As far as I am concerned you are better off on P35 x38 or x48 DDR2/DDR3 than Nvida but thats just my opinion
Glad you brought up the X38 and 48 Boards Nick, Yes been awhile since i posted here, But, i just spent a month trying to talk a customer into a DDR3 board, I suggested the 48 but he went with the 38 instead.
I set the rig up with a C2D 6850 clocked at 3.6 with Gskill DDR2, PC8500 4-4-4-12-2T couldn't get her to post at 1T no matter how I tweaked it

The Sysytem was based on all your suggestions with HD's 1-OS 2- FS9 3- FSX , Got to say that sure is a sweet deal running like that, Hes got a 8800GT 1Gb EVGA card on the PCIE 2x slot and it puts to shame my 8800GTX 768 card on a Q6700 and 4Gigs pc8500 same clocks only I am at 3.4 on the CPU.
Any hoot, enough of my rambling. I was wondering, I know the new market cards will be coming out Q3 I believe, and I want to go DDR3.
I am assuming that the Intel platform is once again going to change this year. so the x48 is out, Can you throw me a bone on what I am looking for later this year?