Re: Adding RAM to G4
- From: Rowbotth <rowbotth@xxxxxxxxxxxxxxx>
- Date: Sat, 22 Dec 2007 18:53:50 GMT
A correction. I have 3 slots with the 0.5 G Byte of Ram in each one.
Total according to the "About This Mac" states that I have now with the
3 slots, "Memory 1.5 GB DDR SDRAM"
I'll try playing with the different slots and see what develops. Thanks
for the advice.
H.
=================
In article <1i9j9b0.1pm8zrv5br2z9N%dempson@xxxxxxxxxxxxx>,
dempson@xxxxxxxxxxxxx (David Empson) wrote:
Rowbotth <rowbotth@xxxxxxxxxxxxxxx> wrote:.
I have 1 Gb of RAM on my G4, and I want to add more. So I got 2 chips
(Kingston KVR400X64C3A/512) and thought I can bring the total RAM up to
3 Gb.
I assume that "3 Gb" was a typo. Those chips are 512 MB each, so the
total would be 2 GB. That is the maximum RAM you can put in any G4.
You didn't say which model you have, but I'm guessing it is a PowerMac
G4 "Mirrored Drive Doors" model (or the similar one with Firewire 800),
since the type of memory you indicated is not compatible with older
models.
I assume that DDR400 (PC3200) memory will be compatible with an older
computer which expects DDR333 (PC2700) or DDR266 (PC2100).
Problem is that I seem to be having problems adding the RAM to the 4th
slot to the right when you open the side wall and look at the place
where the RAM goes. WIth two different chips, I get a freezupo when I
first install and reboot, and then when I reboot and restart I get an
error message where I see probably about every language that Apple deals
with, as well as a strong message to re-start.
The latter is a kernel panic. It is frequently caused by having faulty
or incompatible RAM. This can also result in a freeze.
So what I have done is take the side of the chip with the sticker on it
and keep that side to the left when I insert it into the slot. THis
worked fine for the chip in the 3rd slot, but twice now the RAM in the
l;eft-most slot fails and gives me this scary error message.
Any help, please?
Given a new module that is working in the 3rd slot, try moving that
module to the 4th slot and run the computer that way for a while. This
will also give you 1.5 GB total memory. (You can populate any
combination of memory slots - they don't have to be in order.)
If it is crashing with new memory in the 4th slot (with the 3rd slot
empty), but the same memory module works in your 3rd slot (with the 4th
slot empty), then the problem is likely to be a fault with the 4th
memory slot in your computer.
If it is working OK in the 4th slot (with the 3rd slot empty), then one
of the new modules might be faulty. Take out the "good" one and replace
it with the other one (using either slot). If it starts to crash, then
that module is probably faulty.
If both new modules work by themselves, it might be a problem which only
occurs when both the new modules are installed at the same time.
Try removing both the old modules and run the computer with only the two
new modules. If that works reliably, then try adding one of the old
modules back again. If it starts crashing again then it may be some kind
of interaction between the old and new ones which is causing the crash.
Hopefully this will be enough to narrow down the problem somewhat.
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