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6900K wont pass 3.7Ghz no matter what.

Nicklas0912
Level 7
Hello.

i run with a 6900K and a Asus Rampage V Extreme, if I set the cpu to 100x37 = 1.0 vcore, it will boot and is stabil, if I sæt it to 100x40 / with same volt, it wont start, but with 1.150 it will.

But now the real problem come, no matter what I do, it wont pass the 3.7Ghz in "CPU-z and Ai STUIDE" just show 100x37 all the time, even under load.

last time I had this problem, I fixed it with a bios, but cant get any other cause only this one support 6900k 🙂

Any ideas what it could be?

Max temps is 40c, with 2x 360 Radiator and 1x 140mm radiator.

Thanks 🙂

[EVEN with stardard settings i bios, it show 3.7Ghz in Windows/Underload]
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7 REPLIES 7

drop4205
Level 12
Oc thru bios not thru ai suite
Maximus XI Formula, I9-9900k, Phantex Evolove X, Seasonic Titanium 850W, Custom loop PE360+SE360 Rad, G.Skill Trident Z F4-3200C14 32g, Nvidia Reference RTX 2080 TI, Samsung 970 EVO Plus 1Tb, Windows 11

drop4205 wrote:
Oc thru bios not thru ai suite


Somehow it flashed the bios 3009, even when I downlaode 3103, så I update bios again, and now it works.

57554

Qwinn
Level 11
Huh. More evidence for the "flash 30xx twice" advice I've been giving.

Qwinn wrote:
Huh. More evidence for the "flash 30xx twice" advice I've been giving.

Is the dual bios arrangement outsmarting us and reverting? I haven't had any issue with this.

cekim wrote:
Is the dual bios arrangement outsmarting us and reverting? I haven't had any issue with this.


I have no idea why it did it.

But is fixed. and im just happy.

I’m having this same issue myself with the Rampage V Edition 10.
I had a 6900k happily running @4.4Ghz on bios 1801, then I made the horrible mistake of flashing to 1902 and just like you, no matter what I do in the bios, cpuz keeps showing 3.7Ghz when I get into Win10.
Windows 10 itself has never given me the correct speed, but cpuz and hwmonitor always have. But no matter what I set my multiplier to in the bios (x40, x42, x44) it shows up fine in the bios, but once I’m in windows it’s right back to showing at x37.
I went back to bios 1801 and it didn’t fix it, so I switched to the second bios (which had bios 502) and flashed that to 1801... still didn’t work.

I’m done banging my head against a wall for now... but when I get back on I’ll try to refladh the bios to 1801 twice in a row and see if that does anything.

Before I gave up I decided to try running memtest86 on a usb stick, and it did indeed show that my boost clock was set to 4400mhz.
So what I’m thinking is that somewhere between the bios and windows, turbo boost is being ignored or disabled in some way.

This $1000 cpu is pretty much a piece of garbage at this point. 3.7Ghz is crap. *

HiVizMan
Level 40
Suspect your system has fallen foul of the Windows 1803 update mate. There are a couple of threads here how to fix that.
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