Replacement for CTD421UX32: Drop-In Alternatives We Stock
Looking for a replacement for the CTD421UX32 (CTD421UX32 - Crucial 32GB Kit (4 X 8GB) DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 288-Pin DIMM 1.2V Dual Rank Memory)? Pro Disk Network ships Crucial 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 CTD421UX32
| SKU | CTD421UX32 |
|---|---|
| Product | CTD421UX32 - Crucial 32GB Kit (4 X 8GB) DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 288-Pin DIMM 1.2V Dual Rank Memory |
| Current price | $493.89 |
| Stock status | In Stock |
| Detail page | View CTD421UX32 › |
Drop-in replacements for CTD421UX32
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.
CT4K8G4DFS8213 - Crucial Technology 32GB Kit (4 X 8GB) DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 288-Pin DIMM 1.2V Single Rank Memory
SKU: CT4K8G4DFS8213
Price: $160.55
CT4K8G4RFS4213 - Crucial Technology 32GB Kit (4 X 8GB) DDR4-2133MHz PC4-17000 ECC Registered CL15 288-Pin DIMM 1.2V Single Rank Memory
SKU: CT4K8G4RFS4213
Price: $317.86
CT4K8G4RFD8213 - Crucial Technology 32GB Kit (4 X 8GB) DDR4-2133MHz PC4-17000 ECC Registered CL15 288-Pin DIMM 1.2V Dual Rank Memory
SKU: CT4K8G4RFD8213
Price: $359.33
CT10373604 - Crucial 32GB Kit (4 X 8GB) DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 288-Pin DIMM 1.2V Dual Rank Memory
SKU: CT10373604
Price: $493.89
CT10096781 - Crucial 32GB Kit (4 X 8GB) DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 288-Pin DIMM 1.2V Dual Rank Memory
SKU: CT10096781
Price: $493.89
CT10074805 - Crucial 32GB Kit (4 X 8GB) DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 288-Pin DIMM 1.2V Dual Rank Memory
SKU: CT10074805
Price: $493.89
CT10011345 - Crucial 32GB Kit (4 X 8GB) DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 288-Pin DIMM 1.2V Dual Rank Memory
SKU: CT10011345
Price: $493.89
CT10004011 - Crucial 32GB Kit (4 X 8GB) DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 288-Pin DIMM 1.2V Dual Rank Memory
SKU: CT10004011
Price: $493.89
CT10003212 - Crucial 32GB Kit (4 X 8GB) DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 288-Pin DIMM 1.2V Dual Rank Memory
SKU: CT10003212
Price: $493.89
CT4K8G4DFD8213 - Crucial Technology 32GB Kit (4 X 8GB) DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 288-Pin DIMM 1.2V Dual Rank Memory
SKU: CT4K8G4DFD8213
Price: $493.89
CT4C8G4DFD8213 - Crucial 32GB Kit (4 X 8GB) DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 288-Pin DIMM 1.2V Dual Rank Memory
SKU: CT4C8G4DFD8213
Price: $493.89
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.