Ok, back on topic.
So you bought a Dell. You like those blue guys on TV, and figured that a new P4 would be really fast.
Your problem is twofold:
1. You have an OEM motherboard with limited options, and a BIOS that limits your performance.
2. You have the slowest P4 made, and in socket 423 to boot.
Bit of a tricky situation. Here are your options.
<b>Most expensive:</b> get a full combo like <A HREF="http://www.tufshop.com/store/msi_p4.html" target="_new">this</A> (top of page) for $508.72 after shipping. MSI board with the SiS645 chipset (DDR). Per PriceWatch, two 256MB sticks of PC2700 is $144, brining the total to $652.72, which is pricey, but it's a good system. However, if you go that route, look for something with a Northwood P4. It's designated by the 'A' after the clock (P4 2.0a, 2.2a). They are faster and much more overclockable.
<b>Least expensive:</b> Get a P4 1.8 or so, $194 on Pricewatch. The problem is, if you stick with socket 423, you're just squeezing blood from a stone. Bad idea.
That is of course, if you don't want to move to an AMD platform. If you do, there are plenty of people to advise you where to go.
The i850 chipset is a very, very good chipset. The only problem is when you get it on a crappy motherboard (which may be the case), or it's simply poorly set up (which may also be the case).
<font color=orange>Quarter</font color=orange> <font color=blue>Pounder</font color=blue> <font color=orange>Inside</font color=orange>