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Re: Diff between SDRAM and DDRAM
Only one of those will work in any computer. Synchronous Dynamic Random Access Memory is older and slower, Double Density Random Access Memory is faster and DDR2 is newer. The notch in the connector edge will not match the RAM slot if you have the wrong one. Also the DDRAM has various speeds to match the bus speed of the motherboard so designators like PC2100, PC2700, PC3200, etc. are important and correspond to 266MHZ, 366MHZ, 400MHZ, and so on. Notebook use SODIMM RAM and have the corresponding DDR, DDR2 designators but still have notches that must match the slot. When you buy RAM just provide the model of your computer as each manufacturer has numbers that are all designed to confuse it seems and there may be no chance of exchanging the memory after you open the package. Steve
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Yes, you can. You can upgrade your Acer
Aspire 5630-6760 Notebook (DDR2-533MHz) Laptop to up to a maximum of 4GB
Memory, the system has 2 (2 banks of 1) to install Memory. For best Laptop performance use the
maximum amount of allowed Memory per slot for your Laptop.
The best way to know what you need is to search for it on the web type in "Thenameofyourcomuter""specs"
if your comptuer is the Lenovo ThinkPad R400 notebook then your specs are
1 x 2 GB
Memory Specification Compliance
DDR3 SDRAM - 1066 MHz
2 GB / 4 GB (max)
SO DIMM 204-pin Witch means its only upgradable to 2 gigs.
to see what is in thier now start your computer up, Go to my computer, right click on it and go to properties. Under that it will show information about your comptuer.
what did you mean not working ?? didnt see the new Ram memory ?/ or didnt boot at all ....anyway ...when adding new ram memory ..first thing you do is to remove the Bios battery for to let bios on defaults and let it be able to read the new added unit ....second ...be sure the new added ram is compatible and in the same frequency ,then remove the battery like I said and in the last ...reinstall the operating system ....always look at the boot to see if the ram memory that is displayed is the same value with the one you know that actually is installed on the slots...it should work if this was just an option to make it faster ...and not a wild guess cause it use to have issues and didnt boot before...
Yo u have 2 slots in u r machine I am sending u details information of updradation in ur machine :
frequency of ram should be
667 MHz Dual Channel DDR2 SD RAM
option 1. A system ready for the next generation of applications and games 3 or 4GB1 Dual Channel2 DDR2 SDRAM
2. A system capable of handling Windows Vista® Aero as well as today’s latest games. 2GB Dual Channel2 DDR2 SDRAM 3.
Basic performance for the Windows Vista® AeroTM interface (PCs purchased with Windows Vista Home Premium and less than 1GB of memory will NOT be capable of running Aero). 1GB Dual Channel2 DDR2 SDRAM 4.
Basic performance, lowest initial cost (Windows Vista® Home Basic) 512MB Dual Channel2 DDR2 SDRAM