k315z is it pc2700 or pc2100(help!!!!)

[D4DAWG]

i am lookin to upgrade my memory to corsair xms to make my computer faster, and i thought it ran at pc2700 but looking harder on sites, i find its a pc2100!!
is this right?
is this slower?
will it run at pc2700?
and if so how? as i dont want to buy decent memory for it to only run at pc2100 anyway!!!
please help as pulling hair out, and feel let down by sony as on their sites they advertise new memory as pc2700!!!!
kind regards
marc

[D4DAWG]

thanx guys i do appreciate the help from all of u it is just so bloody hard these days to get someone in a corner and get them to answer the question you need answered, as with sony its a case of well thats all you can do get fit in it!! not happy, so thinking of purchasing an alienware area 51 17" machine to kick sum butt!! so will be selling this machine, so if any 1 wants to buy a week old k315z with 768mb ram with all box gtee documents etc and case for £1,100.00 get back to me here regards marc

[kee-lo_]

Putting someone in a corner can only lead to problems.
It's proven that people can answer questions better when relaxed