memory upgrade question

  jimmybond 17:13 04 Dec 2005

I have an Asus A7V8NX motherboard with two out of three memory slots used (2 x 256 PC2700 DDR).
If I want to increase system memory (either to 768 Mb or 1GB), does this need to be done in 'pairs' - or can I just bung an extra 256 or 512 module in the spare slot?
e.g. one like this click here

  Jeffers22 17:22 04 Dec 2005

No need to do it in pairs - that goes back to SIMM days. I would just make sure I put in PC2700 DDR to match what you have already - I'd even try to get the same make if I could. Not absolutely necessary, but it's what I'd do.

  jimmybond 17:25 04 Dec 2005

ok thanks for the info, does it matter if it's a matching 256 module - would a 512 sit next to the 256's ok?

  GaT7 18:01 04 Dec 2005

"...would a 512 sit next to the 256's ok?" - yes, should do. However if you run your memory in dual-channel, it may be affected if you add a 256Mb or 512Mb module in the 3rd slot. Check your motherboard manual for this.

Also, single/double-sided memory may not be compatible with each other, &/or dual-channel may not work with such a setup.

I'm using a Gigabyte GA-7N400 Pro2, with 4x256Mb running in dual-channel (2 pairs of different branded single-sided PC3200 memory). My motherboard manual gives a table for the setup of dual-channel/non dual-channel click here. Have a look in yours. G

  slimbo51 20:02 04 Dec 2005

Its also advisable to put the largest ram chip in slot 1 if ammount of ram if different for all or some of the chips.

Slot 1 is usually the one closest to the proc.

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