PartsTable
Technical Data Sheet
Download PDF

4X77A08633 — Memory Specs & Substitutes

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: Double-check what you're quoting in volatile market.
HOT market — DDR5/DDR4 extremely volatile
PRODUCT OVERVIEW

Memory reliability, performance and quality are even more critical today as customers utilize greater memory capacities for Big Data Analytics, Cloud Computing, Virtualization, Database and High Performance Computing workloads. Lenovo offers TruDDR4 Memory portfolio for ThinkSystem servers which help dramatically improve workload performance. 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→ 4X77A08633
SPECIFICATIONS
Component forPC/Server
Memory voltage1.2 V
Internal memory32 GB
Memory clock speed3200 MHz
Memory form factor288-pin DIMM
Internal memory typeDDR4
Memory layout (modules x size)1 x 32 GB
BROWSE LENOVO MACHINES
ThinkSystem SR650 V1 ThinkSystem SR650 V2 ThinkSystem SR630 V1 ThinkSystem SR630 V2 System x3650 M5 System x3550 M5 ThinkServer RD550 System x IBM System x3650 M4 ThinkServer RD650 SD530 System x3500 M4 ThinkServer RD350
All Lenovo machines and parts
COMPONENT DIAGRAM
ECC 32GB 2Rx4 PC4 3200MHz RDIMM LENOV NOTCH ~133.35 mm DDR4 RDIMM | 32GB | 3200MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 4X77A08633 MFR LENOVO 32GB 3200MHz
KEY FEATURES
•
Up to 32 GB
•
DDR4 Interface
•
32GB 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
SUBSTITUTES & CROSS-REFERENCES 2
02JK237SubstituteBROKER-VERIFIED
Lenovo 32GB TruDDR4 3200 MHz (2Rx4 1.2V) RDIMM
substitute
SM37A68752CompatiblePARTNER
IBM 32Gb PC4-3200AA-R ECC REG DR x4 DIMM for ThinkSystem - P/N
compatible
LIFECYCLE

No lifecycle data available.

THIS PART SUBSTITUTES FOR 2
SM37A68752SUBSTITUTE
IBM 32Gb PC4-3200AA-R ECC REG DR x4 DIMM for ThinkSystem - Option
LENOVO
02JK237SUBSTITUTE
IBM 32Gb PC4-3200AA-R ECC REG DR x4 DIMM for ThinkSystem - Option
LENOVO
Ready to buy 4X77A08633?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 4X77A08633?
4X77A08633 is a Lenovo 32GB TruDDR4 3200 MHz (2Rx4 1.2V) RDIMM manufactured by LENOVO. It is classified as a MEMORY (RDIMM).
What parts can replace 4X77A08633?
There are 2 known substitutes for 4X77A08633: 02JK237, SM37A68752. Substitute compatibility should be verified for your specific system.
Is 4X77A08633 still available?
4X77A08633 is currently Unknown.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 4X77A08633

✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.