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mac pro ram: ECC errors
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Forum Regular
Join Date: May 2000
Location: USA
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Hi,
I installed new 2x1GB sticks in my Mac Pro 10 hours ago, and have been running distributed computing projects to max out the CPU for the last 6 hours or so. I'm getting 4 ECC errors on the second stick. Memory temperatures around 160 degrees F. Should I RMA the RAM?
Thanks--
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someone who loves Macs
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Moderator  Join Date: May 2001
Location: Hilbert space
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This means that this RAM module is faulty. Have it replaced by another one … btw, that's what ECC is good for  
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I don't suffer from insanity, I enjoy every minute of it.
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Addicted to MacNN
Join Date: Jan 2003
Location: ~/
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Originally Posted by OreoCookie 
This means that this RAM module is faulty. Have it replaced by another one … btw, that's what ECC is good for
Excessive heat can also cause ECC errors. The room in which my Mac Pro is in doesn't get good ventilation in the summer and always is 15-20 degrees warmer than the rest of the house. I've had a few ECC errors when room temp has been above 85F, but none when the room temp is cooler. But at least the ECC does its job and corrects the errors
Yeah... going to get a little window AC unit for the computer room. With three machines and 4 monitors, it gets hot.
Might look in to the new fan assemblies for the RAM riser cards that some company is now producing (saw it on xlr8yourmac.com).
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Professional Poster
Join Date: Mar 2000
Location: Ottawa, Ontario, Canada
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Cadever is correct. Heat can cause ECC errors with memory. I'm currently doing a test with my Mac Pro. I've been getting ECC errors when running BOINC and SETI on my Mac Pro, and sometimes BOINC and UT2004. I've gotten 4-5 in the last 3 weeks. I found a little utility called smcFanControl and have revved up the speed of my CPU/memory fan and my exhaust fan by a couple hundred rpms. You may want to give it a try... http://www.macupdate.com/info.php/id/23049
I'm going to see what happens after a week.
Oh and I do have air conditioning in the house. The temp of the house is usually around 23 - 24 C.
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Mac Pro Dual 3.0 Dual-Core
MacBook Pro
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