OS WONT BOOT with XMP active (HYPERX PREDATOR 2x 8GB 3333MHz)

[Dean72]

Hello guys,

thank you all in advance.

Recently I bought new PC, everything works correctly except my DDR4 memory module (HYPERX PREDATOR 2x 8GB 3333MHz).

Problem is, when I swith to XMP profile in BIOS, system wont boot, or my CPU stays at its default 800Mhz speed and wont moove any higher even when it is under heavy load. I have mother board ROG STRIX Z270G, CPU: Core i7 7700k.

I've already tried to switch jumpers on my MB to get extra voltage for my CPU but it didn't solved my problem. This memory is on the supported vendor list so I don't understand why it causing troubles to run it whit XMP.

I would like to ask you kindly for you advice. Should I wait for new BIOS upgrade (mine is already upgraded to the newest) or switch to another memory module? Or perhaps some manual settings instead of XMP? Thank you for your time.

[Mickou06]

Hi all,
After updating to this bios 0906 I was also unable to boot, I also had PC freeze during Bios / windows startup.
It appeared the XMP profile for my GSkill 3733MHz DDR4 was the culprit.
With the Bios 0801 everything was working like a charm, now I had to select by hand DDR4-3600MHz in the bios to get things work.
This Bios 0906 is crapping the XMP profile settings, while it was perfectly working in the Bios 0801 :mad:

[Klute_Onren]

Mickou06 wrote:
Hi all,
After updating to this bios 0906 I was also unable to boot, I also had PC freeze during Bios / windows startup.
It appeared the XMP profile for my GSkill 3733MHz DDR4 was the culprit.
With the Bios 0801 everything was working like a charm, now I had to select by hand DDR4-3600MHz in the bios to get things work.
This Bios 0906 is crapping the XMP profile settings, while it was perfectly working in the Bios 0801 :mad:

I would suggest learning about overclocking, technically only 2133/2400 are not overclocked. QVL does it's best to make it easier however these are complex and always changing machines. Click and done doesn't really work in the high performance world. Maybe the first XMP preset but if you want to get what your system is easily or not so easily capable of you need to learn more about it. Given set's of ram with the same chip type are all the same, the only difference would be that they have been binned as capable of higher speeds. I have had my go with budget equipment and while I got it to scream for what it was, I can say you get what you pay for (it's all a lottery, higher specs give you an edge). A common misconception is that 4266 memory will work like lego's. While a home built machine is basically adult lego's, it doesn't end at plugging it in. You need to know how to get it to work at that speed. There are diminishing returns on plug and play IE: XMP. The higher you go the more you need to tweak to get it to work.

[Klute_Onren]

I'm glad you sorted it out. I would suggest learning about overclocking before throwing voltage at it. I started an overclocking log, mostly to keep track for myself but also to show what an overclocking run should look like, not to mention getting feed back. In short, the wilder and faster you throw setting's at your rig the less likely you are to achieve a good clock and the more likely you will toast your OS. Frequent reinstall's are no fun. I would find some guides and start there.

[Zka17]

Next time do your homework before updating BIOS...

[SphinxPT]

I'm having the same issue with my 3866 GSkill Trident Z. Tried to downgrade to0801 but my XMP profile states 3868 instead of a 3866 like the memory specifications.

It's really strange because the XMP should do the trick.

Tried to do it manually but couldn't get it to work. Could someone help me?

Thank you

[Klute_Onren]

SphinxPT wrote:
I'm having the same issue with my 3866 GSkill Trident Z. Tried to downgrade to0801 but my XMP profile states 3868 instead of a 3866 like the memory specifications.

It's really strange because the XMP should do the trick.

Tried to do it manually but couldn't get it to work. Could someone help me?

Thank you

I would figure out which chip your stick's have and go from there. The difference between 3866 and 3868 means nothing, slight variances in bclk can change that easily. You need to learn how to adapt on the fly, I've even had my cpu multiplier reported in OS as 175, computers aren't perfect. Like I said find out which chip is on your stick and go from there, the latency should tell which they are.

[SphinxPT]

Klute_Onren wrote:
I would figure out which chip your stick's have and go from there. The difference between 3866 and 3868 means nothing, slight variances in bclk can change that easily. You need to learn how to adapt on the fly, I've even had my cpu multiplier reported in OS as 175, computers aren't perfect. Like I said find out which chip is on your stick and go from there, the latency should tell which they are.

Thank you for you reply!!

The label on the memory states CL 18 -19-19-39 at 1.35v.
What I did in the BIOS was to set:
DRAM Frequency -> 3866Mhz
DRAM Voltage -> 1.35 (BIOS updates to 1.3530 automatically)
DRAM CAS LAtency -> 18
DRAM RAS to CAS Delay -> 19
DRAM RAS ACT Time -> 39
Command Rate -> 2T (on the BIOS I've only something like 2N and not 2T, but I think is the same)

DRAM Pre Time that's a setting I don't have but from some research it's said that it's automatically calculated

Can't figure out what I'm missing. Downgraded from version 0901 to 0801 of BIOs, removed the memory and the motherboard battery for a full reset and nothing worked.

[Klute_Onren]

SphinxPT wrote:
Thank you for you reply!!

The label on the memory states CL 18 -19-19-39 at 1.35v.
What I did in the BIOS was to set:
DRAM Frequency -> 3866Mhz
DRAM Voltage -> 1.35 (BIOS updates to 1.3530 automatically)
DRAM CAS LAtency -> 18
DRAM RAS to CAS Delay -> 19
DRAM RAS ACT Time -> 39
Command Rate -> 2T (on the BIOS I've only something like 2N and not 2T, but I think is the same)

DRAM Pre Time that's a setting I don't have but from some research it's said that it's automatically calculated

Can't figure out what I'm missing. Downgraded from version 0901 to 0801 of BIOs, removed the memory and the motherboard battery for a full reset and nothing worked.

Have you tried changing the VCCIO and system agent voltage? Try both of those at 1.20

[SphinxPT]

Klute_Onren wrote:
Have you tried changing the VCCIO and system agent voltage? Try both of those at 1.20

yes, I've done that also... Couldn't get them to work, system don't boot and I've to turn the PC off.
I can put some prints here of the configurations if that helps. it's really strange because I've followed some tutorials in the forum and nothing works

thank you again for your help

[Klute_Onren]

That's all I had to do to get my trident-z to run at 3600, haven't done anything beyond that for testing or tweaking. The only last thing I did was set the tweak mode but I don't think that your board has that. Maybe going by the spd secondary setting's isn't very happy. Or maybe your memory controller isn't happy. Dunno that's all the further I've gotten on memory overclocking.

random thought's: try a different speed, maybe that divider isn't happy on your memory controller. Try bump each related voltage one at a time by 0.05 You aren't using xmp still are you? Make sure you're in manual mode. You could be right on the brink of running at 100bclk see if you can start at 3600 or even lower to get a feel for making it stable. Ask around or research which chip that is, mine is samsung B-die for reference. Find timing's for lower speed and figure that out first. Try your cpu clock at stock to make sure you aren't stressing the cpu to hard by upping the memory. I remember something about IAC and DC setting but don't remember if that's memory bclk or overal speed.