BTX form factor, RDRAM, and Ageia PhysX cards are other examples of old PC parts that failed to stand the test of time. Computing has evolved a lot over the years, and the modern-day computing ...
BTX: 12.8" x 10.5" -- Released in 2004 by Intel as a replacement for the ATX form factor, BTX boards brought improvements including better thermals for power-hungry parts such as the Pentium 4.