Pc133 Ram On Sony Vaio Pcg-fx220k?????

[beanyles]

hi everyone, first post here.

I own a Sony Vaio PCG-FX220k notebook (old pentium 3, if it matters) and i'm looking to upgrade the ram. The specifications say that I need PC100 (CL2) SDRAM SODIMMs, however i found a much better deal for a PC133 SDRAM SODIMM but i'm not complety sure if my notebook will recognize it. Some customer reviews claim that they are backwards compatible with PC100 systems, but i'm not so sure anyways.

If anyone owns a PCG-FX220K or knows for a fact that this dimm will work for me, i would apreciate a line or two.

by the way, the dimm i'm interested in is a PNY 256MB Notebook SO DIMM PC133 SDRAM Memory.

thanks in advance......

[BigBlue66]

The PC133 should indeed be backwards compatible. I would make sure it's CL2 though.

[R4_M9]

sorry i hate to step on toes, but usually PC133 is not backwards compatable. But the phrase "it depends" always comes to mind. Sometimes it is and sometimes it is not. You also have to look into density (high or low)that the ram comes with. The safest bet would be to go to www.crucial.com to make sure what ram fits in your system successfully.

edit- and by the going by crucial's website your laptop is not backwards compatable. But feel free to look for yourself.;)

[saphalline]

sorry i hate to step on toes, but usually PC133 is not backwards compatable.That's a loaded statement. PC133 is almost always backwards compatible with standardized systems. Ie, most custom-built computers. However... how many people have those!? :p And laptops by their very nature are not standardized.

For the purpose of this situation, PC133 will not be backwards compatible. But I thought you might like to know why.

[R4_M9]

Hmmm. i would agree that low density pc133 would be backwards compatable but high density pc133 is almost never backwards compatable to pc100. Most older motherboards cannot handle the high density chips. I should not have said is almost never backwards compatable. sorry . I know that pny states that there pc133 is no longer backwards compatable.

[saphalline]

True, high density chips won't really work. In those cases, I recommend people never buy more than 128MB sticks for PC100 systems. They simply weren't meant for multiple gigs of RAM like nowadays. :D

Another thing I've noticed is that a few SDRAM chip manufacturers are testing BGA (vs TSOP) on SDRAM and DDR in anticipation of the DDRII requirements. Just another intriguing observation...