The Alpha 21066, introduced as the DECchip 21066, code-named LCA4 (Low Cost Alpha), is a low-cost variant of Alpha 21064. Samples were introduced on 10 September 1993, with volume shipments in early 1994. At the time of introduction, the 166 MHz Alpha 21066 was priced at US$385 in quantities of 5,000. A 100 MHz model, intended for embedded systems, also existed. Sampling begun in late 1994, with volume shipments in the third quarter of 1995. The Microprocessor Report recognized the Alpha 21066 as the first microprocessor with an integrated PCI controller.