[citation][nom]billj214[/nom]I finally built an X58 Core i7 to find out only months later it's an antique![/citation]
I had a very similar experience, except this was when I first got into building PCs, back in late 2006, when AMD was at the top of their game. I finally finished building an amazing 939 system with an Asus A8N32-SLI Deluxe motherboard and Athlon 64 X2 3800+ with ONE WHOLE GB of DDR400 RAM and a 7600GT.
But then, what seemed like only a few weeks went by and AMD released their AM2 platform, compatible with DDR2 memory. Suddenly all 939 components went extinct faster than the dodo and DDR memory became an endangered component as DDR2 became cheaper, faster, and more plentiful. I was like, FML. Of course, not long after that Intel released their Core 2 Duo line of processors and the rest is history.
Fortunately, that 939 system served me well until September of this year, where I finally decided to upgrade to an i5-2500K, with a motherboard that is ready for Ivy Bridge and PCI-E 3.0. I also upgraded to a 560 Ti which I got for LESS than that 7600GT I first bought in 2006 for $186!
Only 6 years and the landscape has completely changed. Now there are Core i5s and i7s everywhere and AMD no longer competes with Intel in desktop CPUs, though arguably that has been the case for a while now.