PartsTable
Intelligence Platform
Buy on eBay
PartsTable / MEMORY / 46W0821
46W0821 ✓ Verified by PartsTable
IBM · 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

The 46W0821 is a IBM industrial component. 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→ 46W0821
SPECIFICATIONS
Part Number46W0821
ManufacturerIBM
COMPONENT DIAGRAM
ECC — 2Rx4 PC4 — RDIMM IBM NOTCH ~133.35 mm DDR4 RDIMM | — | — | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 46W0821 MFR IBM — —
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
00NV202Compatible
IBM 8GB PC4-2400T-R ECC Reg Sr X4 Cas-17 Dimm - P/n
compatible
46W0820Compatible
IBM 8Gb PC4-2400T-R ECC REG SR x4 CAS-17 (1x8Gb) Memory Kit for M5 / x3850/x3950 X6 - SBB
compatible
46W0823Compatible
IBM 8GB PC4-2400T-R ECC Reg Sr X4 Cas-17 Dimm - Fru
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 3
00NV202SUBSTITUTE
IBM 8Gb PC4-2400T-R ECC REG SR x4 CAS-17 (1x8Gb) Memory Kit for M5 / x3850/x3950 X6 - Option
IBM
46W0820SUBSTITUTE
IBM 8Gb PC4-2400T-R ECC REG SR x4 CAS-17 (1x8Gb) Memory Kit for M5 / x3850/x3950 X6 - Option
IBM
46W0823SUBSTITUTE
IBM 8Gb PC4-2400T-R ECC REG SR x4 CAS-17 (1x8Gb) Memory Kit for M5 / x3850/x3950 X6 - Option
IBM
Ready to buy 46W0821?
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 46W0821?
46W0821 is a 46W0821 manufactured by IBM. It is classified as a MEMORY (RDIMM).
What parts can replace 46W0821?
There are 3 known substitutes for 46W0821: 00NV202, 46W0820, 46W0823. Substitute compatibility should be verified for your specific system.
Is 46W0821 still available?
46W0821 is currently Unknown.
Community Feedback
Comments (0)
Loading comments...
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Need a quote for 46W0821?

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
Last verified: July 2026