Dell's latest Inspiron desktops are designed for regular home users. The 530/531 comes with 1.6GHz Celeron / dual core AMD Athlon 3800+ or 4400+ processor, Intel 3100 or Nvidia GeForce 7300 LE/8600GT/8300GS graphics, up to 4GB RAM, 1TB hard drive, 17-/19-inch monitor, DVD burner, and Vista. The 530s/531s features Sempron / dual core Athlon / Core 2 Duo processor, ATI Radeon X1300 128MB and same other specs.

Both of them starts at $349.

Source [Inspiron 530]
Source [Inspiron 530s]