PartsTable
Intelligence Platform
Buy on eBay
PartsTable / MEMORY / 46C7421
46C7421 ✓ 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

IBM 46C7421 IBM 46C7421 IBM 1GB SR PC2-5300 CL5 | half kit of 46C7418 | x The IBM 46C7421, a reliable 1GB SR PC2-5300 CL5 memory module designed to enhance your server's performance. This half kit of the 46C7418 provides efficient memory solutions, ensuring your system runs smoothly and efficiently. Perfect for businesses looking to upgrade their IBM servers, this module is fully tested and ready for immediate shipping, embodying quality and reliability.

With a standard 90-day warranty and optional extended maintenance plans, you can invest with confidence. Plus, take advantage of bulk discounts by reaching out for a custom quote. Our dedicated IBM product team, led by Mike Kozicky, features over 1.3 million systems and parts in stock, making it easy for you to find exactly what you need.

Don't forget, we also offer cash or trade-ins for your excess IBM servers, helping you maximize your technology investment. Get the IBM 46C7421 today and experience a seamless upgrade! IBM 46C7421 Tec. 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→ 46C7421
SPECIFICATIONS
Part Number46C7421
ManufacturerIBM
Capacity1GB
COMPONENT DIAGRAM
ECC 1GB 2Rx4 PC4 — RDIMM IBM NOTCH ~133.35 mm DDR4 RDIMM | 1GB | — | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 46C7421 MFR IBM 1GB —
KEY FEATURES
•
1GB Capacity
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 2
46C7418Compatible
IBM 2Gb PC2-5300F 667Mhz ECC FBD SR x8 CL5 LV (2x1Gb) Memory Kit for M1/M2/HS21 - Option
compatible
43X5059Compatible
IBM 1GB Pc2-5300f 667MHZ ECC Fbd Sr X8 Cl5 Lv Dimm - P/n
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 2
43X5059SUBSTITUTE
IBM 1Gb PC2-5300F 667Mhz ECC FBD SR x8 CL5 LV DIMM - FRU
IBM
46C7418SUBSTITUTE
IBM 1Gb PC2-5300F 667Mhz ECC FBD SR x8 CL5 LV DIMM - FRU
IBM
Ready to buy 46C7421?
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 46C7421?
46C7421 is a IBM 46C7421 IBM 46C7421 IBM 1GB SR PC2-5300 CL5 | half kit of 46C7418 | x The IBM 46C7421, a reliable 1GB SR PC2-5300 CL5 memory module designed to enhance your server's performance. This half kit of the 46C7418 provides efficient memory solutions, ensuring your system runs smoothly and efficiently. Perfect for businesses looking to upgrade their IBM servers, this module is fully tested and ready for immediate shipping, embodying quality and reliability. With a standard 90-day warranty and optional extended maintenance plans, you can invest with confidence. Plus, take advantage of bulk discounts by reaching out for a custom quote. Our dedicated IBM product team, led by Mike Kozicky, features over 1.3 million systems and parts in stock, making it easy for you to find exactly what you need. Don't forget, we also offer cash or trade-ins for your excess IBM servers, helping you maximize your technology investment. Get the IBM 46C7421 today and experience a seamless upgrade! IBM 46C7421 Tec manufactured by IBM. It is classified as a MEMORY (RDIMM).
What parts can replace 46C7421?
There are 2 known substitutes for 46C7421: 46C7418, 43X5059. Substitute compatibility should be verified for your specific system.
Is 46C7421 still available?
46C7421 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 46C7421?

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