Installing more ram on Vista

  InCog 18:08 04 Mar 2009

I've discovered that 32 bit Vista only utilises up to 3.25gb of ram. My Dell C521 currently has 2 x 1 gb of DDR2 SDRAM non ECC, dual channel at 533mhz. I have two spare slots.
So the questions are:
1. do I need to install new ram in pairs?
2. If so, should I buy 2 x 512mb or 2 x 1gb - the former seems hard to find?
3. If I buy ram at 667 or 800mhz , am I right in assuming that it will run at the speed of the slowest pair (i.e. 533mhz)?
4. Will I notice much difference with an extra gb?

  thms 18:55 04 Mar 2009

1. Yes if you want to use dual channel
2. 2 x 1GB would be your best option
3. It is best to install all ram of the same frequency. As you say it will run at slowest frequency.
4. Here's the hundred dollar question. It depends what you will be running on your computer. If you are doing video editing or something like that you will notice the difference. If you are doing basic computing tasks you will not see any benifits.

While Vista32 only sees 3.5GB it will do no harm installing 4GB.

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