Replacement for 540-7559-01: Drop-In Alternatives We Stock
Looking for a replacement for the 540-7559-01 (540-7559-01 - Sun 8GB Kit (2 X 4GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Quad Rank Memory)? Pro Disk Network ships drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the 540-7559-01
| SKU | 540-7559-01 |
|---|---|
| Product | 540-7559-01 - Sun 8GB Kit (2 X 4GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Quad Rank Memory |
| Current price | $237.80 |
| Stock status | In Stock |
| Detail page | View 540-7559-01 › |
Drop-in replacements for 540-7559-01
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
540-7670-01 - Sun 8GB Kit (2 X 4GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM Single Rank Memory
SKU: 540-7670-01
Price: $165.76
540-7701 - Sun 8GB Kit (2 X 4GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Quad Rank Memory
SKU: 540-7701
Price: $237.80
540-7348-01 - Sun 8GB Kit (2 X 4GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Quad Rank Memory
SKU: 540-7348-01
Price: $237.80
540-7852-01 - Sun 16GB Kit (2 X 8GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM 1.55V Low Voltage Memory for Blade X6450 Server
SKU: 540-7852-01
Price: $286.47
540-6429-01 - Sun 4GB Kit (2 X 2GB) DDR-400MHz PC3200 ECC Registered CL3 184-Pin DIMM Memory for Sun V20z V40z
SKU: 540-6429-01
Price: $202.55
540-6837-01 - Sun 4GB Kit (2 X 2GB) DDR-400MHz PC3200 ECC Registered CL3 184-Pin DIMM Single Rank Memory for Sun V20z V40z
SKU: 540-6837-01
Price: $202.55
540-7800-01 - Sun 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM Dual Rank Memory
SKU: 540-7800-01
Price: $216.46
540-7347-01 - Sun 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Dual Rank Memory
SKU: 540-7347-01
Price: $228.71
540-7252-01 - Sun 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Dual Rank Memory for Blade X6250 Server
SKU: 540-7252-01
Price: $228.71
540-7829-01 - Sun 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM Single Rank Memory
SKU: 540-7829-01
Price: $254.86
540-6838-01 - Sun 8GB Kit (2 X 4GB) DDR-400MHz PC3200 ECC Registered CL3 184-Pin DIMM Memory
SKU: 540-6838-01
Price: $880.12
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.