If you have issues with XMP profile. READ!

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   I have an ASrock Z170 Gaming K6, but I've seen this issue reported for other boards as well. If you have purchased DDR3200 or greater RAM, and your system won't boot with the XMP profile enabled, increase VCCIO voltage to 1.10 manually and set VCCSA voltage to 1.15. After doing this you *should* see your RAM working at rated speeds and stable. Hopefully this is helps some frustrated people out there. 

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GripS Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 23 Jan 2016 Status: Offline Points: 21	Post Options Post Reply Quote GripS Report Post Thanks(0) Quote Reply Topic: If you have issues with XMP profile. READ! Posted: 23 Jan 2016 at 8:45am
	I have an ASrock Z170 Gaming K6, but I've seen this issue reported for other boards as well. If you have purchased DDR3200 or greater RAM, and your system won't boot with the XMP profile enabled, increase VCCIO voltage to 1.10 manually and set VCCSA voltage to 1.15. After doing this you should see your RAM working at rated speeds and stable. Hopefully this is helps some frustrated people out there.

parsec Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 04 May 2015 Location: USA Status: Offline Points: 4996	Post Options Post Reply Quote parsec Report Post Thanks(0) Quote Reply Posted: 23 Jan 2016 at 9:59am
	I agree, this is good advice. I use an ASRock Z170 Extreme7+ board, so you can compare yours with mine. The XMP profile for my DDR4 G.SKILL Trident Z 3200 memory sets VCCIO to 1.20V, and VCCSA to 1.25V. The 2133 speed of this memory leaves these at default values, or sets them to: VCCI0 = 0.950V, and VCCSA = 1.050V. Your increases in these voltages are small compared to my XMP profile. I'm not saying your settings are wrong, lower is always preferred for any processor voltage setting IMO. The Settings are one thing, what I'm seeing as the actual voltage is another. Whether or not this is an inaccuracy of the reading, or correct, I don't know. I see the same readings from different tools. This happens regardless of how these options are set, manually or automatically. If VCCIO is set to 0.950V, the VCCIO reading is 0.972V. If VCCIO is set to 1.200V, the VCCIO reading is 1.232V. If VCCSA is set to 1.050V, the VCCSA reading is 1.072V. If VCCSA is set to 1.250V, the VCCSA reading is 1.280V. I could swear the XMP setting is also increasing the PCH +1.0V to 1.12V, from the default 1.000V. I was able to lower the PCH temperature ~7C by reducing it to 1.016V. The actual PCH +1.0V when set to 1.000V is 1.008V. The memory voltage also seems to overshoot its setting in the UEFI. Your board/UEFI may be different, but these voltages may be worth checking after being set.


GripS Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 23 Jan 2016 Status: Offline Points: 21	Post Options Post Reply Quote GripS Report Post Thanks(0) Quote Reply Posted: 23 Jan 2016 at 12:10pm
	Here's what I have: Stock (DDR2133): VCCIO set to 0.950, HW Monitor reading 0.968 VCCSA set to 1.050, HW Monitor reading 1.064 PCH set to 1.00, HW Monitor reading 1.00 XMP Enabled DDR3200 (Reduced to DDR2800 for ability to boot into UEFI): VCCIO set to 1.10, HW Monitor reading 1.128 VCCSA set to 1.20, HW Monitor reading 1.216 PCH set to 1.10, HW Monitor reading 1.104 XMP Enabled DDR3200 + manually adjusting settings: VCCIO set to 1.10(manual), HW Monitor reading 1.128 VCCSA set to 1.15(manual), HW Monitor reading 1.168 PCH set to 1.10(Auto), HW Monitor reading 1.104 Note that by setting VCCIO and VCCSA(to a lower value!) to 1.10 and 1.15 respectively, the system has no issue booting at DDR3200. Prime95 stable as well as Super PI 32m. I've even booted with DDR3200 with VCCIO set to 1.00. Very odd and I expected this to be fixed in the latest BIOS but not the case. I would be curious if anybody with my board that has the same issue can post their results as noted above. It was an adventure getting to this point and I'm stoked my system is stable now with my ram running at it's rated OC speed.

GripS Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 23 Jan 2016 Status: Offline Points: 21	Post Options Post Reply Quote GripS Report Post Thanks(0) Quote Reply Posted: 23 Jan 2016 at 12:19pm
	Also, I'm running G.Skill Trident Z F4-3200C16-8GTZ (2x8GB) in slots A2 and B2. Tested in slots A1 and B1 with the same result.

Tenkei Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 12 Jan 2016 Status: Offline Points: 17	Post Options Post Reply Quote Tenkei Report Post Thanks(0) Quote Reply Posted: 23 Jan 2016 at 1:24pm
	Sharing some results with the Fatal1ty Z170 Gaming k6 motherboard. RAM (XMP enabled): G.Skill Trident Z DIMM Kit 2x8 GB, DDR4-3000, CL-15-16-16-35 (F4-3000C15D-16GTZB) VCCIO: 1.10 VCSSA: 1.10 XMP enabled+manual: DDR4-3466, CL-16-18-18-38 DRAM Voltage: 1.350 (F-Stream reading 1.344-1.352) VCCIO: 1.12 (F-Stream reading 1.136) VCSSA: 1.12 (F-Stream reading 1.144)