[JoJo Gunn]

ping

[webschooner]

requesting Tech Ping ... thanx

[isthisnickcool]

You owe someone some money back. LOL!

[ken21]

prepare to be barraged by morons.

good luck!

si.

[KoRn]

They look like ‘place holders’. What does the other side of the chips look like?

[devane617]

the 512k memory was installed on the motherboard (probably). the chops shown are nothing more than blank place holders that are removed when memory is added. I suspect the buyer is correct and a refund is in order. it’s an honest mistake.

[webheart]

I think that he means banking, or just bank, memory, which is meant to be used in pairs, and the system board has to support it. You can tell by the way the little notches on the connector edge line up on the main board.

[Signalman]

http://en.wikipedia.org/wiki/RDRAM

[beezdotcom]

The first clue should be that there are no little black things on them.

[an amused spectator]

Sounds like a parity issue - how old is the box?

[Salamander]

What you have are “memory spacers” like these:

http://cgi.ebay.com/Dell-CRIMM-RDRAM-RamBUS-Continuity-Module-Filler-9578D_W0QQitemZ160164023296QQcmdZViewItem?_trksid=p3286.m20.l1116

[Yo-Yo]

A RAMBUS Continuity-RIMM (CRIMM), also known as terminator or dummy.

[Xenophon450]

Are the memory modules on opposite side? If I recall correctly, memory sticks that were 256 only had them on one side, as opposed to 512 which had blocks on both sides. Although I am not familiar with RDRAM, so I could be wrong.

[Malsua]

You screwed the pooch. lol.

Those are not memory chips. They are rdram terminal/continuity chips.

[JoeProBono]

"You can think of a DRDRAM system as a daisy-chain of chips. Data and instructions can be usefully described as going in to one end of the first module, through all of the chips on that module one after the other, going out at the end of the module, going in to one end of the next module, and so on. At one end of the chain there's the RAM controller, at the other end there are terminating resistors.

These dummy RAM modules sit in the unused RAM slots of any RDRAM-equipped machine that doesn't have a real RIMM in every slot. They're more correctly referred to as Continuity RIMM Modules or C-RIMMs, and they're there to provide electrical continuity through all of the RAM slots. Remove them and the motherboard won't work, because the daisy chain is broken."

[Yanni.Znaio]

They don't appear to have enough connectors on the edge of the SIMM cards to be real memory modules.

Every one I've ever seen has a row of edge connectors that run the full length of the SIMM/DIMM

[Swordmaker]

What you sold are RAMBUS Continuity-RIMM (CRIMM), also known as terminator or dummy. It is basically a resistor pack that is designed to prevent signal echos on a memory bus. It does not have any memory chips on it.

Refund the man his money.

[THX 1138]

I Googled “Dell PWB 9578D” and found an outfit called Recycled Goods Inc. They have several pictures, including the reverse side, and there’s nothing there. They certainly don’t look like any RDRAM chips I’ve ever seen...

[Bloody Sam Roberts]

I think the real dummy is the buyer who paid money for them thinking they WERE real memory.

Give him the refund.

[ShadowAce]