- Specification is the word you're looking for.
- 2GB will run a huge map fine. Although rigs these days come with 4GB at not very much extra $. I doubt they actually had 4GB to use when they were *making* this game and testing huge maps. Extra hardware obviously usually makes things go a tiny bit faster. Although in this case, over 2GB
requires (or so I was told) 64-bit OS. And while 64-bit OS are working properly, a lot of drivers for various hardwares *aren't* working too well with the 64-bit OS. Another option is to just install a 32-bit OS onto it like I have - occasionally memory leaks (not as bad as it sounds once you figure out this is the problem).
- The thing about hard drive is, most built units will already have a harddrive in it and the OS installed onto it. So if you order a different hard drive the shop has to redo some work and you end up not saving much money. Downgrading to 200GB from a unit that already offers 500GB might just save you as little as $10~20.
- DO pay some attention to the processor. I think anything that has dual-processors is more than enough.
- DO pay some attention to the graphics card (and a power supply that can feed it). A 9400 is managing well (but not heavenly flawless) on max graphics settings. Although if you settle for average settings then any budget series 8 or 9 card should do.
- Building a computer is not a huge challenge, but you will run into a few hiccups. If you got the money to spend + not so much the time to build + don't really care about learning to plug things onto the motherboard yourself, then just buying a ready one is still the much simpler way of life.
This is my new computer (just base unit no OS/monitor/mouse/keyboard though)
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWNX:IT&item=270351229872
And I installed old school 32-bit Windows XP on it (not exactly recommended).
It's running Civ4 + 2 expansions pretty brilliantly.
As you can see, it works out to roughly $450. And I think this is the the run of the mill budget computer these days, on top of that I think things are most likely slightly ahead on your side. Trying to go a little cheaper will probably get you a much inferior computer while saving only a little cash.
If you need a new monitor, etc, those will add up, but then again, those are pretty easy to add.