Asus Maximus XII Extreme 4266MHz RAM works bad...

[Mappi75]

Hello,

i own this memory kit:
G.Skill 32GB 4.266Mhz CL17

This kit never worked at full speed - the max i got was 4.100Mhz 16-16-36 (GSAT & HCI stable)
on two 9900KS on 2 maximus XI Extreme

Now i got 2x Maximus XII Extreme and 2x 10900K (SP100 & SP110)
And on both this kit works bad... max 3.900mhz CL16 is now stable (not 100% sure)

Is this Board training something so GSAT wont run stable?

BTW: i got a MSI Z490 Godlike and this Kit runs perfect GSAT & HCI MemTest stable (each 12 hours runs)
only with VCCIO&VCSSA 1,12V

[qlfenv]

On asus boards you have to play with skew control to make high frequency possible on kits that are not validated. It's not related to the CPU's IMC, or Vccio/sa voltages (I'm pretty sure that IO/SA should not be always the lowest possible because you will get Ring errors, or cache errors at high frequencies).

[Mappi75]

Thanks for your help.

I could run my first gsat stable run (1 hour)

DRAM: 1,504v
VCCIO: 1,328v
VCSSA: 1,424v

I will test if i can lower the voltages a bit more..

[Mappi75]

Is there a post out there which explains the skew control?

[Enderwiggin03]

Thanks for your help.

I could run my first gsat stable run (1 hour)

DRAM: 1,504v
VCCIO: 1,328v
VCSSA: 1,424v

I will test if i can lower the voltages a bit more..

VCCIO/VCCSA above 1.3v for daily use will degrade your IMC over time.