God, yes, the first option! The second system would get reamed horribly, mostly due to an underpowered CPU and a RAM shortage. The somewhat better video card wouldn't be much help.
Btw, you know RIMMs have to be installed in pairs with the i850, right?
<b>WARNING!!! WARNING!!! I couldn't resist altering the choices a bit, despite your request.</b> If this annoys you, ignore all the following and accept my apologies.
I'm assuming that you're doing this comparison with both costing the same amount...and that you already have the PC2100 memory. Soooo...
...in that case, trim off the hard drives (both the same) switch the i850 to a P4X266 (so you can use your old PC2100), and isolate the choice to motherboard, CPU, and video card.
Athlon XP 1800+ (1.53GHz) with HSF: $224
EPoX EP8KHA+: $102
GlobalWin FOP32 or similar HSF: $18
Eagle GeForce 2 PRO 32MB (what kind of brand is Eagle, btw?): $74
Total: $372
P4 1.5GHz Socket478: $146
ECS P4VXMS (VIA P4X266 chipset): $80
GainWard CardExpert GeForce 3 64MB (pre-Ti<i>XXX</i> generation): $239
Total: $465
Odd...$93 difference...which GeForce3 were you considering, the Ti200?
Money you save by taking a GF2 Pro over a GF3: $165
Money you save by taking a P4 1.5GHz over an AthlonXP 1800+: $79 (CPU) + $22 (motherboard) = $101
All prices were the cheapest prices taken from a quick query of PriceWatch.
You could easily drop your AMD CPU speed to a 1500+ ($130), still have a better performing CPU than the P4 1.5GHz, and save $96.
Kelledin
<A HREF="http://www.linuxfromscratch.org/" target="_new">LFS</A>: "You don't eat or sleep or mow the lawn; you just hack your distro all day long."