Replacement for 6478991: Drop-In Alternatives We Stock
Looking for a replacement for the 6478991 (6478991 - HP 8GB PC3-12800 DDR3-1600MHz ECC Registered CL11 RDIMM Single-Rank Memory Module)? Pro Disk Network ships HP 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 6478991
| SKU | 6478991 |
|---|---|
| Product | 6478991 - HP 8GB PC3-12800 DDR3-1600MHz ECC Registered CL11 RDIMM Single-Rank Memory Module |
| Current price | $94.53 |
| Stock status | In Stock |
| Detail page | View 6478991 › |
Drop-in replacements for 6478991
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.
HP647651-081-KEF - Kingston 8GB PC3-12800 DDR3-1600MHz ECC Registered CL11 RDIMM Single-Rank Memory Module
SKU: HP647651-081-KEF
Price: $85.79
HP647651-081-HYA - Kingston 8GB PC3-12800 DDR3-1600MHz ECC Registered CL11 RDIMM Single-Rank Memory Module
SKU: HP647651-081-HYA
Price: $85.79
664691-001B - HP 8GB PC3-12800 DDR3-1600MHz ECC Registered CL11 RDIMM Single-Rank Memory Module
SKU: 664691-001B
Price: $94.53
647899B21ABA - HP 8GB PC3-12800 DDR3-1600MHz ECC Registered CL11 RDIMM Single-Rank Memory Module
SKU: 647899B21ABA
Price: $94.53
676333S21 - HP 8GB PC3-12800 DDR3-1600MHz ECC Registered CL11 RDIMM Single-Rank Memory Module
SKU: 676333S21
Price: $94.53
759902-B21 - HP 8GB PC3-12800 DDR3-1600MHz ECC Registered CL11 RDIMM Single-Rank Memory Module
SKU: 759902-B21
Price: $94.53
RP001230801 - HP 8GB PC3-12800 DDR3-1600MHz ECC Registered CL11 RDIMM Single-Rank Memory Module
SKU: RP001230801
Price: $94.53
HP 647899R-B21#0D1 8GB PC3-12800 DDR3-1600MHz ECC Registered CL11 RDIMM Single-Rank Memory Module
SKU: 647899R-B21-0D1
Price: $94.53
676333R-B21 - HP 8GB PC3-12800 DDR3-1600MHz ECC Registered CL11 RDIMM Single-Rank Memory Module
SKU: 676333R-B21
Price: $94.53
HP 647899-B21#0D1 8GB PC3-12800 DDR3-1600MHz ECC Registered CL11 RDIMM Single-Rank Memory Module
SKU: 647899-B21-0D1
Price: $94.53
664691-001S - HP 8GB PC3-12800 DDR3-1600MHz ECC Registered CL11 RDIMM Single-Rank Memory Module
SKU: 664691-001S
Price: $94.53
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.