On Aug 26, 2010, at 3:46 PM, Eric Volker wrote:

> Does anyone know of a freeware RAM tester? I just added 2x256 DDR400 sticks 
> of RAM to my G5 from my scrap heap, and want to make sure the sticks are 
> actually good. The G5 boots, but that's not a guarantee of stability. The 
> machine is a dual G5 Powermac, if that makes a difference. I do not have a 
> copy of the Apple Hardware Test..
> 

Find and download the free utility Applejack in the version that supports your 
OS. Make sure when you install Applejack that you click on the option box to 
install Memtest. Once installed, reboot, holding down the Command and S keys to 
enter single user mode. Then read carefully and enter the command to enter 
Memtest. IIRC, you have to type X and then hit Enter.

Memtest is probably the best RAM tester out there. You might want to start the 
test late in the evening and let it run all night to do a thorough job.

-- Jim Scott

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