Bad memory modules

I have an early 2008 mac pro. I bought 4gb of ram from transintl.com and had it installed. In riser A there was the 2 apple factory 1gb modules. In riser B the transintl modules - 2 x 2gb.
The ram was recognized fine with a total of 6gb. After about a month and half the transintl started only showing 2gb of ram ( 1gb each module, when it should have been 2gb ). So I returned the ram to transintl and ordered another 4gb of memory because I didn't want go without the ram. So installed the new ram, and after about a month the new ram went back down again to 2gb.
I then wanted to rule out the memory bays from being the issue. So I looked inside the mac pro while running and the red light was on for the bay that had the transintl ram. I then removed the transintl ram and swapped the good Apple ram into the memory bay that had the bad transintl ram. The Apple ram worked fine in the drive bay that originally had the transintl and the red light did not go on. So I don't believe it is a motherboard/memory bay issue.
I'm also running iStat in the dashboard and it is showing the Mem modules B1 and B2 ( that have the transintl ram ) as running at 151-159 degrees fahrenheit. The Mem moduels that have the Apple ram, A1 and A2, are running between 141-151.
The B1 and B2 modules are in the lower riser, closest to the ground and are obviously running hotter. Are these operating temperatures normal or could they be causing the problem? Maybe the heat sinks on the transintl do not work well enough?
My system has been stable and I have not had any kernel panics or other instability. I ran tech tool deluxe and it didn't find any issue with the ram. I need to do further tests with memtest.

I've been a Mac user since 1984 and I have never heard of "transintl". I think your getting bad Ram. You should stick with a company with a known track record for providing Apple spec. Ram: Kingston, Crucial, and Ramjet
Message was edited by: macbig

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