Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

Midgetinabikini

macrumors regular
Original poster
Aug 1, 2006
202
23
i'm going to buy my macbook pro 17" c2d, some memory. 2 sticks of 2G each.

the only problem, is that i dont know what cas to buy, i can buy cas 4 and cas 5. im not sure what kind of memory the logic board is supporting, and i didnt find that information yet.

please help me

peace.
 
it will support cas4 or cas5 i suppose, it's only the latency speed, as long as it's the right type you'll be fine. but why put 4gb when the laptop will only use 3gb? or does the 17" address full 4gb of ram?
 
it will actually address about 3.3 Gb.

the CAS is the latency or wait time in clock cycles the ram takes to respond to an instruction. a 4 is faster than a 5.

so, yes, you will get SLIGHTLY more usable memory
with 2 2Gb sticks and it will run a tiny bit faster with the faster CAS4
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.