I had the dual monitors with my old computer and found I didn't really need them. I went thru a couple of video cards with my old computer, don't really them, I have professional quality sound cards, they are made obsolete by the new computer, so I don't need them anymore either. My old computer had an ASUS motherboard with 6 SATA ports, but I don't need them anymore, and something was wrong with it and it wouldn't accept any more that 1 gig of memory, I get 4 gigs upgradable to 8 on the new computer. The old mother board was designed to work with Vista, and Windows 7 upgrade drivers are not available from ASUS. I had to buy a bigger power supply that would heat up the room, don't need it anymore. I had to buy a special cooling fan for the Intel Core2Duo because the stock one was junk and kept falling off the motherboard and the new one made lots of noise, don't need it anymore the new computer runs very quiet and very cool. The old computer would lock up and shut down when it got warm, the new computer runs cool and hasn't locked up once yet. I had to buy and install a Windows 7 license to run the old computer, the new computer comes with Windows 7-64 bit already installed.
The new computer was all put together. I brought it home, plugged it in and it worked first time, no monkeying around needed. The old computer wouldn't post at first because somebody set the power supply switch to 220 volts. Two days messing around figuring that one out.
All in all the new computer is cheaper than the old one and much more powerful. I say it's up to date because it has the second generation i3 processor that was just released a couple of months ago, I'm comparing that to my old Core2Duo which is many years old and now obsolete.
The old computer was one headache after the next and I've already gutted it for parts. It's not coming back---ever !!!