• Happy holidays, folks! Thanks to each and every one of you for being part of the Tom's Hardware community!

Can intel i7 6700k run 2800mhz ram with mobo Z170 PRO GAMING, Socket LGA1151

ivanstst

Commendable
Oct 7, 2016
3
0
1,510
Hello, I am building a new PC and today came all of the parts,

MOBO: Z170 PRO GAMING, Socket LGA1151.
RAM:2x ADATA XPG Z1 16GB (2 x 8GB) 288-Pin DDR4 SDRAM DDR4 2800 (PC4 22400) Desktop Memory Model AX4U2800W8G17-DRZ.
CPU: Intel Core i7-6700K 8M Skylake Quad-Core 4.0 GHz LGA 1151 91W BX80662I76700K .
PSU: EVGA 600W
SSD: ADATA SP550 2.5" 480GB SATA 3 ASP550SS3-480GM-C.
HDD: TOSHIBA 3.5/2.TB/ SATA3
GPU:GEFORCE GTX 1080 EVGA.

So i plugged in everything and powered on my pc but It didn't boot it made beeping sounds, and than i checked if the problem was from the video card and removed it, reboot it than it beeped the same way short beep 5 times and it shutdown itself, next i thought it can be from the HDD or SSD, so i removed them one by one and tested if it worked, but it still made the same beep. next i removed the CPU but without it it made a different beeping sound, so i plugged it in again, next i checked in the internet what that beeping sound meant and it seemed that it was Memory Refresh Failure. What i did next was to unplug 2 of the 4 ram sticks and reboot it. This time my pc ran but the memory was at 2133 and it should have been 2800hz, what i checked next that i had to run the ram in XMP mode,So i did in the bios and channel B memory bus had its timings set but channel A there were none even though they were set in XMP mode. So i restarted my PC again to try with 4 sticks of ram but still i had the previous error with the beeps, than i manually set in the BIOS the settings of memory buss A like the memory buss B but still had no success.

So does anyone know how to fix this?
Thanks in advance for anyone who will try to help.
 
Solution
You wrote that you have Z170 Pro Gaming and that is Asus.
Link: https://www.asus.com/Motherboards/Z170-PRO-GAMING/
If you have Gigabyte then it's Z170X Gaming 7.
link: http://www.gigabyte.com/products/product-page.aspx?pid=5481#ov
Completely different name between those two MoBos.

Either way,
your first order of business is to clear the CMOS.
MoBo manual, page 23, Quick buttons, CMOS_SW.
link: http://download.gigabyte.eu/FileList/Manual/mb_manual_ga-z170x-gaming7_e.pdf
If the button doesn't work, locate the CMOS jumper (page 26, 18.CLR_CMOS) and use that. If that too fails, remove the CMOS battery and wait about 15mins.

Next, that test if all 4 RAM sticks do work in 2133 Mhz. After you get all 4 working at 2133 Mhz, then you can OC...
According to your MoBo manufacturer's website (at Memory/Device Support) your MoBo supports running this very specific RAM only by using it in one RAM slot (1 DIMM) or in two RAM slots (2 DIMM). There is no support for using it in all 4 slots (4 DIMM).

Scroll down to a "DDR4 2800 Qualified Vendors List (QVL)" and see it by yourself.
link: http://dlcdnet.asus.com/pub/ASUS/mb/LGA1151/Z170-K/Z170_DDR4_4DIMM_memory_QVL_report160829.pdf?_ga=1.26216637.1684223828.1473432011

Only thing to do now is to return one of the 2x 8GB set and buy another 2x 8GB set while looking the correct RAM from that list.
 


I forgot to mention that the MoBo manufacturer is GIGABYTE, according to gigabytes memory supportt list:
http://download.gigabyte.eu/FileList/Memory/mb_memory_ga-z170x-gaming7.pdf
the MoBo should support 4 sticks of 8gb ram at 2800mhz
 
You wrote that you have Z170 Pro Gaming and that is Asus.
Link: https://www.asus.com/Motherboards/Z170-PRO-GAMING/
If you have Gigabyte then it's Z170X Gaming 7.
link: http://www.gigabyte.com/products/product-page.aspx?pid=5481#ov
Completely different name between those two MoBos.

Either way,
your first order of business is to clear the CMOS.
MoBo manual, page 23, Quick buttons, CMOS_SW.
link: http://download.gigabyte.eu/FileList/Manual/mb_manual_ga-z170x-gaming7_e.pdf
If the button doesn't work, locate the CMOS jumper (page 26, 18.CLR_CMOS) and use that. If that too fails, remove the CMOS battery and wait about 15mins.

Next, that test if all 4 RAM sticks do work in 2133 Mhz. After you get all 4 working at 2133 Mhz, then you can OC them to 2800 Mhz.

Here's how.
Take the 1st set (2x 8GB) and mount into slots DDR4_1 and DDR4_2, leaving other 2 slots free. Boot up and check the BIOS to see if RAM is present.
After that, shut down and remount that same 2x 8GB set to slots DDR4_3 and DDR4_4, leaving other 2 slots free. Another boot up and BIOS check. If everything is working then shut down and repeat the same process with 2nd set of 2x 8GB.
This way you can test if all 4 sticks do work in pairs in every slot.

If you put all 4 sticks into the MoBo and get the beeping, check your MoBo Debug LED code (located in the upper right corner, next to RAM slots).
 
Solution
Thanks for your help, i gave it to It repair guy and it turned out that 6 of the pins in the MoBo CPU socket were bent and that how stopped the work of the other 2 ram sockets.The repair guy straightened them with a needle and all workout.