I have 4Gb on my 1710 = 667mhz.
The latest BIOS allows you to see 3.25 gb - see attachment.
The older one you would only get 3.0Gb - same was true on my D820.
It shows 3.25 on Vista too.
Hope this helps.
Has anyone installed the new urgent update for the 1500 wireless card for the XPS M1710?
v.18.104.22.168 / 22.214.171.124, A10
I installed the update and it forces the 1500 card into .11g mode. The max throughput I get is 54mb.