Replacement for 4520-8203: Drop-In Alternatives We Stock
Looking for a replacement for the 4520-8203 (4520-8203 - IBM 1GB Kit (2 X 512MB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM Single Rank Memory)? Pro Disk Network ships IBM 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 4520-8203
| SKU | 4520-8203 |
|---|---|
| Product | 4520-8203 - IBM 1GB Kit (2 X 512MB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM Single Rank Memory |
| Current price | $188.36 |
| Stock status | In Stock |
| Detail page | View 4520-8203 › |
Drop-in replacements for 4520-8203
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.
4521-8203 - IBM 2GB Kit (2 X 1GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM Dual Rank Memory
SKU: 4521-8203
Price: $285.75
8203-4532 - IBM 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM Dual Rank Memory
SKU: 8203-4532
Price: $175.88
4532-8203 - IBM 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM Single Rank Memory
SKU: 4532-8203
Price: $207.08
8203-4523 - IBM 8GB Kit (2 X 4GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM Single Rank Memory
SKU: 8203-4523
Price: $301.84
4526-8203 - IBM 8GB Kit (2 X 4GB) DDR3-1066MHz PC3-8500 ECC Registered CL7 240-Pin DIMM Quad Rank Memory
SKU: 4526-8203
Price: $185.83
8203-4529 - IBM 16GB Kit (2 X 8GB) DDR3-1066MHz PC3-8500 ECC Registered CL7 240-Pin DIMM Dual Rank Memory
SKU: 8203-4529
Price: $297.29
40L2831 - IBM 1GB Kit (2 X 512MB) DDR2-667MHz PC2-5300 ECC Unbuffered CL5 240-Pin DIMM Single Rank Memory
SKU: 40L2831
Price: $169.14
40T7981 - IBM 1GB Kit (2 X 512MB) DDR2-667MHz PC2-5300 ECC Unbuffered CL5 240-Pin DIMM Single Rank Memory
SKU: 40T7981
Price: $169.14
39Y3685 - IBM 1GB Kit (2 X 512MB) DDR2-667MHz PC2-5300 non-ECC Unbuffered CL5 240-Pin DIMM Memory
SKU: 39Y3685
Price: $188.36
40U8124 - IBM 1GB Kit (2 X 512MB) DDR2-667MHz PC2-5300 non-ECC Unbuffered CL5 240-Pin DIMM Single Rank Memory
SKU: 40U8124
Price: $188.36
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.