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Beginner
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Does DZ87KLT-75K have the new C2 stepping for Z87

My understanding is that early Z87 boards will have a flaw whereby USB 3.0 connectivity drops off in some sleep modes.

Do Intel's own 8-series boards - the DZ87KLT-75K specifically - also contain this flaw?

Any help would be greatly appreciated!

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SpookyAnon, we are doing some research about it. I'll keep you posted.

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Beginner
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That would be nice.

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Beginner
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Any news on this?

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Beginner
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jslegers:

I believe the answer is no. DZ87KLT-75K has the same C1 stepping of the Z87 chipset that every other extant Z87 board has.

Check page 3 of the motherboard technical specification for confirmation: http://downloadmirror.intel.com/22677/eng/DZ87KLT-75K_TechProdSpec01.pdf http://downloadmirror.intel.com/22677/eng/DZ87KLT-75K_TechProdSpec01.pdf

C2 was reported to hit the market sometime in July.

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Beginner
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For those who are still left wondering about this ... Intel Product Change Notification 112425-00 addresses the change from C1 stepping to C2 stepping for the DZ87KLT-75K motherboard. If your motherboard has an AA number of G74721-304 then you have the OLD part with C1 stepping. If your board has an AA number of G74721-305 then you have the NEW part with C2 stepping.

Looking at the AA number is a better option for some, like myself, who have one of these new in the box ... and would rather not go through the time and trouble of installing the board and running CPU-Z.

I hope this information proves useful to others.

John

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You can get additional information on the following link regarding the Intel Product Change Notification 112425-00: https://qdms.intel.com/Portal/SearchPCNDataBase.aspx?mm=924552 https://qdms.intel.com/Portal/SearchPCNDataBase.aspx?mm=924552

Regards.

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Beginner
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Hi,

I ordered a DZ87KLT-75K motherboard between august 15th and 20th. After having been delayed several times - and having asked the distributor while I was waiting for it if would have the C2 stepping, to which they said yes - I finally received this motherboard last week (September 17th). The box says manufacture date is August 28th, however the AA number clearly says G74721-304, which would mean it does not have C2 stepping. How is this possible if the board was manufactured on august 28th!?

 

You can see pictures of the board and box here:

 

http://www.0wned.ch/img/dz87klt75k_board.jpg http://www.0wned.ch/img/dz87klt75k_board.jpg

 

http://www.0wned.ch/img/dz87klt75k_box.jpg http://www.0wned.ch/img/dz87klt75k_box.jpg

This is rather disappointing I must say. I was so enthusiast when I received I didn't even think it would be possible, and have already plugged the cpu and cooler. So it's not really an option to have it replaced anymore (especially if takes 1 month again...). An explanation on how this is possible would be appreciated though.

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New Contributor I
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I recently had the exact same thing. I ordered this board and when I went to pick it up the box had the same date and aa# . This was in NL. Seems they are still manufacturing the C1 stepping boards....

Very confusing and a little disappointing.

Robert

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New Contributor I
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This board is no longer for sale anywhere. I suspect its because C2 boards are coming. Can someone from Intel comment on this? What is the ETA for the C2 board and will it still be called the DZ87KLT-75K? Most online etailers are saying it has been discontinued which points to a new name.

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You will be able to see that there is a new revision coming out where the DZ87KLT-75K will be converted from C1 to C2 stepping. https://qdms.intel.com/Portal/SearchPCNDataBase.aspx?mm=924552 https://qdms.intel.com/Portal/SearchPCNDataBase.aspx?mm=924552 , but I'm not sure when it is going to be available (revision G74721-305). I checked our inventory file and it is not in stock yet.

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New Contributor I
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Hi Sylvia,

thanks for the info. Just to clarify: do you mean that Intel does not have this board revision in it's own inventory yet ? so it has not even been manufactured yet ?

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Robertjal, I have access to the warranty replacement inventory file, and the revision 305 is not available yet.

I will try to find out if this revision has been manufactured or not

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New Contributor I
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Newegg has them in stock again, so I ordered one. Sure hope its a 305.

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New Contributor I
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Considering this may be the last Intel motherboard produced (at least in the consumer market and extreme series), could you please ask the team in charge of BIOS updates to make sure and support this board as long as possible? Please do not ignore it.

Specifically - Please update the BIOS with the most current versions of ME Firmware (to at least version 9.5.14.1724), EFI Driver (if a new version exists), SATA RAID Option ROM (to at least version 12.8.2.1000) and LAN Option ROM (to at least the image included with Intel Network Connections version 18.7).

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Zorlac, I will share this information to the appropriate department.

I really hope you get the revision 305 from Newegg.

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New Contributor I
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Thank you Sylvia! I have noticed in the past that even though new drivers are released, many times the corresponding firmware gets ignored (e.g., New RST driver is several versions newer than the corresponding SATA RAID Option ROM). Whats the point of releasing new drivers (that require a corresponding firmware) if you dont release the new firmware via a BIOS update as well??? I have always built systems using Intel desktop boards and it worries me now that your current desktop boards will be ignored even quicker since you are leaving the desktop board business.

By the way, I think leaving the desktop board market is a big mistake! (just an opinion)

Mike

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New Contributor I
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Got my board today. It has a Sept 2013 manufacturer date, but sadly it is only rev 304. :/

Why would you manufacture a board with a non-C2 Z87 when your PCN stated that C2 was available last July?

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Zorlac, this is information that I do not handle. However, let me check if I'm able to find something related to the availability on revision G74721-305.

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Beginner
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doubt you'll get an answer Zorlac, this was asked already and not answered

what's more important is, could the usb issue be corrected or bypassed with a firmware/bios/drivers update?

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