• Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
    Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.

RAM timings

M

mizer357

Limp Gawd
Joined
May 12, 2014
Messages
136
OK, so I'm not much of a OC fiddler, and with my Gigabyte motherboards, my experience with XMP profiles is that they always just worked. With my Asus Sabertooth X99 (with 5820k), the XMP profile for my Corsair Dominator RAM rated at 2800mhz (4x16GB for 64GB total) has given me nothing but headaches, from random freezes to BSODs. I've played with multiple BIOS configs, OCing the RAM with everything else @ stock, but really to no avail. Apparently there have been a litany of issues with Asus MBs and Corsair RAM XMP profiles. I've read elsewhere that manually setting speed, timings, and voltage would probably help.

My question is this: Can I run RAM at below rated speeds, and is there a resource available that would provide the timings for my RAM at these lower OC speeds, such as 2400 or 2666mhz? Maybe I'm misunderstanding this whole process. Bottom line, I'd rather not spend days tinkering around in the BIOS. I guess I'm fine running the RAM at stock 2133mhz speeds if I get to keep my CPU OC, but, being silly really, I'd like to see if I can minimally hit the 2400 I was getting with my Ripjaws.

Thank you for your time and help.
 
Last edited:
I run my 2800 MHz open box Corsair RAM at 3200 with relaxed timings, but before that I ran them at 2666 so my BCLK wasn't OCed at 2800 (for some reason it isnt OCed at 3200, but is at 3000 and 2800).

I just looked at what my RAM brand had for offerings in the same line (LPX in my case) and copied the timings listed there. Be aware that running tighter timings may not work, and you might have to relax (up the numbers a little to the next higher timings) them a little.

Just manually set the speed, timings, and voltage in your BIOS. It will likely take some testing to be sure you've got it all stable, and you may run into boot loops that require a CMOS reset.
 
I appreciate the reply arestavo. I am trying the advertised timings for the 2666mhz versions of the RAM as I write this :). Many thanks.
 
mizer357 said:
I appreciate the reply arestavo. I am trying the advertised timings for the 2666mhz versions of the RAM as I write this :). Many thanks.
Click to expand...
You guys run a much newer set up than I, but isn't there a quick way of selecting a slower ram speed? Just drop it down one notch and your done?
 
primetime, I get a little confused by RAM speed and timings myself. Simply changing the preset was not working for me from a stability standpoint, and that's where I started to dig into timings a bit. So far so good, running 15-17-17-35 at 2666mhz (fingers crossed). WIll run an extended memtest overnight.
 
Use CPUz. Shows the spd tables for the ram, including jdec and xmp speeds and timings, as well as correct voltage.
 
You must log in or register to reply here.
Back
Top