Stan,
Kingston part numbers your Soyo supports. Notice the single-sided 256 is
not recommended by Kingston. You can substitute PC133 part numbers, but
Todd Gruhn is correct as far as I can tell, Kingston only lists ECC memory
as 'registered'. Kingston's product guide would have been a lot clearer if
they had pointed that out, since it is easier to understand ECC and non-ECC
ram can't be mixed. Notice ECC memory has 72 in place of 64 in the part
numbers, an easy way to keep them separate while shopping.
KVR100X64C2/128 128MB PC100 DIMM CL2
KVR100X64C2/256 256MB PC100 DIMM CL2
KVR100X64C2/32 32MB PC100 DIMM CL2
KVR100X64C2/64 64MB PC100 DIMM CL2
KVR100X72C2/128 128MB PC100 ECC DIMM CL2
KVR100X72C2/256 256MB PC100 ECC DIMM CL2
KVR100X72C2/32 32MB PC100 ECC DIMM CL2
KVR100X72C2/64 64MB PC100 ECC DIMM CL2
This brings up a question Drew touched on, are all single-sided DIMMS using
one bank, and if so will the 815 support 3 256 meg single-sided DIMMS?
Kingston's site is not clear on the subject.
Tom Turak
-----Original Message-----
From: Drew Dunn [mailto:[log in to unmask]]
Sent: Wednesday, July 18, 2001 2:07 AM
To: [log in to unmask]
Subject: Re: [PCBUILD] SDRAM: 64+64+128+256=?
Your 256MB SDRAM is not registered memory. I have several of those modules
at home and at work. There can be a problem in mixing modules from
different manufacturers, especially if the modules are designed to adhere
exactly to the minimum JEDEC standard for SDRAM as opposed to exceeding the
standard. It's possible to end up with a mix of memory that has capacitance
and/or inductance characteristics that wreak havoc with the system's memory
timings and cause just the problems that you're experiencing. It doesn't
mean that the memory is bad, just that the modules won't work with each
other in the same system.
Additionally, if your system is based on an Intel 815 controller, you cannot
reliably use all three DIMM sockets because Intel provided for only four
banks of memory. Generally three sockets are provided, however that is only
as a convenience for memory that has a single bank, generally 32MB DIMMs.
See what happens if you use combinations of two DIMMs, particularly the
256MB and 128MB modules.
Unfortunately, I've been working pretty exclusively with DDR memory design
the past couple of months, so I may have some SDR SDRAM and DDR SDRAM stuff
crossed, but I think this is pretty much right.
Drew Dunn
The NOSPIN Group
-----Original Message-----
Hi Tom Turak! At 07:58 AM 7/17/01 -0400 you wrote:
>According to Kingston, the 128 and 64 meg modules are NOT registered. Its
>because you are mixing them that you are having difficulties.
These modules are not from Kingston.
1)64-100 has abbreviation NPN
2)64-100 has abbreviation NCP
3)128-133 has abbreviation VM
The only 256-133 is Value Ram by Kingston.
--
Stanislav Rabinovich
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