Intel once again has delayed the introduction of Core i5, the new mainstream desktop PC platform, Lynnfield processors (tentatively Core i5) and 5-series chipsets, from July as originally scheduled, to early September 2009, according to sources at motherboard makers.

However, Core i5 processors will be available early for retail sale in late August, while P55-based motherboards will appear even sooner in mid-August, the sources noted.

Due to the global economic downturn driving down market demand, Intel expects the launch will allow more time for 4-series inventory to deplete.

Intel plans to launch three Core i5 CPUs with frequencies of 2.93GHz, 2.8GHz and 2.66GHz and priced at US$562, US$284 and US$196 in thousand-unit tray quantities. All of them will feature a TDP of 95W. The P55 chipset will be priced at US$40.

The entry-level Havendale processor is scheduled to launch in January next year, while P57, H57 and H55 chipsets will launch in the first quarter next year.