Quote:
Originally Posted by vinuneuro
I was looking at the specs for this T60 and the memory specs they call for seem a little strange. Maybe someone can clarify it.
Why does it say to use PC2-4200 533mhz if you're adding 2gb and 667 PC2-5300 for the rest?
Also, is there anything wrong with having say 2.5gb of ram (ie. not round number)?
What are preferred brands? Kingston, Corsair, Crucial?
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Memory
* PC2-5300 Non-Parity (NP) Double Data Rate Two (DDR2) Technology
o The use of 667 MHz SO DIMM memory is recommended for this system.
* 256 MB, 512 MB, 1 GB, or 2GB memory
* Supports up to 4GB maximum memory
Note: Only 64-bit operating systems support more than 3GB of system memory (RAM). Intel Chipsets 945GM and 945PM do not support more than 3GB system memory (RAM), even when a 64-bit operating system is installed.
o Recommended for memory expansion are 2 GB PC2-4200 DDR2 SDRAM 533 MHz SO DIMM or 256 MB, 512 MB, and 1 GB PC2-5300 DDR2 SDRAM 667 MHz SO DIMM.
Thanks fellas.
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Underlined/Bolded: These are the various capacities of RAM modules, or DIMM's, you can use. The specifications are not stating what type to use if ADDING more RAM, but what types to use according to the SIZE of the modules.
2 GB PC2-4200 DDR2 SDRAM 533 MHz SO DIMM:
This is the type you should use if you are going to use 2GB sticks (or Modules) of RAM. Two modules would give you 4GB of RAM which is the maximum your computer can support.
or (that was the key word in that sentence 
)
256 MB, 512 MB, and 1 GB PC2-5300 DDR2 SDRAM 667 MHz SO DIMM:
This is the type you should use if you are going to use any of these capacities. If you have 4 slots you could use 4/1GB sticks of this type to get 4GB total.
Do NOT mix the two types. Go with one or the other. If you are trying to
add more RAM you need to find out what type are already in there. IMO if you want 4GB total you'd be better off with 4 DIMMs of the PC2-5300 because they are faster at 667 Mhz but your motherboard has to have 4 slots to put them in.
What operating system are you using? Win XP 32-bit won't recognize more than 3.1 or 3.2 GB of memory.
You asked: "Also, is there anything wrong with having say 2.5gb of ram (ie. not round number)?"
Matched pairs of the exact same brand, type and capacity are usually best but, for example, if you have 4 slots you can sometimes put say two 1 gig sticks in one set of slots and two 256's in the other two. They still need to be the same type.
Brand? Personally I prefer Corsair. They have good tech support too. Kinston is good but when I built the computer I'm typing this on I was also looking at Crucial. Some people had reported problems with their memory and the ASUS motherboard I got so I decided against them.
Hope that helps,
Ish