|  | 
| Memory |  
| Option # | Manufacturing Part #
 | Description | Previous Part #
 |  
| X6739A
 [S] | 375-0086
 [C]
 [S] | 64MB PCI Fast Write Cache | n/a |  
| X7005A 5
 [S] | 501-6005
 [C] | 256 MB DIMM | n/a |  
| X7043A 6
 [S] | 501-5691
 [C] | 64MB DIMM | n/a |  
| n/a | 501-5218
 [C] | Ultra 80 Memory Riser Board | n/a |  
| n/a | 501-6056
 [C] | 256MB DIMM w/ GAL | n/a |  
| 5 512 MB (2 × 256MB DIMMS) with GAL (Gate Array Logic) 6 128MB (2 × 64MB DIMM), 5V
 
 |  
| 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
 |  |