IBM is joining the rush of server manufacturers launching systems running on Intel quad-core Xeon processors.
The IT giant introduced four rack servers and one blade server using the Xeon 5300, with starting prices ranging from US$2,400 (£1,049) to just over $3,000 (£1,573).
The new x3550 and x3650 are available for order beginning 14 November, and the x3400, x3500 and BladeCenter HS21 will be available in January, IBM said.
HP is the next vendor scheduled to introduce new server models running the Xeon 5300 processor next week but is withholding product details until then. On Monday, Dell introduced server, blade and workstation computers using the quad-core design.
Intel's chief rival, AMD is expected to introduce its quad-core processors in mid-2007.