Well... The P4 isn't the fastest at everything.
The P4 shines in these areas:
Media encoding (Making DIVX files, MP3 files ,etc), playing such files, any 800Mhz computer can handle these. And 3D Rendering programs (like making Animation or 3D artwork).
In certain games and Office productivity, the AMD tends to be faster.
Here's one link:
<A HREF="http://www6.tomshardware.com/cpu/20030217/cpu_charts-24.html" target="_new">http://www6.tomshardware.com/cpu/20030217/cpu_charts-24.html</A>
With the work youre doing, I doubt you'll need more than 512mb. Many of us were doing a lot more with 128mb a few years ago.
What kind of video card are you looking at?
A P3 2.6ghz with a $100 video card would get its doors blown away by a AMD 2600 with a $200 video card.
Also, to save a few bucks, for about $100~110 - buy an AMD Barton 2500, retail version. (I use globalWin for a little more cooling power without paying a lot of $$$, very quiet)
Without adding voltage or Super-Cooler, my 2500 is operating like an AMD 2900. I've only gained 2degress C. in heat. The CPU wasn't completely locked, allowing me to change the multiplier from 11x to 12.5x without modifications.
I get a 3DMark 2001 over 10300 (Vs. 2500 for my old P3-866 w/ GF2MX400) and I get about 60~90fps in UT2003 which is respectable and very playable. As you an see from the link above, having a $300 Radeon9700 can double the frame rate... even lookint at the chart, having a 1000Mhz computer with a KICK ASS video card can result in more performance. (I bought my 4200 when the ATI9700 was $400)
So get the most you can with your money... get a better video card, a bigger monitor ($300 for a good 19" CRT), bigger HD, a real sound card. Having a $60~100 sound card such as the Audigy2 can give you about 10+ fps over the on-board sound on most boards (Nforce Boards are quite good thou)
What other parts are you looking at? What is your buget? I've seen people buy these $20 cheap cases... which have bad air-flow, cheap power supplies, etc... Having a $100 case will last you years and give you less chance of failure.
Pop in a $100 GForce 4200 or 5600 or ATI 9500~9800.
In the real world with what most people do,
Amiga - The Original Power