HELP!......RAM Nightmare

  nikrowley 15:54 22 Mar 03
Locked

Installed a stick of generic RAM - 256mb PC133 to PC and it is reading as 128mb. Freeware confirms it is 256mb and Ive also tested another stick by different make but exactly same spec (Crucial) and had no problems!

Tried both sticks together and get 384mb total. Tried generic 256mb alone.......get 128mb.

Any ideas people?

  DieSse 15:58 22 Mar 03

It could be you have an older motherboard, which requires a differently configued RAM module than newer boards - sometimes reffered to as "double-sided".

Can you tell us what motherboard chipset you have ? (BX and related chipsets have this problem + some others.)

  nikrowley 16:07 22 Mar 03

Motherboard ID: 12/22/1999-i810-W83627HF-6A69MJ19C-00
Motherboard Name: Jetway 910AF/911AF
Front Side Bus Properties:
Bus Type Intel GTL+ Bus 64-bit Real 66 MHz
Effective clock 66 MHz
Bandwidth 528 MB/s
Chipset Bus Properties:
Bus type Intel Hub Interface Bus 8-bit
Motherboard Physical Info:
CPU Sockets/Slots 1 Expansion 4 PCI, 1 AMR RAM 2 DIMM Integrated Audio, Video Form
Chipset i810

  nikrowley 16:10 22 Mar 03

This is the generic memory stick info

Module Name: J&A
Module Size: 256 MB (1 rows, 4 banks)
Module Type: Unbuffered
Memory Type: SDRAM
Memory Speed: PC133 (133 MHz)
Module Width: 64 bit
Module Voltage: LVTTL
Error Detection: Method None
Refresh Rate: Reduced (7.8 us), Self-Refresh
Highest CAS Latency: 3.0 (7.5 ns @ 133 MHz)
2nd Highest CAS Latency: 2.0 (10.0 ns @ 100 MHz)

  nikrowley 16:13 22 Mar 03

This is the Crucial memory stick that works fine!

Module Name: Micron Tech. 16LSDT3264AG-13EE3
Serial Number: 1840981274
Module Size: 256 MB (2 rows, 4 banks)
Module Type: Unbuffered
Memory Type: SDRAM
Memory Speed: PC133 (133 MHz)
Module Width: 64 bit
Module Voltage: LVTTL
Error Detection Method: None
Refresh Rate: Normal (15.625 us), Self-Refresh
Highest CAS Latency: 3.0 (7.0 ns @ 142 MHz)
2nd Highest CAS Latency: 2.0 (7.5 ns @ 133 MHz)

  nikrowley 16:14 22 Mar 03

This is the Crucial memory stick that works fine!

Module Name: Micron Tech. 16LSDT3264AG-13EE3
Serial Number: 1840981274
Module Size: 256 MB (2 rows, 4 banks)
Module Type: Unbuffered
Memory Type: SDRAM
Memory Speed: PC133 (133 MHz)
Module Width: 64 bit
Module Voltage: LVTTL
Error Detection Method: None
Refresh Rate: Normal (15.625 us), Self-Refresh
Highest CAS Latency: 3.0 (7.0 ns @ 142 MHz)
2nd Highest CAS Latency: 2.0 (7.5 ns @ 133 MHz)

  duplo 16:22 22 Mar 03

not 100% sure about this- could it be that the generic stick is 1 rows, 4 banks and the crucial is 2 rows, 4 banks.

Its the only difference I can see.

  AMD 4 ever 16:23 22 Mar 03

for sarters i look like you have PC133 and PC100 in the mix, see if another PC100 stick will work!

  nikrowley 16:39 22 Mar 03

thanks for your help.......please keep the suggestions coming everyone!

  Bebee 18:45 22 Mar 03

Not very good on this, but I think my mobo docs say that if using a mix of 100 and 133 the bios needs to be set for the slower one.

  professor 19:44 22 Mar 03

its a VERY BAD idea to use both pc100 and pc133 together as they have different voltages! by mixing both you risk KILLING ur m\b!!

dont say i didnt warn you...as for ur prob id say you should just take the module back and change it might b that it got labeled incorrectly that or bcuz of the voltage difference it cant detect it properly

prof

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