ROG IV Extreme and Trident X DDR3 2400 no go

[rss334]

Hi everyone, just upgrade from 16gb of ripjawz to trident 32gb 2400 and having some problem getting the computer to post.
Seem anything over 1866 causes an overclock failure and require a hard power reboot to get back to post. 1866mhz with this memory is stable but 2133 or 2400 I'm not having any luck.

I have an i7 3930K overclock to 3.8ghz using preset overclock profile. Set it to XMP and manually set memory to 1866,2133, or 2400 . Under CPU level up there are two profiles #1 and #2, not sure what these are but they both state they are 1866mhz profiles.

Any ideas on how to get the memory to run at 2400? Thanks in advance - Rick

[rss334]

rss334 wrote:
Hi everyone, just upgrade from 16gb of ripjawz to trident 32gb 2400 and having some problem getting the computer to post.
Seem anything over 1866 causes an overclock failure and require a hard power reboot to get back to post. 1866mhz with this memory is stable but 2133 or 2400 I'm not having any luck.

I have an i7 3930K overclock to 3.8ghz using preset overclock profile. Set it to XMP and manually set memory to 1866,2133, or 2400 . Under CPU level up there are two profiles #1 and #2, not sure what these are but they both state they are 1866mhz profiles.

Any ideas on how to get the memory to run at 2400? Thanks in advance - Rick

Found that the timings were still set to the old latency values, updated those and now can get it to run at 2133 but not 2400, increased voltage on DRAM to 1.65 from 1.50 but won't post at 2400. Any ideas welcome. Thanks

[Chino]

Did you buy a new 32GB kit?

[rss334]

Chino wrote:
Did you buy a new 32GB kit?

Not matched no, two separate 16gb kits, Serials were consecutive on kits.

[Silent_Scone]

Kits are binned at the frequency and density that they are sold in, by combining two kits you're eating into what's referred to as the guardband put in place by the memory vendor.

Run the kit at the maximum obtainable frequency you're able to tune for. In order to run the kit at higher frequency it may well be needed to increase the DRAM voltage and also relax timings.

Read here for more information: https://rog.asus.com/forum/showthread.php?57038-Don%92t-combine-memory-kits!-The-meat-and-potatoes-o...

[rss334]

Silent Scone wrote:
Kits are binned at the frequency and density that they are sold in, by combining two kits you're eating into what's referred to as the guardband put in place by the memory vendor.

Run the kit at the maximum obtainable frequency you're able to tune for. In order to run the kit at higher frequency it may well be needed to increase the DRAM voltage and also relax timings.

Read here for more information: https://rog.asus.com/forum/showthread.php?57038-Don%92t-combine-memory-kits!-The-meat-and-potatoes-o...

Good info in the linked article thank you.