I have bought the following components:

 

- Asrock Z170M Extreme4, Intel I7 6700 (non-k), 2 x 8 Gb DDR4 G.Skill RipJaws V 3200 (black), Seasonic G550 Gold.

Win 10 Pro 64.

 

Sometimes I have some blue-Windows screen with programs like 3dmark(11), Firefox etc., so I tried test the system with OCCT Test, configuring it to use large amount of memory and all cores.

In 42-50 sg aprox, the test warning me about a problem/error with a CPU core, and stop the test.

AIDA64 inform me the speed and frequency od DDR4 is 3200 MHz, 16-16-38..all ok.

 

In the BIOS the memory is tweak to XMP Profile 1.

 

I tried to set the memory in BIOS to auto (no XMP profile) and reboot the system.

With this configuration, AIDA64 detects DDR4 freq at 2166 MHz.

With this configuration, I tested the system with OCCT test, and 0 errors/warnings in 10 hours

 

So....whats the problem? Is  it a issue with motherboard? a issue with DDR4 memory?

 

I bought a 3200 DDR4 memory...so I prefer use this freq :-(

 

 

 

 

 

 

- Intel XMP Profile 1 actived (DDR4 3200, 1.35v, 16-18-18-36), passing memtest86 I get 36 errors in a few minutes.

- Stop test and go into BIOS/UEFI: - I keep the memory settings and modify the voltages (VCCSA from 1.05v to 1.20, and VCCIO from 0.95 to 1.20 )

 

With this configuration memtest86 is solid during 15 minutes, but when I inicialize Windows I get black screens.

 

- Go into UEFI and modify settings: DDR4 from 3200 to 2800 and the other parameter to 100( 100, 133 and auto options). Previous voltages to initials settings (1.05 and 1.20). DDR4 voltage from 1.35 to 1.20. Latencys from 16-18-18-36 to 15-15-15-35

 

With this configuration I am running memtest86 and in 8 hours 0 errors.

 

So...the memory is ok?

I have errors with 3200 configuration...so I dont sure

 

If the BCLK is not changing with the XMP profile being set then I am afraid you either have defective RAM (unable to operate at it's rated frequency) or incompatibility with your motherboard.

 

Then...you mean that BCLK DDR4 and BCLK CPU have to be the same in order to work correctly?

 

When I set DDR4 parameter to 100, I only can select from 2133 to 2800 frequencies. Only if I set this parameter to 133 or AUTO I can select 3000+

 

So I have to try to manually set DDR4 (BCLK 133, 3200, 16-18-18-36, 1.35 v) and CPU (BCLK to 133 and multi to 26 for example) it is correct? With CPU voltajes to defect.. 

Other than that I suspect your RAM may be unable to operate at it's rated speed or there is an incompatibility with the motherboard at that frequency. If you try and set the RAM to 133 and a lower frequency does it still fail memtest? By trying this we can rule out either defective RAM or motherboard incompatibility. If it operates without error at 133 with a speed lower than 3200 then it is very likely that the RAM is faulty, if it causes errors even at the lower frequency then the odds are in favor of incompatibility with the motherboard.

On a side note, Skylake CPUs have the functionality of having BCLK completely independent of PCIe and other key motherboard features which intel claims will allowe the BCLK to be increased in 1mhz intervals without the loss of stability. As I type this I realize my info was not accurate in my last post. The issue I outlined was exclusive to the socket 2011 v3 platform as it did not separate the BCLK and core RAM frequency the way skylake does. I apologize if this caused any confusion.

Previously all intel CPUs were only able to operate at preset BCLK frequencies without causing instability. These frequencies were  called "straps" and allowed a degree of overclocking in non-K CPUs, however, even increasing the BCLK to the lowest strap over 100mhz (120mhz) would prove too much of an overclock and cause instant BSODs or failure to post. With Skylake you can set the BCLK to 109 for example and retain stability, while on previous generations you could only get away with a 3 - 5 mhz BCLK increase at most. I say all this in-case the prospect of some light overclocking appeals to you. In theory you should be able to set your BCLK higher then lower your multiplier until you achieve stability. Unfortunately this will not effect RAM speed.

Ups... I cant run the test because I can not find the option to change the CPU multiplier.

I have only option to change the BCLK frequency. If I set this to 133...the CPU speed increases a lot, it is impossible for my CPU.

I tried change VCCSA voltage from 1.05 to 1.20, and the system is more stable with XMP2 profile1 (3200)...but I get 1 error passing Prime25 test.

In 20 minutes OCCT...0 errors, and in 20 minutes Memetest86 test...0 errors.

I dont know...which is the utility of this voltage?

Where is the CPU multiplier in this motherboard??

You may also want to check and see if you have the latest BIOS update for your board. It may improve RAM compatibility. From the description it also adds DDR4 overclocking which may help you achieve your RAM's rated clocks more easily.

I have just the previous one (1.30) non-beta.

This versión beta  1.32 only includes a new logo???

If I have problems with beta versión.. could I instal the previous bios 1.30?

Yes, but the system is very unstable...blue screens in Windows all time.

I reverted to 1.30 BIOS and 2800 spped :-(

Remember to clear CMOS when you switch slots.

I tried to change the modules to A1 and B1 slots, but I had problems with boot....anywhere I didnt clear the CMOS with the change.

 

I will try A1-B1 configuration and clear the CMOS :-)

 

 

No advances here :-(

I changed the modules to A1-B1 slots...the system appears more stable, but finally I got error in 20 minutes in OCCT test

I tried to test the modules separately (3200 16-18-18-38 1.35v) ...one module in A1 slot and several test....in this way I didnt got errors in 30 minutes test.

Same with the other....no errors in 30 minutes. So, separately they Works at 3200 XMP2.0 Profile1 configuration....together only Works up to 2800 15-15-15-35

I dont understand the problem...it will be because my CPU has some limitation being non-k (i7 6700)??