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4X77A08635 ✓ 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

<b>High Performance Memory</b><br><br>Lenovo offers high-performance and high-capacity memory options in ThinkSystem servers.<br><br><b>Persistent Memory</b><br>Lenovo ThinkSystem servers configured with Intel Optane Persistent Memory transforms the memory/storage hierarchy enabling faster insights from data. This breakthrough technology delivers large capacity, high speed, affordable memory with data persistence and advanced encryption capabilities. These DDR4 compatible modules significantly increase the capacity of available system memory, keeping more hot data closer to the CPU, and enabling greater operational efficiency by processing larger data sets with more user instances.<br><br><b>3DS RDIMMs</b><br>To meet the ever increasing demand for higher density server memory modules, Lenovo offers 3DS (3 Dimensional Stacked) DDR4 RDIMMs which apply TSV (Through Silicon Via) technology from our partnership with a leading Tier 1 DRAM supplier.

The new TSV 3DS stack technology enables hi

WHERE IT FITS
MEMORY RDIMM 4X77A08635
SPECIFICATIONS
Component forPC/Server
Memory voltage1.2 V
Internal memory64 GB
Memory clock speed3200 MHz
Memory form factor288-pin DIMM
Internal memory typeDDR4
Harmonized System (HS) code84733020
Memory layout (modules x size)1 x 64 GB
COMPONENT DIAGRAM
ECC 64GB 2Rx4 PC4 3200MHz RDIMM LENOV NOTCH ~133.35 mm DDR4 RDIMM | 64GB | 3200MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 4X77A08635 MFR LENOVO 64GB 3200MHz
KEY FEATURES
Up to 64 GB
DDR4 Interface
64GB Capacity
3200MHz 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 3
02JK971Compatible
IBM 64Gb PC4-3200AA-R ECC REG DR x4 DIMM for ThinkSystem - FRU
compatible
03KH711Compatible
IBM 64Gb PC4-3200AA-R ECC REG DR x4 DIMM for ThinkSystem - FRU
compatible
SM37A68754Compatible
IBM 64Gb PC4-3200AA-R ECC REG DR x4 DIMM for ThinkSystem - P/N
compatible
LIFECYCLE
StatusUNKNOWN
Availability
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 3
SM37A68754SUBSTITUTE
IBM 64Gb PC4-3200AA-R ECC REG DR x4 DIMM for ThinkSystem - Option
LENOVO
02JK971SUBSTITUTE
IBM 64Gb PC4-3200AA-R ECC REG DR x4 DIMM for ThinkSystem - Option
LENOVO
03KH711SUBSTITUTE
IBM 64Gb PC4-3200AA-R ECC REG DR x4 DIMM for ThinkSystem - Option
LENOVO
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FREQUENTLY ASKED QUESTIONS
What is 4X77A08635?
4X77A08635 is a Lenovo 64GB TruDDR4 3200 MHz (2Rx4 1.2V) RDIMM manufactured by LENOVO. It is classified as a MEMORY (RDIMM).
What parts can replace 4X77A08635?
There are 3 known substitutes for 4X77A08635: 02JK971, 03KH711, SM37A68754. Substitute compatibility should be verified for your specific system.
Is 4X77A08635 still available?
4X77A08635 is currently Unknown.
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