Replacement for 254873-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 254873-B21 (254873-B21 - Compaq 512MB 133MHz PC133 ECC Unbuffered CL3 168-Pin DIMM Memory Module)? 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 254873-B21
| SKU | 254873-B21 |
|---|---|
| Product | 254873-B21 - Compaq 512MB 133MHz PC133 ECC Unbuffered CL3 168-Pin DIMM Memory Module |
| Current price | $226.08 |
| Stock status | In Stock |
| Detail page | View 254873-B21 › |
Drop-in replacements for 254873-B21
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.
250052-001 - HP / Compaq 512MB 133MHz PC133 ECC Unbuffered CL3 168-Pin DIMM Memory Module
SKU: 250052-001
Price: $211.00
254317-001 - Compaq 512MB 133MHz PC133 non-ECC Unbuffered CL3 168-Pin DIMM Memory Module for EVO W4000 Workstation
SKU: 254317-001
Price: $226.08
254283-001 - Compaq 512MB 133MHz PC133 non-ECC Unbuffered CL3 168-Pin DIMM Memory Module
SKU: 254283-001
Price: $259.50
232628-001 - Compaq 512MB 133MHz PC133 non-ECC Unbuffered CL3 168-Pin DIMM Memory Module
SKU: 232628-001
Price: $282.20
CT32M64S4D75.16T - Crucial 256MB SDRAM- 133MHz PC133 133MHz non-ECC Unbuffered CL3 168-Pin DIMM Memory Module
SKU: CT32M64S4D75.16T
Price: $205.26
128279-B21 - Compaq 512MB 133MHz PC-133 ECC Registered CL3 168-Pin DIMM Memory Module
SKU: 128279-B21
Price: $71.58
0V003400XH2 - Compaq 512MB 133MHz PC133 ECC Registered CL3 168-Pin DIMM Memory Module
SKU: 0V003400XH2
Price: $564.83
HYS72V64300GR-7.5 - Infineon 512MB 133MHz PC133 ECC Registered CL3 168-Pin DIMM Memory Module for Compaq ProLiant DL320
SKU: HYS72V64300GR-7.5
Price: $564.83
140133-001 - HP / Compaq 128MB SDRAM-133MHz PC133 non-ECC Unbuffered CL3 168-Pin DIMM Memory Module
SKU: 140133-001
Price: $71.58
9905121-002 - Compaq 256MB 133MHz PC133 ECC Unbuffered 168-Pin DIMM Memory Module for Deskpro En / Ep
SKU: 9905121-002
Price: $83.88
254872-B21 - Compaq 256MB 133MHz PC133 ECC Unbuffered CL3 168-Pin DIMM Memory Module
SKU: 254872-B21
Price: $96.20
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.