Post courtesy of Winston_
Sustainability is a critical factor in system considerations. It's all relative to what you exactly want and will be using it for, we have gamers, we have Media freaks (the home entertainment type people), and we have a less tech savvy individuals who just want it for individual use.
This is in response to the first pages configuration list:
Lets take it from an 'almost' accurate sustainable approach.
Thinking in terms of future software demands, the hype with 64 Bit going mainstream, have you considered going for a 64 Bit based processor?
Motherboards, there's so many, depending on the socket type 64 Bit CPU you get.
RAM Sounds decent enough, and just about up to par for all categories of computing use.
Harddrive - It's not only the piece of item that stores your data in contributes alot to the overrall performance too, in some cases. Is it a SATA Hard Drive?
Monitor: Good enough, if you're a gamer, you go for a LCD monitor with a response time of < 16ms.
Make sure you don't get a dodgy case, you might cut yourself or others when they install components in the future. Plus a big case is healthy for airflow.
Video Card: One again depending on your needs, the cards sufficient for now.
DVD: I've had personally bad experiences with Sony, but recently i got a new Sony DVD Dual layer, it's meeting it's standards, however i heard the NEC ones are decent.
Sound Card: Back to the whole user needs, if you're a entertainment freak, otherwise, good enough.
Speakers: Intended to get this one, it cost about $ 40 more, (believe me, every dollar counts when it comes to a new system), get the x-530 Logitech ones, still 5.1 speakers, but $ 99, excellent buy. the 640s are an old range i believe.
Keyboard: Up to you
Now, some people might have said: get a PC compliant for Longhorn, this is all relative to what's your general upgrade cycles, 6 mths? 12 mths? etc... Being a Longhorn enthusiasts, and actually knowing the real side of Longhorn as opposed to some people in this thread. If you took some of the changes i mentioned, the system will be pretty safe for Longhorn. Let me give you a little jist about it, There's about 4 Core pillars in Longhorn, 1 Pillar, won't be in it in the final, due to some reasons, which i can't be fucked, explaining about, two pillars, will be back-ported to Windows XP and 2003, now i hope you understand these two pillars aren't visible in the OS, it's a programming side of thing for developers to leverage these two pillars. It doesn't render XP and 2003, ad being Longhorn. From the looks of things, many of todays recent systems, can support Longhorn without much issues, don't listen to people when they say Longhorn needs 2gb of RAM, because these are idiots who know nothing, XP needed more RAM because the user-interface was bitmap rendered through Visual Styles, Longhorn uses Vector to render their UI, it's different. The two main issues that still wouldn't be definite will be, whether or not a 32 bit version will be available (i'm sure it is), but that's why going 64 bit will be a little safer, and also graphics card, the demand will change as time goes on, but yeah.
In response to one of the posters, addymac? i think, yes there are boards supporting AMD 64 with PCIe, i just got one, running on socket 939, the ASUS A8N-SLI Deluxe nForce 4 Motherboard.
Anyways, happy computer buying !
</Winston_>