RE: G4 17" Aluminum (1.33 GHz) RAM Woes....

Hi Everybody!
I have a G4 17" Aluminum (1.33 GHz) with 512 MB in each slot. The one slot has Kingston RAM in it, and the other has, I believe, Hyundai RAM in it. I purchased a 1 GB DDR PC2700 333 MHz RAM chip (again, it was Kingston) and put it in the laptop. Here's what happened:
1. Computer totally locked up 3 consecutive times. So, I reversed the RAM chips.
2. Now the computer starts ands seems to run, albeit temporarily. Again more crashes.
3. I took out the 512 MB Kingston chip and replaced it with the other 512 MB chip, while leaving the 1GB chip where it was. Again, it would crash the computer or bring up UNIX script on my screen.
4. With the other 512 MB chip I now reversed its location with the 1GB chip. Same problem.
I thought Kingston RAM was supposed to be very good???
Has anybody else run into this problem?

There are 3 brands that work reliably, which are Kingston (as you found out, not their valueram line), Crucial, and Samsung. You can scan these discussions to see what others may work for people. Crucial and Kingston can be bought through their websites, or Kingston will link you to some online merchants who sell their memory. Samsung is sold through distributors, of which OWC is one at http://www.macsales.com , or you might be able to pick up locally. All carry lifetime warranties, and Crucial guarantees if you buy memory chosen throught their memory selector that it will work in your machine.
Possibly in the category of more than you want to know, the Apple architecture uses memory bus slewing, which helps to control battery usage and heat generation in the Powerbooks. This can present challenges to the memory itself, which is why some memory, while meeting Apple specs, won't work. You can google on 'powerbook bus slewing' to read the Apple developers note with more information.

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Message was edited by: Meshal

Meshal wrote:
I tried all 4 ram sticks in both slots and even tried switching the ram sticks around. I did clean them though. The computer will only boot up with a new 2gb ram stick and an old 1 gb ram stick. I think its something with the computer rather than the ram sticked themselves.
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Jammer:
Beefing up your RAM will probably do you more good that Leopard. Wait a while until the dust settles and the wrinkles are ironed out before you grab for Leopard.
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Message was edited by: mirage.jee

Ram woes?

Maybe you guys can give me a clue.
In the last few weeks I've updated my G3 which has a G4/600 processor with a SATA 300gig HD. All is great. Drive is nice and quiet and now have plenty of room.
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Possible RAM woes!

Well..after posting a question about heat/sluggish performance..got a nice response from the Hatter. Among his many suggestions was to get copy of MemTester (or something like that..). Well, I did, and after I ran the program, the word "FAILURE!!" was scattered all over the report! Question is..does a "failure" report mean my whole bank (4X512) is bad?..or, does it take just one bad chip to earn that label. I'm thinking about taking out the two original Apple chips (about 5-6 years old) and seeing what kind of report I get with just 1 GB of new chips that I added last year. Good idea? If I decide to replace two chips, can I get a couple from OWC and mix them in with another brand? (same specs). By the way, after running initial test, I removed and reseated all memory, and got far fewer failure notices, but still enough to alarm me. Thoughts?? Thanks

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Is there an address of where it fails? It only takes one DIMM of one chip to be bad. Go back to the other post and link to MacIntoch's BAD RAM report (I know it is long, but it is helpful in understanding what is happening).
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RE: G4 17" Aluminum (1.33 GHz) RAM Woes....

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