Dell M90/FX2500M as replacement for 9400/7800Go?

Fellow gamers,
My bro's got a paid order in for a Dell 9400 2.13ghz dual core with 2gb mem, 100gb 7200rpm, 7800go 256mb, 1920x1200 display + bluetooth etc options.

Dell cannot deliver the 7800go, check e.g. http://www.theinquirer.net/?article=30592

They are now offering my brother the Precisison M90 2.13d with 1gb 667mhz memory (not available with 2gb, and 4gb costs about $15k!!) and the 2500M with 512mb, same screen and options.

I have found some info, but not really that much with real meat on it -
http://www.mobilitysite.com/2006/03/dell_precision_m90_and_m65_announced.php
http://www.mobilewhack.com/reviews/dell_precision_m90_notebook.html
http://www.digitalvideoediting.com/articles/viewarticle.jsp?id=38515-1

How will this compare with the 9400 - is it worth going for it? I.e. will it at least deliver the gaming performance of the 7800go - if required with some driver manipulation?

Also, y'reckon a 3rd party memory stick will be a possibility, e.g. to replace 1 to get 1.5gb at least?

Gaming performance is the premium interest - Anarchy Online, World of Warcraft and upcoming titles like Age of Conan (which will require lots, lots more grunt the aforementioned). We'd really appreciate your insights.

Cheers,
Aratahu
// whose 2.13ghz 9300 with 6800GO, 1920x1200, 100gb 5400 rpm drive, 1gb mem inspired the order of the 9400.

 

Definedly yes. See the other topic on 7900 & 2500M.