X99 High frequency memory

Tryzan50 · 13 Jul 2015 at 08:59

Hi all,
I'm planning on an X99 PC and want to know the deal with running really high frequency memory. I've read that I'll have to change the base clock of my processor but have got no idea what to! :confused:

I plan on using:
Asus Rampage V Extreme
5820K
16GB (4x4) Corsair Dominator Platinum 3200MHz - https://www.overclockers.co.uk/showproduct.php?prodid=MY-411-CS&groupid=701&catid=8&subcat=2557

What does the base clock have to be changed to?
and
When I load the XMP for my memory will the base clock be changed by my motherboard automatically or will I have to do it and will the multiplier scale down as the base clock is increased?

stulid · 13 Jul 2015 at 09:36

Usually you just set XMP profile in the BIOS the board will set the bclk and memory ratio automatically for you to run at the rams rated speed.

Tryzan50 · 13 Jul 2015 at 09:44

Thank you for clearing that up, seems nice and simple

8 Pack · 15 Jul 2015 at 12:10

For 3200 on RVE I use 100 strap and 3200 mem divider with all the GSKILL Kits I use in Supernova.

Its working fine with this I am sure 100%.

Silent_Scone · 15 Jul 2015 at 12:38

3200 is the best frequency on X99. 3333 is nice but requires a fairly good IMC (for HCI memtest stability) and too many concessions needed for stability half the time

8 Pack · 15 Jul 2015 at 13:06

Also not just IMC. Most IMC can actually do 3333mhz no issue.

Board makes a massive difference at 3333+ in quad channel, not just OC socket either, although this is essential.

Not sure how many 3333 mhz Kits Silent has tested??

Silent_Scone · 15 Jul 2015 at 13:23

Only Geil and GSKILL Samsung ones, I'm talking unconditional stability here with 3333. 3333 with HCImemtest pro needs a fairly good IMC, this is a fact.

Yes board makes a difference, both Asrock Killer and RVE are better than most boards above 3300, this is where user intervention is needed on other boards.