ECC memory for dell precision 360

I bought 4 512 PC3200 ECC dimms for a dell precision 360 off of ebay.  The seller did say it was "server memory" but I couldn't think of any reason why this memory would work in this machine (it supports ECC) and yet here I am.  System gives a 1-3-2 beep code.  I've tried it in different combinations (which has worked for me on some servers but not here).  Any thoughts?
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b_levittAsked:
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PCBONEZConnect With a Mentor Commented:
buffered memory is often referred to as "registered" memory.

The vast majority of servers use registered memory.
Register memory has extra chips with are buffers.

non-ECC would normally have 8 or 16 RAM chips on the module.
ECC would normally have 9 or 18 RAM chips on the modules.
Registered has additional [usually smaller that the RAM and usually in the center] chips on the module.
RAM-ECC-REG-pcb.jpg
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jamietonerConnect With a Mentor Commented:
The memory you bought is probably buffered ECC memory, the Precision 360 supports ECC memory but only unbuffered ECC memory.
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b_levittAuthor Commented:
Yeah I think you guys are right.  I noticed the "REG" on the memory right after I posted.  Thank you.
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