Is non-ECC ram okay? Also a question on temp sensor

[chiefroastbeef]

Hi guys,

I just bought two sticks of Corsair 1333 4GB ram here in Hong Kong for $168USD total. So I currently have:

Slot 1: corsair 4gb
Slot 2: corsair 4gb
Slot 3: Stock 2gb ECC
Slot 4: Stock 2gb ECC

Will the non-ECC be okay? From my research other people have used it without problems, that is the reason I bought it, and plus it is sooo much cheaper than OWC (who is selling 4gb ram for $150). The computer runs great, I am just wondering if there is anything I should look out for in the future.

Also, I don't think the corsair ram I got have temperature sensors, since it doesn't say anything about it on the box. However, on my istat, I am getting temperature readings on all four slots of ram. Does that mean my new corsair ram have temp sensors?

Thank you for answering my silly questions!

 

[mjsmke]

You should not mix ECC and non-ECC moduless in the same bank of memory on any machine. This can lead to all sorts of problems due to the modules being different electrically.

Mixing different brands is fine but they will all run at the slowest speed mudule, which is your stock 2x 2GB's at 1066Mh/z.

Also which Mac do you have? Some have a triple channel controller for RAM.