I haven't read the entire thread but I agree with Crono and ReNo. I'll list out a few things I can think of
- Don't buy a branded machine. It's not worth the trouble. You're only
going to get a s**tty warranty and really horrible tech support.
Instead, build it yourself, or, if you can't do that, find a trusted
store run by a friend or some acquaintance and ask them to assemble one
for you.
-Look out for the AMD Dual cores as well. I have heard that they draw
lesser power and heat up less, AND they're a whole lot cheaper. I
haven't been following dual-cores too closely of late though, so please
verify this.
-DVD drive? I don't see a DVD drive. At least get yourself a DVD
reader, they're very cheap. A combo DVD/CD writer would be excellent
TBH.
-Not enough USB ports. Only two? You will use them up and have no space left
-Go for a separate audio card if you can afford it. Heck, my
five-year-old es1371 gives better sound than my "new" intel onboard
card.
-Encarta?! Works?! Waste of money. Use Wikipedia, and you'll eventually "acquire" Office anyway (it's inevitable, methinks).
I have recently seen a machine with similar specs built for around
$1100 give or take 50 based on the conversion rate and inflation and
suchlike. And don't worry about your CSS framerates. They should be
very good with this setup.
Edit: Just saw your post above. Gigahertz aren't the best indicator of
performance. Look for benchmarks and stress-tests on the net for a
gaming PC with a similar setup. You'll often notice that all the
gigahertzes and megahertzes that Intel and AMD claim don't equate to
performance gains.