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Old Jul 21st, 2005, 09:59 AM   #1
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RAM for Dual 1.25 G4 Mirror Drive

Okay, I'm pulling my hair out here... we have two PowerMac G4 Mirror Drives here at the office. Dual 1.25ghz models with 512mb RAM.

After ordering and receiving two wrong types of RAM from the local Mac reseller (first it was PC3200, which didn't mix with the 2700 in it, and then it was PC133 for no apparent reason), we ended up buying sticks of GB Micro 512mb DDR PC2700 333mhz from Staples.

At first, the RAM would not work with the current installed RAM which, upon inspection, is GB Micro 512mb DDR PC2700 333mhz RAM - just a slightly older version of it.

I ripped out the old RAM and put the 3 new chips into one machine. It booted, but it soon hung during DVD viewing, Photoshopping, or simply just leaving the machine on for a few hours.

Is the GB Micro RAM compatible with the PowerMac? Where should I buy RAM for these machines in Canada (NS to be specific)?
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Old Jul 21st, 2005, 10:33 AM   #2
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Go to Crucial.com and they will help you select the proper ram for your machine. I ordered from them last week and had my order at my door in 2 days! Best of all 100% compatible guarantee.
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Old Jul 21st, 2005, 11:28 AM   #3
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As a fellow G4 DP 1.25 owner I can tell you that these systems are VERY finicky on what memory you use. Get the wrong set, or even a wrong single stick, and nothing but issues, boot errors (if it would boot), and more ...
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Old Jul 21st, 2005, 11:28 AM   #4
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I believe (last time I checked anyway) that only one company makes RAM for these computers so if you get anything else, it will not work.
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Old Jul 21st, 2005, 11:45 AM   #5
 
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I believe (last time I checked anyway) that only one company makes RAM for these computers so if you get anything else, it will not work.
Not sure about that - I have put in "generic ram" to Kingston and OCZ without any problems.
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Old Jul 21st, 2005, 12:53 PM   #6
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Welcome to "blind writes".
YOu need to find a matched set that works with that machine.

3200 should be no problem but we have found "fussy" MDDs.
The correct is 2700 but it has to be tested there is no "sure fire" way.

If you like we can test a set in a DP 1.25 here and exchange your existing ram.

I'll say it again given Apple's approach there is no "guarantee" that any set of RAM will work even if spec'd correctly - testing is the only way and being able to easily return what does not work.

BTW what exact OS are you running?

Are your drives all on cable select as well.



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Old Jul 21st, 2005, 03:57 PM   #7
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Quote:
Originally Posted by MacDoc
Welcome to "blind writes".
YOu need to find a matched set that works with that machine.

3200 should be no problem but we have found "fussy" MDDs.
The correct is 2700 but it has to be tested there is no "sure fire" way.

If you like we can test a set in a DP 1.25 here and exchange your existing ram.

I'll say it again given Apple's approach there is no "guarantee" that any set of RAM will work even if spec'd correctly - testing is the only way and being able to easily return what does not work.

BTW what exact OS are you running?

Are your drives all on cable select as well.
Hrmmm. I am thinking of just giving up and sending the RAM back to Staples and forgetting the whole thing since I am leaving this job in 3 weeks. Haha.

The G4's are running 10.3.9. There are 2x250gb drives in each machine as well. Nothing has been changed since the computers were bought in 2003. They have been working fine, except we found we needed a bit more horsepower for video editing.

I just think it's ridiculous that the machines are that finicky, and also that a Mac reseller AND TWO RAM manufacturers (GB Micro and Kensington) have no clue.
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Old Jul 21st, 2005, 04:16 PM   #8
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It's not the RAM manufacturers - if you went back to say Jaguar that RAM would likely work fine and the RAM they sent is in "spec" just the particular machine with the particular OS gets gnarly with it.

There is no one party to "blame" - it's just something that happens about 5% of the time as you can tell from the threads here.

We have 200 pcs of 512 and 50 1 gig sticks that are cycling through the G5s here at full bore and then set aside as matched tested sets. Annoying??? You bet



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Old Jul 21st, 2005, 04:19 PM   #9
 
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And some manufactures to sell matched sets (OCZ for one).
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