EU Kingston 16GB DDR4-2666 UDIMM ECC - WARNING: 1Rx8 (check Motherboard Support !)

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luckylinux

Active Member
Mar 18, 2012
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WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING


This is a 16GB DIMM with a Single Rank (1Rx8).

Support for these DIMMs seem to be limited to the most Recent Platforms.

I couldn't find many Information whether these would be Supported on:
- Supermicro X11 Platform (X11SSL-F, X11SSM-F, ...)
- ASROCK Rack B450D4U-V1LQ5


I do NOT know the Seller and I did NOT purchase this RAM myself !

I take no Responsibility as I couldn't find any Information myself on which Platform these might work on
(neither Intel nor AMD).

I just lay it out here in case somebody knows that their System can work with Single Rank unbuffered ECC DIMMs.

I knew that TOO MANY Ranks are a Problem for RDIMMs when you try to fill a Server up with all DIMM Slots Populated (in which Case LRDIMMs are preferrable), but I didn't know that TOO FEW Ranks were a Problem for UDIMMs and the CPU Memory Controller. Apparently there are Issues when the Memory Chips are too Dense :(.


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I saw this a couple of Days ago which seemed like a good Deal


But as said above, I couldn't check whether this would work in any of my current Systems :( .

Datasheet: https://www.kingston.com/datasheets/KSM26ES8_16HA.pdf

PCN Notification: https://media.kingston.com/pcn/PCN_KSM26ES8_16HA_N.pdf

EOL Notification: https://media.kingston.com/pcn/PCN_KSM26ES8_16HA_P.pdf

From PCN Notification and EOL Notification pay attention to the same Remark I outlined above

1742574140602.png

Of course I'd appreciate Feedback for a possible future Time, if you know where this might have a Chance to work.

Best bet would be on an AMD AM4 Platform but I couldn't find any Information on that either unfortunately :(.
 
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grenskul

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Nov 8, 2020
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I've had these work( 1rx8 not these specific sticks) with my 2246g on a supermicro X11SCL-LN4F. It should be fine. Can't vouch for these specific sticks but in general it should be compatible.
 
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luckylinux

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Mar 18, 2012
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I've had these work( 1rx8 not these specific sticks) with my 2246g on a supermicro X11SCL-LN4F. It should be fine. Can't vouch for these specific sticks but in general it should be compatible.
I'm not using that platform [yet]. I got an Intel CC150 but no Motherboard for it yet :rolleyes: .
 
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luckylinux

Active Member
Mar 18, 2012
571
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I've had these work( 1rx8 not these specific sticks) with my 2246g on a supermicro X11SCL-LN4F. It should be fine. Can't vouch for these specific sticks but in general it should be compatible.
I tried to purchase those but I see 172 EUR just as Shipping Costs from Germany to Denmark :oops: .

I contacted the Seller who offered 225 EUR for 9 Pieces including Shipping to Denmark.

However I'm a bit skeptical. This seems to be a Chinese run Company (Google the Address as well as the Name of the Person that answered me) !

I can confirm that at least from Kingston Compatibility assessment Tool your Motherboard (Supermicro X11SCL-LN4F for Intel Xeon E21xx/E22xx CPUs) seems to indeed support 16GB Dense RAM (16GB in 1Rx8 Configuration):

1742647941611.png

That is NOT supported by Supermicro X11SSL-F (Intel Xeon E3 v5/v CPUs), as only the 2Rx8 are listed for 16GB DIMMs:
1742648034463.png

That apparently IS supported on ASRock Rack B450D4U-V1L, since KSM26ES8/16HA is or should be pretty much the same as KSM26ES8/16HC (minus the Hynix Die Revision, it's still a 1Rx8 single Rank Module):

1742648755528.png

1742648833996.png
 
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Samir

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I'd check compuram.biz for compatibility as well--sometimes they have vetting certain things that others have not.