Hello everyone... Allow me to make some clarifications. lol, because this thread is getting slightly out of hand. First off, the price of the upgrade for the 8890 is circa $800 plus shipping, so yeah maybe 850. With this, here is what you get:
-new lower chassis
-new ac adapter
-new drivers disk
-labor and such
-new mobo, which means:
-10/100/1000 lan (GIGABIT LAN!!)
-5.1 channel analog AND digital sound; so you can use non-spdif speakers to get true 5.1 channel audio, which saves a bundle of money cuz spdif decoding speaker systems are hella expensive
-ATI Radeon 9600 Pro, a directx9 part, which rocks
-the ABILITY to use 800 MHz fsb processors (you do not get a new processor, your old one will run fine in here, and it will NOT underclock, cuz the 800 fsb is 200MHz quad pumped, the 533 fsb processors are 133 quad pumped, 133<200, therefore you will run at your processor's clock speed like usual)
-the ABILITY to use up to 2 Gigs of DDR400 dual channel RAM (you can buy RAM that takes advantage of all of this if you want to trade in your old RAM; the tradein values are posted in the respective thread; if you do not, your old RAM which is DDR266 will run perfectly fine at it's old speed; the ABILITY to use the new RAM means you can upgrade to faster RAM at will in the future)
-DVI output, which means you can use LCD monitors without a converter (much better quality) and it comes with a converter for VGA in case you still want to use CRT
-mini-USB instead of mini-PCI (so any integrated wireless will have to go; you will need to get mini-USB stuff; this is good and bad, cuz it is up and coming and it's better and faster and less power-consumptive if I'm not mistaken, but if you already have mini-PCI, then think about this point)
-HARDWARE RAID, omg, most desktop mobos don't even have that ability; but you will have it whether you are going to use it immediately or not
I'm sure I missed some stuff, but the point is you essentially get a new laptop in many respects. The chassis and keyboard are new, so unless you have a paint job, that's sweet cuz you get a new exterior. The mobo is new and you have much more ability to upgrade. In my view, that means when these new components get cheaper (ie: 7200 rpm hard drives for RAID, 800MHz fsb processors, DDR 400 dual channel RAM), you can get them and take advantage of what they have to offer. So, for the 888x series, it's not too shabby. Hopefully the price will come down in the coming months, too.
As far as the 566x series... I may have missed something, but no one said it was going to be $1000 to upgrade that... the 8890 is a much more comprehensive system. Plus it depends on what they will offer with it. So who knows...
Best of luck to all! I hope this helped some!