[timhale]

I asked RAMjet what the speed of the RAM chips they were selling, and they said...
<<
No, Apple requires 3-2-2 speed PC-133 for the G4 2001. Since it is so much
faster than the 2-2-2 PC-100, you are actually better off. There is no
2-2-2 speed code PC-133 being manufactured.

Please call 1-800-831-4569 to order, or order online at: http://www.ramjet.com/g42001.asp
>>

Is this true? That 3-2-2 is the fastest RAM PC-133 available?

Thanks,
Tim

[dtriska]

Originally posted by timhale:
There is no 2-2-2 speed code PC-133 being manufactured.

I wondered about this, as well. DMS doesn't list PC133 as CL2, CL3, or anything else.

The RAMjet rep you spoke to was definitely mistaken.

Although there really isn't much real-world difference in performance between the two, 2-2-2 rated SDRAM is the faster standard.

To the best of my knowledge, the new PowerMacs don't require 3-2-2 SDRAM--but even if they do 2-2-2 SDRAM will run at the slower speed with absolutely no problems.

Try http://www.macseek.com/G4.shtml for more RAM vender options. I just ordered two 256MB PC133s from Data Memory Systems. Both are 2-2-2 rated w/lifetime guarantee @$79.

Good Luck

MrA

[spicyjeff]

He was either lying to make a sale or mistaken since you can go to Crucial and pick yourself up some PC133 2-2-2 (CAS2). And I think Crucial should know since they manufacture the stuff

[timhale]

I checked the Crucial site, and they do have a 256 chip at 2-2-2 speed listed. It's PC-133 speed, at 7.5 ns. The chip at the RAMjet site lists a speed of 7 ns. Does that .5 make any difference? I haven't found anywhere where it says exactly what speed of RAM is required, in terms of nanoseconds.

Tim

[Cipher13]

Sure on that?
I thought PC133 was currently only 322... oh well, we learn something new everyday eh?

Cipher13

[spicyjeff]

Yes I am sure on that. That is why Crucial is currently charging $600+ for a PC133 CAS2 512MB DIMM since they are the only people who have them...supply and demand.

[Leonis]

The real question is....

Are you willing to pay 400 - 500 bucks extra for only 2-5% of performance gain???

If you are buying 3 RAM modules that extra cost would add up to almost $1500!!

Not for me. I would rather save money and use the spare money for other things.

------------------
My comic web site

I don't use spell checker.

[This message has been edited by Leonis (edited 03-01-2001).]

[cygnusx1]

for timhale,

nanosecond timing was used for asynchronous RAM, like the older pmacs (8600, for example). for someone to tell you that they're selling 7.5ns PC-133 SDRAM is meaningless. PC-XXX is synchronous, so the RAM is clocked at the bus speed, not measured in refresh rate.

math time:

1/7.5ns = 133.333...MHz
1/7ns = 143MHz?!?!?

hey, you should get the 7ns stuff, then you'll be at PC-143!!!

[jeffnudi]

http://www.transintl.com/ is listing a 512 mb SDRAM dimm cas 2, 2-2-2 133 mhz for $199. I have bought twice from them with no disappointments.