional Gaming i7 from Newegg, and it seems that Dram A2 does not boot into proper speeds of ram (4266). I have G.SKILL TridentZ RGB Series F4-4266C19D-16GTZR . I have tried both sticks on Dram A2 and they do not boot, I have also tried both sticks on B2 and they boot into speed perfectly. The way I configured the ram to boot into windows at those speeds is, I first put Voltage in OC mode, then I went into Dram configuration and tweaked timing with Dram tweaker, then I manually set Dram Frequency at 4266. Doing these steps worked perfectly. Setting XMP profile would not Boot into windows when I tried single stick on A2 or B2 Dram slots. That is another problem I have been encountering that XMP would not boot into windows and I have to do it manually. After heavy testing I know that Dram A2 has a problem booting into high frequency. So how is it that I stick 1 stick on B2 and it boots perfectly fine, but when I put 1 stick in A2 it does not boot into windows. I have tried both stick on A2 and B2, but XMP or manual input would not boot. maybe it has to do with Voltage, I have not messed with voltage so can someone please tell me their settings with this Motherboard and Ram sticks. Thanx

VaheArmen Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 20 Apr 2018 Status: Offline Points: 16	Post Options Post Reply Quote VaheArmen Report Post Thanks(0) Quote Reply Posted: 27 Apr 2018 at 5:41pm
	Hey guys I got the ram to work. both sticks at 4267 with xmp on. I adjusted the VCCIO and VCCSA. I was wondering is it okay if the VCCIO is at 1.320 and the VCCSA is at 1.200. are those okay voltages for the computer to be running around 8 hours a day?

VaheArmen Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 20 Apr 2018 Status: Offline Points: 16	Post Options Post Reply Quote VaheArmen Report Post Thanks(0) Quote Reply Posted: 27 Apr 2018 at 6:17pm
	i actually got VCCIO to 1.200 and VCCSA to 1.250 are these okay? seem to work fine under stress test with no crash or freezing

VaheArmen Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 20 Apr 2018 Status: Offline Points: 16	Post Options Post Reply Quote VaheArmen Report Post Thanks(0) Quote Reply Posted: 27 Apr 2018 at 7:54pm
	Sorry guys the system was actually unstable with those Voltages. This is a final update with running prime95 for a hour. Vccio i set to 1.350 and VCCSA is at 1.250 . XMP enabled 4266 Speeds :) let me know what you think about the voltages. are they safe? i mean the computer would not boot without these voltages.

Lou2k7 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 01 Feb 2019 Location: michigan Status: Offline Points: 1	Post Options Post Reply Quote Lou2k7 Report Post Thanks(0) Quote Reply Posted: 01 Feb 2019 at 6:24am
	Hi are your setting working? Any more information you can give me? I got 2 kits of F4-4266C19D-16GTZA. i can get a combination of 2 to work at 4266 (if i use A2 and b2). If i use a1 and b1 only 2133, if i put in all 4, i only get 2133 also. thanks for any suggestions