can PC2100 and PC2700 types of RAM work together?

[imported_cybex]

hi guys,

I have a PCG-FRV27 model vaio laptop and I would like to upgrade the ram.
the system normally uses pc2100 type 200 dimm ram but my question is; can I use both them together. clearly, one 256 mb pc2100 and the other 512 mb pc2700 , dost it work? and the second question is which one is better, pc2100 or pc2700?

 

[PCHPlayer]

I run my desktop with a stick of 512MB of 2100 and 2 sticks of 256MB 3200 (All Crucial brand) and it works just fine. Don't know if laptops would be more sensitive, but I doubt it. The 2700 memory is faster, so I guess it is better. I would get whichever is cheaper.

 

[stevty2889]

They will work fine together. Pc2100 is for a 133Mhz FSB and pc2700 is for a 166Mhz, so technicaly the pc2700 is faster, but they will both run at pc2100 speed when used together.

 

[imported_cybex]

thanks for the info PCHPlayer....

have anybody tried this for the laptop?

 

[AristoV300]

Originally posted by: cybex
hi guys,

I have a PCG-FRV27 model vaio laptop and I would like to upgrade the ram.
the system normally uses pc2100 type 200 dimm ram but my question is; can I use both them together. clearly, one 256 mb pc2100 and the other 512 mb pc2700 , dost it work? and the second question is which one is better, pc2100 or pc2700?

It's not about them being better, they are rated to run at a different speed. If your machine is running at the pc-2100 speed then the higher spec'd pc-2700 would run at that speed as well. Pretty much a waste to buy the 2700 though unless you can't find 2100.

 

[imported_cybex]

okey got it.. thanks guys..

 

[imported_michaelpatrick33]

stevty2889 is right. If you have the bios set to autodetect than the 2700 will throttle back to 2100 speeds with no problem. I have a mix of 2700 and 2100 in my rig. Just be aware that you don't want to run dual channel like that if you can help but you should be fine

 

[zephyrprime]

Pretty much a waste to buy the 2700 though unless you can't find 2100.

Often they're just about the same or the exact same price.