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Upgrade Ram Laptop, Need Technical Advice


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#1 Bernee

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Posted 18 July 2008 - 05:56 AM

I have a Toshiba laptop model SA10-S113, 1.99 GHZ speed, 80 GB HDD, 256 MB DDR SDRam (Hynix brand, PC 2100S, 266 MHZ bus speed, CL 2.5, Support Voltage=2.5V, Bandwidth=2.1GBs, 200-Pin SODIMM). As per its User Guide, the laptop memory can be upgraded to a maximum of 1 GB only. The original OS is Win XP Home which I have updated to Service Pack 3 about 2 weeks ago. I want to upgrade the RAM to 2 pcs 512MB or a total of 1 GB. My question is: if I want to upgrade my RAM with 2 pcs 512MB, PC 2700, 333MHZ bus speed, CL 2.5, Support Voltage=2.5V, Bandwidth=2.7GBs, 200-Pin SODIMM, will this be compatible with the existing specs of my laptop? Will there be no adverse effect as the bus speed and bandwith have increase? Or will I follow the original specs of my RAM (Hynix brand, PC 2100S, 266 MHZ, CL 2.5, Support Voltage=2.5V, Bandwidth=2.1GBs, 200-Pin SODIMM) with 2 pcs 512MB capacity? Please give me technical advice on this proposed RAM upgradation. Thank you very much.

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#2 nigglesnush85

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Posted 18 July 2008 - 06:11 AM

Hello Bernee,

You should always install RAM that is the same as the existing RAM. The PC 2700 would be forced to work at lower speeds to match the existing RAM. Unless you remove both RAM modules and replace them, this depends on if the motherboard will support the different type.
Regards,

Alan.

#3 dc3

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Posted 18 July 2008 - 09:10 AM

Crucial suggest PC2700, so yes you can use the PC2700 without any worries. As nigglesnush has pointed our, if you mix the speed of PC2100 and PC2700, the two modules will only run as fast as the slower PC2100.

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#4 Bernee

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Posted 18 July 2008 - 11:39 AM

Thank you for your replies. I forget to tell that my plan is to totally replace the existing 1 pc 256MB DDR RAM, 266MHZ (pls see previous specs) with 2 pcs 512MB DDR RAM either 266MHZ or 333MHZ bus speed (pls see previous specs). If I will replace my existing RAM (266MHZ, PC 2100) with 333MHZ (PC 2700), will my laptop become faster in terms of bus speed? By the way, the specs of my motherboard is Toshiba brand, model Portable PC, Version AO, Chipset=Intel i852GM, Rev.=A1, Southbridge=Intel 82801DB (ICH4-M), LPCIO=SMSC. For its BIOS, the brand is Toshiba, Version1.20, Date=05/20/2003. Can you also advice me if this motherboard can support a RAM of 333MHZ bus speed? Again, thanks for your help.




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