Rath Darkblade wrote:OK, I'm not going to go into the overclocking vs. non-overclocking issue!

I'm not particularly interested in overclocking - I'm aware that it exists, and have read about how to do it. I have never actually tried it because I know the risks are great, particularly for beginners like me, and I probably won't get much more performance out of it. So, you can call me an old conservative if you want, but I'd rather avoid these risks if possible!

I've tried overclocking before, just not on my current PC. I did it a long time ago when I had an Athlon 1900+ (or whatever the hell it was called). The card on that PC was a GeForce 3 Ti500, so that gives you an idea of just how long it's been since I've overclocked a video card.
Just so you know, I couldn't overclock the GF3 very much. If I pushed it too hard, I'd get artifacts and that's when you know it's time to back down.
Rath Darkblade wrote:I know the Radeon 8550 is ancient. At the time I got it, I wanted to play TES4: Oblivion, and that card would run the game and was all I could afford at the time. (This would have been 4 years ago, and I never really needed a better card).
The good news is video cards aren't as expensive as they used to be. The top-of-the-line cards still cost a lot, but you won't need the "latest and greatest" video card to play most games, including DA.
If you want to try taxing your PC, give
Fallout 3 a whirl. It'll play on lesser machines, but if you want every graphical option turned on, you'll need a damn good PC and video card or expect to stutter a lot.
I've played F3 on my PC and although it runs well most of the time, it has some problems in larger areas, like cities. That's probably due to all the NPCs moving about and such.
Rath Darkblade wrote:That's interesting about the P4 - if I'm still running a P4, I'm not sure why my machine isn't hotter or noisier, particularly as I have two fans. I can hear them both going - they're not completely inaudible - but the overall effect is definitely not noisy.
Well, my machine is clocked higher than yours. You said you have a 3 GHz and mine is a 3.6 GHz. Theoretically, the differences shouldn't be that great, but who knows? Maybe that extra 600 MHz makes my machine a lot hotter? I also have more than two fans and both are very high powered. So that probably contributes to the noise as well.
Rath Darkblade wrote:Hmm.
Would my current machine be able to run DA? I'm not too sure, particularly as I only have 1Gb of RAM in total, and the game requires a minimum of 1Gb of RAM just to run. I'm also not too sure if my processor could handle it. Also, it's not just a question of running DA, as my desktop is now 7 years old and quickly approaching its 8th birthday - so I'd rather do something before it kicks the bucket.

Any thoughts there?
Well, here are the game-relevant specs on my PC:
Pentium 4 3.6 GHz w/HT
2 GB of RAM
ATI Radeon 3870 (512 MB)
So yes, I have a faster CPU, more RAM and a more powerful video card. However, the major difference here is your video card, which
probably wouldn't be good enough to run DA. Other than the video card, the differences between our two machines are rather small and probably wouldn't be a deciding factor.
If you're absolutely sure you want DA (and it sounds like you do), I'd suggest buying it right now. Test it out on your current machine and try it with the video card and RAM you have now.
Chances are it won't run or won't run well, but at least you'll know for sure. You might as well find out if you can run DA (and to whatever standard you desire) before purchasing an entirely new machine.
If you're dead set on getting a new PC (regardless of DA), then go do that first. However, if your major reason for upgrading is DA itself, I think testing it out now couldn't hurt. The worst that'll happen is you can't play DA until you get your new PC, which is what you're assuming anyway.