[RndTbl] ECC - 8 chips?

[Hartmut W Sager]

Off the top, I'd say don't touch it!  It could be a revival of those
fraudulent "phantom parity" stick that were marketed long ago, though I
can't imagine Kingston or HP engaging in that fraud.

There is, however, one way these could be ECC after all.  If the 4 chips on
one end are the main data chips, and the other 4 chips at the other end are
of much lower capacity and carry the parity bits.  Unfortunately, on the
eBay pic, a sticker is covering all 4 chips at one end, so you can't
compare.

Oh, there is one other (not uncommon) possibility - some lower capacity
chips on the back of the DIMM to carry the parity bits.  Do we have a pic
of the back anywhere?

Hartmut W Sager - Tel +1-204-339-8331


On 1 December 2015 at 17:52, Trevor Cordes <trevor at tecnopolis.ca> wrote:

> I'm doing some ECC RAM shopping on ebay (as per prev postings).
>
> I came across something weird.  There's a stick showing up in various
> places that claims to be ECC but all pics (and the physical unit, I've
> confirmed) have only 8 (or 16) DRAM chips, not 9 or 18.
>
> Does this make any sense to anybody?  Is this possible??
>
> The stick is Kingston KTH-XW4400E6/2G
>
>
> http://www.walmart.com/ip/Kingston-KTH-XW4400E6-2G-2GB-ECC-DDR2-800-240-pin-SDRAM-HP-Server-Memory-Module/13214501
> http://www.ebay.ca/itm/221949985186?
>
> http://www.newegg.ca/Product/Product.aspx?Item=N82E16820134842
> specifically says in "overview" it has "Error Checking and Correcting
> Technology"
>
> Kingston has discontinued this part and it's hard to even find on the site
> anymore, but here's:
>
>
> http://www.ec.kingston.com/ecom/hyperx_us/partsinfo.asp?root=&ktcpartno=KTH-XW4400E6/2G
> says x72 ECC
> The equiv HP #'s they provide all show up on the net as 9 chip, so this
> Kingston stick should be ecc.
>
> ??? WTF?
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