Setting 2400MHz RAM to 1866MHZ?

[RadWalk]

I bought 2400 MHz corsair vengeance RAM (cmy16gx3m2a2400c11r) a couple weeks ago. I tried setting it to 2400 MHz, which worked but it also requires an extra amount of voltage 1.5V to 1.65V. That extra voltage puts extra stress on my machine from what I've read and it also messes with my CPU power phase control (it goes to a constant 1.2V instead of idling down). Since then I've just been using the default 1333MHz.

My question is can I set these RAM sticks to a lower frequency? Say 1866MHz since that only requires the same voltage as 1333? How do I find the timing information for these sticks? I haven't been able to find anything other than the timing for 2400MHz. Or would it be better for me to just go buy 1866MHz sticks?

Here is my build:

 

[Tradesman1]

Yes, try setting them manually to 1866, 1.55 9, 11-11-28

 

[RadWalk]

Yes, try setting them manually to 1866, 1.55 9, 11-11-28

Before I set things, what do you think is the optimal ram speed? I use my computer exclusively for gaming.

Do you think the phase control is anything to worry about with a constant supply of voltage to my CPU (it's still under 1.3V which I've read is good to keep under).

For the timing what should I set the command rate to? The XMP profile changes it to 2T for full 2400MHz speed.

Also can incorrectly setting these timings do any damage to my other components or the sticks? From what I've read it seems like it would just prevent the computer from booting and may require resetting the mobo.

Thanks again for the help!

 

[bailojustin]

Since you can't use the xmp as thay is what clocks you to 2400. I'm guessing the base with no xmp is 1333 or 1600. Either way what you are going to want to do is if it's 1333, bring your memory multipler up to 1866, same if it's 1600.

Once at 1866 go into your timings, set them as 10 9 10 27 last one to auto and change to 2t. Change the dram voltage to 1.55 or 1.6, try between the two for whichever is more stable.

If it boots go back into bios, lower the timings even more, drop the 9, 8, 9, 25, auto, and t2.

Boot, if you boot then you can keep it like this as you will have amazing speeds, or you can go back into the bios and start dropping them to like 8,7,8,24 auto, and t2.

If thay boots run a memtest8686. See if it's stable, if stable go ahead and go back to bios. Drop from 2t to 1t. Then reboot. Memtest86.

T ou want to use the multiplier this way you avoid throwing off the fsb blck and increasing your cpu at the same time. Just use the multipliers if you want to oc your cpu.

You should not have to change the hyper transport link. If you want to see if it's stable and still do it bring that from 2400 to 2600 and the nb from 2200 to 2400.

Also no bad timi ng s won't ruin pc components, you will just have to do a cmos reset and if your mobo supports it a ram reset, same as a cmos just reverts ram back to original

If a successful boot, benchmark your ram and make sure it's working properly. Also make sure it is in the correct DIMM slots. As some only allow up to 1866 or 2400 while the others will be capped at 100 mhz or 1866mhz.

Also on your ram is a model number you can google to see what the original timings were, this will help you decide the best timings.
Just remember the lower your Cas thay faster it will be.