This is my first non-AMD machine (for personal use) since 1996.
NOTE: New parts (January 2014) are the CPU, Motherboard, SSD, CPU Cooler. Other parts date back to older builds - I tend to do a rolling build, upgrading a bit at a time until the architecture no longer allows it.
I replaced a tri-core Athlon-II X3 440 that was unlocked to 4 cores and 3.45 ghz. So while obviously the new chip (i5 4670) is much faster on paper, seat of the pants feel isn't that much bigger.
I was going to re-use my OCZ Vertex and a "new" OCZ Agility SSD, but it turns out both are incompatible with Haswell! So I had to drop for a Crucial M500.
The case is an elderly but tough Dell XPS 730 case. It has "nvidia ESA" which I can't access without an nVidia card (I have an ATI in there now) but the current settings are fine as far as color and front fan speeds. CPU fans are motherboard controlled.
It works well except that I'm getting some audio interference which is preventing me from using my speakers at higher volumes. I've tried re-routing wires but it persists... :(