When I use SLOT 1 on my 1st gen Intel iMac 20", my computer randomly reboots after running a few programs. Very highly annoying.
I've run MEMTEST with some interesting results that don't totally make sense but here they are:
This test is done in Single User Mode, OS X 10.5.2 with PC5300 DDR2 667MHz OWC RAM.
Each Slot test is run individually-none of these tests are run with both sticks installed.
First Test Run for RAM stick A:
SLOT 0=Pass
SLOT 1=Fail but did not reboot on its own
Second Test Run for RAM stick A:
SLOT 0=Pass
SLOT 1=Pass
First Test Run for RAM stick B:
SLOT 0=Pass
SLOT 1=Fail with self-Reboot (computer restarted on its own)
Second Test Run for RAM stick B:
SLOT 0=Pass
SLOT 1=Fail with self-Reboot (computer restarted on its own)
It seems that with RAM A it doesn't reboot by itself in SLOT 1 but it will reboot if RAM B is in SLOT 0.
All signs point that SLOT 1 is faulty.
This computer doesn't have Apple Care.
Last edited by Another_Paul; Feb 25th, 2008 at 03:38 PM.
Test is this: Run Stick A in suspected bad slot with "good" slot empty.
Repeat with stick B
Then: Run stick A in good slot with "bad" slot empty
Repeat with stick B
If computer runs perfectly with either stick in one slot but has issues with either stick in the other you have confirmed and isolated the bad slot.
If computer runs perfectly with one stick in either slot, and fails with the other stick. The issue is a bad RAM chip. Again you have isolated which chip.
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Test is this: Run Stick A in suspected bad slot with "good" slot empty.
Repeat with stick B
Then: Run stick A in good slot with "bad" slot empty
Repeat with stick B
If computer runs perfectly with either stick in one slot but has issues with either stick in the other you have confirmed and isolated the bad slot.
If computer runs perfectly with one stick in either slot, and fails with the other stick. The issue is a bad RAM chip. Again you have isolated which chip.
Sorry, I should have been more clear...Each Slot test is run individually-none of these tests are run with both sticks installed. So it looks like I have a bad Slot 1
Has anybody got a 2GB stick to work in my 1st gen Intel iMac before? That looks like my only option to get maximum RAM for my iMac now.