CPU Module
Option #	Manufacturing Part #	Description	Previous Part #
X2590A	501-6620 [F]	464MHz UltraSPARC II Module (8MB Cache Blaze) IBM Sombra Mirrored Data SRAM IBM Mirrored Tag SRAM	501-5816 [F]
X2590A	501-6623 ¹ [F]	464MHz UltraSPARC II Module (8MB Cache Blaze) Sony Espejo Mirrored SRAM Sony Mirrored Tag SRAM	501-5798 [F] [S]
X2500A [S]	501-2941 [F]	167MHz UltraSPARC Module (512KB Cache Blackbird)	n/a
X2510A [S]	501-2959 [F]	167MHz UltraSPARC Module (1MB Cache Blackbird)	n/a
X2530A [S]	501-4178 [F]	250MHz UltraSPARC II Module (1MB Cache Blackbird)	n/a
X2550A [S]	501-4836 [F]	250MHz UltraSPARC II Module (4MB Cache Blackbird) SRAM 100-5528	n/a
X2560A [S]	501-4363 [F]	336MHz UltraSPARC II Module (4MB Cache Sapphire-Black)	n/a
X2570A [S]	501-4995 [F]	400MHz UltraSPARC II (4MB Cache Sapphire-Black)	n/a
	501-5425 [F]	400MHz UltraSPARC II (4MB Cache Sapphire-Black)	n/a
	501-5585 [F]	400MHz UltraSPARC II Module (4MB Cache Sapphire-Black)	n/a
X2580A [S]	501-5838 [F]	400MHz UltraSPARC II Module (8MB Cache Sapphire-Black) IBM Sombra Mirrored Data SRAM	n/a
X2580A [S]	501-6008 [F]	400MHz UltraSPARC II Module (8MB Cache Sapphire-Black) IBM Sombra Mirrored Data SRAM	n/a
X2580A [S]	501-5235 [F]	400MHz UltraSPARC II Module (8MB Cache Sapphire-Black)	n/a
	501-5661 [F]	400MHz UltraSPARC II Module (8MB Cache Sapphire-Black)	n/a
	501-5762 [F]	400MHz UltraSPARC II Module (8MB Cache Sapphire-Black)	n/a
X2580A ² [S]	501-6624 [F]	400MHz UltraSPARC II Module (8MB Cache Blaze) Sony Espejo Mirrored Data SRAM Sony Mirrored Tag SRAM	501-6009 [F] 501-5815 [F] 501-5814 [F]

¹ Replaced 501-5798 in February 2003
² after April 2001
NOTE: UltraSPARC Module Installation

Table Legend
[F] = Field Replaceable Unit (FRU) [C] = Customer Replaceable Unit (CRU) [S] = Supported, but can no longer be ordered with this system [N] = No longer supported for this system Price = Price this Part