I recall there being some hardware considerations to make regarding compatibility with Aces High, so I figured a post before I get to work would be a good point, as I play AH primarily, but also want to play America's Army 3 when its released in a few months. AA3's recommended setup will be met and probably exceeded with my new rig.
There is a spinning clipboard issue with the AMD dual core CPU's. There is a patch for it that, IIRC, simply shuts down one core.
Are there any concerns with GPU architectures or drivers? I know my current ATi card cannot support the game if I update the driver, according to Skuzzy. Do i need to stick with nVidia cards for GPU??
ATI and Nvidia will both run this and other games just fine but the driver support for Nvidia cards is much better. Regardless of what type of budget you have if you're going Nvidia stick with the G92 chipset or better (9600 GT up).
I recall hearing about some AH issues with Crossfire or SLI setups, and I am not sure I want to do that, but it may be worth investigating.
I'd stick with one good card and upgrade it later if you need to. Aside from needing more power for two cards in SLI or crossfire there can be other issues with certain set-ups. I know this from experience.
How about multi-core CPUs? Issues? Benefits of going one way or the other?
Dual cores and up are the current standards. You really don't need a quad core unless you're doing professional graphic or video editing although they will generally run spreadsheets, virus scanners, etc. faster than a dual core. On the other hand they generally run games slightly slower.
Are there any major core updates for AH planned in the next few years that would possibly render my system insufficient or less than ideal should I choose some particular architecture or setup?
It's doubtfull as long as you're building a decent system. AH tries to accomodate the low end user.
DDR2 versus DDR3 RAM issues?
No issues other than money.
I will likely be going the Intel P45 route, but that may change depending on how the market advances in the coming months. I will surely be sticking with Windows XP.
Don't discount the Nvidia 700 chipsets. They are very stable with a lot of overclocking and other flexibility.
Hope that helps.