will this work?

Yes...it will.

I had an XPS 400 for about 2 years before I gave it to my daughter and I ran 4x1GB Corsair XMS2 Pro for about a half a year. Worked great for me anyway. The only issue will be the RAM speed...the motherboard that comes in the XPS 400 can only run RAM @ 667MHz and this can not be adjusted in the BIOS.

It might be a waste of money to put into a XPS 400...any value RAM will be fine.

This is what I had in it...
http://www.corsairmicro.com/products/xms2pro/default.aspx

This is what she has running now....bought 2 sets and had no issues yet.
http://www.newegg.com/Product/Product.aspx?Item=N82E16820134046

I know a lot about the Dell XPS 400 if you ever have any issues just start a thread and I will find it.
 
Back
Top