Item Intel Keifer Intel Harpertown Intel Clovertown Intel Conroe Intel Woodcrest Sun Niagara
Release2010 2008 2007-H1 2006-07-27 2006-06-19 2005-11-14
Die size 1066 - 1333 MHz
Bus speed 1066 MHz 1333 MHz 150-200 MHz, 3.1 GB/s
L2 cache 4 MB 2-4 MB 4 MB? 3 MB, 12-way set ass. 4 banks
L1 cache 8x [16KB I, 8KB D]
Process 65 nm 65 nm 90 nm
Core speed 1.86 - 2.67 GHz 1.6 - 3.0 GHz 1.0 - 1.2 GHz
Power 60-70 W LV:40W, 65W, 80 W 72-79 W
Form factor LGA771
Core voltage
Price $210 - $529 $230 - $750
L3 cache
Memory 4x DDR-2 (20 Gb/s)
Type Desktop, Dual cores Server, 2 cores Server (4, 6 or 8-cores)
Core Conroe Woodcrest Niagara
Pipeline 14 stage 14 stage 6-stage

2010 Intel Keifer 32-core server processor said to be 15 times faster than Woodcrest...

2008 Intel Harpertown Server processor to succeed Clovertown.

2007-H1 Intel Clovertown Server-version of Allendale. 4-core chip with 4MB of cache. (Previously referred to as Cloverton.) Claimed to be 2 Woodcrest cores in one package. Part of the Stoakley platform. Uses the Seaburg chipset.

2006-07-27 Intel Conroe Major redesign of the desktop chips based on the mobile chip Merom. Should use the same bus as Merom and Tukwila. Part of the Averill platform. Said to be used in future Macs. Will be named E6300 (1.86 GHz, 2MB, $210), E6400 (2.13 GHz, 2MB, $230), E6600 (2.40 GHz, 4MB, $315) and E6700 (2.67 GHz, 1066 MHz, 4MB, $529). A value-segment version known as Conroe-L will be introduced in 2007-Q2. Will also be used in Uniprocessor Xeon chips (3040, 3050, 3060, 3070)

2006-06-19 Intel Woodcrest DP server version of Conroe. Will have FBD (Fully Buffered DIMM) which is said to allow for "stupidly large amounts of RAM". Said to be planned for future Macs. Will be named 5160, 5150, 5140, 5130, 5120 and 5110.

2005-11-14 Sun Niagara Blade processor including 8 Afara-created (simplified UltraSparc I) cores on one die. Each core handles 4 threads and supports Switch on Event MultiThreading (SoEMT) like Montecito. Launched in 2006. (Previously said to be based on UltraSparc V cores). Named UltraSparc T1 at release.