IBM T23 RAM problem

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Markus16

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Jul 7, 2014
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Today, when messing around with my old IBM, I decided to play some games. I realised I had only 1x PC133S 133mhz 128mb ram and it was slow, so I found another RAM, which was PC133U 333mhz 256mb and puttting them together didn't work, also I found a PC133 133mhz 256mb RAM and combining it with the old one worked, but with the 333mhz module, it didn't work. Tried the 333mhz module separately and in every way, still nothing.
Can anyone explain this situation to me?

With regard,
Markus.
 
Solution
popatim
Your motherboards memory controller doesn't support the 333mhz speed it seems and the ram isn't able to clock down to 133.

Memory
The system has 128MB or 256MB of memory standard and can be configured for up to 1GB of addressable memory. Memory options up to 512MB SDRAM SO DIMMs each can be added in the two available slots for memory expansion. The standard 128MB of memory is expandable up to 640MB and the 256MB of memory is expandable up to 768 MB of addressable memory with 64, 128, 256, or 512MB SO DIMMs without removing the 128MB SO DIMM that is standard in one of the internal slots for memory. For customers that need the maximum 1GB to which memory can be expanded, it is necessary to replace the 128MB or 256MB card with a 512MB...
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popatim

popatim

Titan
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Dec 2, 2009
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Your motherboards memory controller doesn't support the 333mhz speed it seems and the ram isn't able to clock down to 133.

Memory
The system has 128MB or 256MB of memory standard and can be configured for up to 1GB of addressable memory. Memory options up to 512MB SDRAM SO DIMMs each can be added in the two available slots for memory expansion. The standard 128MB of memory is expandable up to 640MB and the 256MB of memory is expandable up to 768 MB of addressable memory with 64, 128, 256, or 512MB SO DIMMs without removing the 128MB SO DIMM that is standard in one of the internal slots for memory. For customers that need the maximum 1GB to which memory can be expanded, it is necessary to replace the 128MB or 256MB card with a 512MB card plus add another 512MB card in the extra slot. Only 133MHz DIMM memory can be used in this system. The use of 100MHz DIMM memory is not supported in the T23 systems.
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from: http://support.lenovo.com/en_US/detail.page?LegacyDocID=migr-4ytg43
 
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