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Technical Data Sheet
03LD856 ✓ Verified by PartsTable
LENOVO · MEMORY · RDIMM
WHAT YOU NEED TO KNOW
Memory is a hot market right now. DDR5 and DDR4 are extremely volatile with data centers driving availability to extreme lows. Always validate machine type and model. Remember: all RAM is Hynix, Samsung, or Micron underneath OEM labels — use that to find alternatives. Key checks: Check OEM alternatives — all RAM is Hynix/Samsung/Micron underneath. Double-check what you're quoting in volatile market.
HOT market — DDR5/DDR4 extremely volatile
PRODUCT OVERVIEW

Lenovo 64GB TruDDR5 4800MHz (2Rx4) 10x4 RDIMM. Key specifications include ECC: Yes, Component for: Server, Internal memory: 64 GB, Memory clock speed: 4800 MHz, Memory form factor: 288-pin DIMM, Internal memory type: DDR5. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MEMORY RDIMM 03LD856
SPECIFICATIONS
ECCYes
Component forServer
Internal memory64 GB
Memory clock speed4800 MHz
Memory form factor288-pin DIMM
Internal memory typeDDR5
Memory layout (modules x size)1 x 64 GB
COMPONENT DIAGRAM
ECC 64GB 2Rx4 PC4 4800MHz RDIMM LENOV NOTCH ~133.35 mm DDR4 RDIMM | 64GB | 4800MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 03LD856 MFR LENOVO 64GB 4800MHz
KEY FEATURES
Up to 64 GB
DDR5 Interface
64GB Capacity
4800MHz Speed
TYPICAL APPLICATIONS
  • Server memory expansion for virtualization workloads
  • Database performance optimization (in-memory computing)
  • VDI and remote desktop session hosting
  • High-performance computing (HPC) clusters
  • Mail server and collaboration platform scaling
  • Application server tier expansion
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
03KL465Compatible
IBM 64Gb PC5-4800B-R ECC REG DR x4 EC8 10x4 DIMM for ThinkSystem - FRU
compatible
03LC498Compatible
IBM 64Gb PC5-4800B-R ECC REG DR x4 EC8 10x4 DIMM PBB for ThinkSystem - FRU
compatible
03LC499Compatible
IBM 64Gb PC5-4800B-R ECC REG DR x4 EC8 10x4 DIMM PBB for ThinkSystem - FRU
compatible
03LC500Compatible
IBM 64Gb PC5-4800B-R ECC REG DR x4 EC8 10x4 DIMM PBB for ThinkSystem - FRU
compatible
03LC532Compatible
IBM 64Gb PC5-4800B-R ECC REG DR x4 EC8 10x4 DIMM PBB for ThinkSystem - FRU
compatible
03LD857Compatible
IBM 64Gb PC5-4800B-R ECC REG DR x4 EC8 10x4 DIMM COO for ThinkSystem - FRU
compatible
LIFECYCLE
StatusUNKNOWN
Availability
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 9
SM37B34570SUBSTITUTE
IBM 64Gb PC5-4800B-R ECC REG DR x4 EC8 10x4 DIMM for ThinkSystem - FRU
LENOVO
03KL465SUBSTITUTE
IBM 64Gb PC5-4800B-R ECC REG DR x4 EC8 10x4 DIMM for ThinkSystem - FRU
LENOVO
03LC498SUBSTITUTE
IBM 64Gb PC5-4800B-R ECC REG DR x4 EC8 10x4 DIMM for ThinkSystem - FRU
LENOVO
03LC499SUBSTITUTE
IBM 64Gb PC5-4800B-R ECC REG DR x4 EC8 10x4 DIMM for ThinkSystem - FRU
LENOVO
03LC500SUBSTITUTE
IBM 64Gb PC5-4800B-R ECC REG DR x4 EC8 10x4 DIMM for ThinkSystem - FRU
LENOVO
03LC532SUBSTITUTE
IBM 64Gb PC5-4800B-R ECC REG DR x4 EC8 10x4 DIMM for ThinkSystem - FRU
LENOVO
03LD857SUBSTITUTE
IBM 64Gb PC5-4800B-R ECC REG DR x4 EC8 10x4 DIMM for ThinkSystem - FRU
LENOVO
4X77A77032SUBSTITUTE
IBM 64Gb PC5-4800B-R ECC REG DR x4 EC8 10x4 DIMM for ThinkSystem - FRU
LENOVO
4X77A81441SUBSTITUTE
IBM 64Gb PC5-4800B-R ECC REG DR x4 EC8 10x4 DIMM for ThinkSystem - FRU
LENOVO
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FREQUENTLY ASKED QUESTIONS
What is 03LD856?
03LD856 is a Lenovo 64GB TruDDR5 4800MHz (2Rx4) 10x4 RDIMM manufactured by LENOVO. It is classified as a MEMORY (RDIMM).
What parts can replace 03LD856?
There are 9 known substitutes for 03LD856: 03KL465, 03LC498, 03LC499 and 6 more. Substitute compatibility should be verified for your specific system.
Is 03LD856 still available?
03LD856 is currently Unknown.
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