I tested a Corsair memory (1866MHz) at 2400MHz and the system did not post. This could happen because the memory does not support that speed. I went back to the tested memory speed (1866MHz) and it was working fine but the 4th generation processors are capable to work with a memory speed up to 1600MHz or 1333MHz.
Our best recommendation is to use the components at the default specifications in order to get the best functionality from them. It is also important to say that the Intel® does not support or provide warranty on products that have been over clocked.
I understand that 1866MHz rated memory should run at 1866MHz speed under its respective XMP1.3 profile. Overclocking any higher (such as 2400MHz) will result in instability. Under default specs, I also expect it to revert back to the JEDEC spec (1333MHz).
In my case, as well as in Carnage21's, we are using Corsair Vengeance Pro with the advertised XMP speed of 2133MHz and 2400MHz, respectively, which should run at the advertised frequency under XMP1.3. The problem is that they do run but after the sequence of shutdown/power up/shutdown/power up. Now this isn't a problem on other motherboards as there are a handul of reviews using Corsair Vengeance Pro memory clocked at the advertised XMP1.3 speed with no reported issues. For some reason, this is a problem on the DZ87KLT-75K board specifically running the Corsair Vengeance Pro memory modules under XMP1.3 profile speeds.
Perhaps the best course of action would be to test using this specific brand and type of memory and validating the XMP advertised speeds to we have an apples-to-apples comparison. Do you have this capability?
Based on the memory part number you provide the fastest speed this can run is 1866MHz according to their website:
At this point my best recommendation is to contact corsair and confirm with them the configuration for this memory. In the meantime we are going to still checking on this.
Sorry for any confusion but the part number for the memory in question is CMY32GX3M4A2133C11 which has an XMP1.3 speed of 2133MHz. Likewise, Carnage21 has reported identical issues with the 2400MHz variant of Corsair Vengeance Pro. Corsair has confirmed to me that these are the representative speeds and are designed to be fully compatible with 3rd/4th Generation Intel processors and the z87 chipset. Please keep us updated as to the progress. Thanks for supporting us with this persistent issue.
Yep i have
thanks alchemy for following this up
I have been very busy at work but i still have the problem with this ram
i have the same problem too , with the 16GB version CMY16GX3M2A2133C11 , 1.5 Volt.
Computer config the same as Alchemy7s' with windows 8 64bit
Hey every one and kevin_intel
You should escalate this issue even more so they can provide a BIOS fix and soon.
Been running the DZ87KLT-75K for 3 day now and i have a similar memory issue, I'm currently on the latest BIOS
I noted that the memory issue was persistent on the release BIOS but on the current 0344 it doesn't occur much.
Problem In details:
Some times when i switch on the PC from cold boot i hear 3 beeps meaning memory error no post on screen then the PC shuts down and turns back on by it self, then it posts with a massage stating the PC has recovered.. some settings were changed.. something of the sort pres Y to enter setup N to proceed, when Y to enter setup i not that some times the memory resets it self to 1333 and sometimes remains at the XMP 1600. this whole mess is irritating and annoying.
- DZ87KLT-75K AA304
- i7-4770K on Stock Speed And Stock Cooler
- Corsair Vengeance LP CML16GX3M2A1600C9 (I Bought 2 16GB Kits Total 32GB XMP 1.3, 1600MHZ C9)
- PSU Seasonic X-660 (Works Very Well Even On Previous DZ68BC)
- Geforce GTX 770 2GB
Link to the RAM, mine are the Black Ones 1.5V
Oh the Kits are working fine on the DZ68BC they have been working in that Build for 6 months, so the RAM are not bad plus retested them on the Same DZ68BC and MSI Z87 Based and EVGA Z77 Based motherboards
So as you can see the problem occurs even on 1600MHz, this is a BIOS bug as some times when the problem appears when i go into BIOS there is no XMP to select (Mostly when the speed is still at 1600MHz) have to shut down and switch on again to be able to select and confirm the XMP which is version 1.3
I have running a DZ87KLT-75K next to me with the memory part number F3-1866C10D-16GSR running at 1600MHz and I have not been able to replicate the issue you are saying. However, I have escalated the problem and they are taking a look on this to have it fixed as soon as possible.
I appreciate your feedback on this matter.
The issue does not occur immediately plus its random, might happen might not happen but it is there. So far in the last 4 days it has happened like 5 times, issue is present mostly coming from cold boot after shutting down the PC for long hours *NOTE* some times it does not appear and some times while you don't expect it to happen it does.
You might be using a different version of the motherboard, I am very much aware the retail version is not same as the one reviewers were sent to, in fact you could be having the same version as the one the reviewers have.
Retail Version : 1: No J-Tag Header, 2: No Detachable BIOS Chip
Reviewers Version Like Yours : 1: Has J-Tag header for advance debugging, 2: Has detachable BIOS Chip
Plus you could be running on a per-release version of the BIOS there were at list two BIOS revision before the 0336 Release Version they were on Intel website initially before release.
Or you could be running an upcoming stable bios higher than 0344.
Or even you could be running a C2 stepping DZ87KLT-75K
Anyway please i hope a fix is coming