Posted on 10/30/2008 7:11:02 PM PDT by webschooner
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."
There’s nothing on the other side. The solder pads are unused on the visible side.
“The design of many common Rambus memory controllers dictated that memory sticks be installed in sets of two.” This was explained to me as “parity” in another lifetime.
Every one I've ever seen has a row of edge connectors that run the full length of the SIMM/DIMM
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Well, I guess less than 640K is still good for someone these days, lol!
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.
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...
It's about the right time frame. You don't see a whole lot of newer boxes, if any, requiring a double set of RAM chips to pass the powering up RAM check.
The reason for the dummy chips is apparently to fool the system into believing that it's got a double set of chips (parity). If you have four RAM slots, you must either fill two or four slots.
If you put one RAM chip or three RAM chips in, the system will puke before it loads the OS.
Thus, your extra dummy chips.
LOL! Sometimes that's the case on these kind of threads.
Looks like this one's solved quickly - I learned something myself. Never heard of CRIMM before.
OK, thanks to one and all who responded! I really appreciate the help — very good and comprehensive information from everyone.
Question fully answered, and I just fully refunded the buyer. It was an honest mistake. All is well that ends well.
Give him the refund.
thanx — already refunded. I also wondered why the buyer didn’t recognize from the pic that they were dummie memory, since he seemed to know all about that issue when he emailed me. But I refrained from saying anything about that to him — no point really.
Exactly. The people who do the best on eBay are the people who were taught by Mom and Dad how to get along with people. I've been eBaying for a decade and have found that to be a truism.
Glad things turned out ok for you.
Honest people like you keep eBay going. Mistakes happen.
Thank you! You know we conservatives, do unto others as we’d like them to do to us, LOL ... I won’t forget a passing incident that happened to me years ago when I was selling, and I gave a young black lady too much change, and she came right back and gave it back to me. I thanked her for her honesty, and she said as she chuckled, “I want to go to Heaven”. She was sweet and refreshing.
It was inspiring to me, and to this day, I haven’t forgotten it. It’s the little actions minute-to-minute in life that are important — how we treat others — how we live our lives. I’m sure she has no idea that her honesty left me with a little spark of inspiration that has lasted many years, but she did. So I think of that sometimes, and I think, what if by some small kindness, I can uplift someone else and perchance inspire them.
Our church has an annual gathering where folks come from all over the world and basically take over 3 or 4 hotels in the center of a major US city. The hotels actually lose money off of us compared to the regular clientel, because we don’t drink, and they make lots of money off of liquor, but still, they love the week we are there. Things they almost never see happen, happen — people helping the maid make the bed, someone turning in to the front desk, a wallet full of money they found with no ID in it, just general kindness to the staff, and so on, and so on. Last year, the manager told one of our ministers, “I have one word for you, Expand, the world will be a better place for it.”
Didn’t mean to ramble there, LOL. Top of the morning to you ...
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