Should work OK. 

HERE is the Crucial Memory listing for the Studio XPS7100 (what most of the techies on here recommend for non-Dell memory).

I wanted to do the same Boomer50. I went to the site you suggested, I am still a little lost, I am not a computer PRO.

If I understand it right, Does it mean it can only goes in pairs? Cannot be different #gigs?

For example, it has to have four of the 4GB (has to be all the same kind) & I cannot use two 4GB and two 2GB to make 12GB? Am I right on this one?

Thanks,

Loreta

You want to install in identical pairs, but different pairs can be different from eachother.

So you can have 1 pair of 2GB dimms and another pair of 4GB dimms.

Hello Boomer50,

I did what Dev Mgr suggestions :emotion-1:.

I left my old memory in their slots (two - 2GB = 4GB).

Then, I added my new memory in the remaining slots (two - 4GB = 8GB).

My computer automatically recognized that I now have a total of 12GB of memory.

It is safe to do & it is AWESOME :emotion-2: !!!!

I just realized that this post was written December 2011, hope I was not too late to give you an answer.

Maybe others can learned from us.

Just me,

Loreta:emotion-11:

Thanks for sharing your knowledge there Dev Mgr :-)

That's good to know!