| System Board | 
| Option # | Manufacturing Part #
 | Description | Previous Part #
 | 
| X7444A-4 | 501-7462 | 1.593GHz CPU/Memory Module Assembly with 2GB Memory (4× 512MB DIMMs), L | n/a | 
|  | 512MB Registered ECC DDR1 DIMM (SPD 0.0 or 1.0) PC2100 & faster, L
 | n/a | 
|  | 1.593GHz CPU Board Assembly, L
 | n/a | 
|  | UltraSPARC IIIi Heatsink, 
 | n/a | 
|  | 0MB System Board, w/o UltraSPARC IIIi, 
 | n/a | 
| X7445A-4 | 501-7463 | 1.593GHz CPU/Memory Module Assembly with 4GB Memory (4× 1GB DIMMs), L | n/a | 
|  | 1GB Registered ECC DDR1 DIMM (SPD 0.0 or 1.0) PC2100 & faster, L
 | n/a | 
|  | 1.593GHz CPU Board Assembly, L
 | n/a | 
|  | UltraSPARC IIIi Heatsink, 
 | n/a | 
|  | 0MB System Board, w/o UltraSPARC IIIi, 
 | n/a | 
| X7446A-4 | 501-7464 | 1.593GHz CPU/Memory Module Assembly with 8GB Memory (4× 2GB DIMMs), L | n/a | 
|  | 2GB Registered DDR DIMM (SPD 0.0 or 1.0) PC2100 & faster, L
 | n/a | 
|  | 1.593GHz CPU Board Assembly, L
 | n/a | 
|  | UltraSPARC IIIi Heatsink, 
 | n/a | 
|  | 0MB System Board, w/o UltraSPARC IIIi, 
 | n/a | 
| X7415A
 [S] | 501-6461 | 1.062GHz CPU/Memory Module Assembly with 2GB Memory
(4× 512MB DIMMs) | n/a | 
|  | 512MB Registered DDR DIMM (SPD 0.0)
 | n/a | 
|  | 1.062GHz CPU Board Assembly
 | n/a | 
|  |  | n/a | 
| X7416A
 [S] | 501-6533 | 1.28GHz CPU/Memory Module Assembly with 4GB Memory
(4× 1GB DIMMs) | n/a | 
|  | 1GB Registered DDR DIMM (SPD 0.0)
 | n/a | 
|  | 1.28GHz CPU Board Assembly
 | n/a | 
|  |  | n/a | 
| X7443A
 [S] | 501-7202 | 1.28GHz CPU/Memory Module Assembly with 8GB Memory
(4× 2GB DIMMs) | n/a | 
|  | 2GB Registered DDR DIMM (SPD 0.0 or 1.0) PC2100 & faster, L
 | n/a | 
|  | 1.28GHz CPU Board Assembly
 | n/a | 
|  |  | n/a | 
| X7444A 41
 [S] | 501-6789 | 1.593GHz CPU/Memory Module Assembly with 2GB Memory
(4× 512MB DIMMs) | n/a | 
|  | 512MB Registered DDR DIMM (SPD 0.0 or 1.0) PC2100 & faster
 | n/a | 
|  | 1.593GHz CPU Board Assembly
 | n/a | 
|  |  | n/a | 
| X7445A 42
 [S] | 501-6786 | 1.593GHz CPU/Memory Module Assembly with 4GB Memory
(4× 1GB DIMMs) | n/a | 
|  | 1GB Registered DDR DIMM (SPD 0.0 or 1.0) PC2100 & faster
 | n/a | 
|  | 1.593GHz CPU Board Assembly
 | n/a | 
|  |  | n/a | 
| X7446A
 [S] | 501-7093 | 1.593GHz CPU/Memory Module Assembly with 8GB Memory
(4× 2GB DIMMs) | n/a | 
|  | 2GB Registered DDR DIMM (SPD 0.0 or 1.0) PC2100 & faster, L
 | n/a | 
|  | 1.593GHz CPU Board Assembly
 | n/a | 
|  |  | n/a | 
| n/a | 330-3746 | CPU Filler Panel, | n/a | 
| n/a | 501-6370
 [F] | 1.28GHz CPU Board Assembly (<=501-6533-02)
 | n/a | 
|  |  | n/a | 
| n/a | 530-3146 | AC Input Power Cable | n/a | 
| n/a | 540-5418
 [F] | Motherboard Assembly
(August 2003) | n/a | 
|  |  | n/a | 
|  |  | n/a | 
|  |  | n/a | 
|  | CPU/Memory Board Cage Assembly
 | n/a | 
| n/a | 540-6336
 [F] | Motherboard Assembly
(September 2004) | n/a | 
|  |  | n/a | 
|  | Motherboard
(September 2004)
FAB 270-6344-07
 | n/a | 
|  |  | n/a | 
|  | CPU/Memory Board Cage Assembly
 | n/a | 
| n/a | 540-6682
 [F] | Motherboard Assembly, L | n/a | 
|  |  | n/a | 
|  | Motherboard w/o Tomatillo Heatsink, L
 | n/a | 
| n/a | 540-6276
 [N] | Motherboard Assembly
(May-July 2004) | n/a | 
|  |  | n/a | 
|  | Motherboard
(May-July 2004)
FAB 270-6344-06
 | n/a | 
|  |  | n/a | 
|  | CPU/Memory Board Cage Assembly
 | n/a |