PartsTable
Technical Data Sheet
CM327B ✓ Verified by PartsTable
· 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 IBM 64 GB DDR4 DDIMM is a the manufacturer memory module engineered for enterprise server and workstation platforms requiring validated, high-reliability memory. Key specifications include base_style: MIDGET FLANGED, bulb_style: T (TUBULAR), overall_length: 0.625 INCHES MAXIMUM IN, voltage_rating: 28.000 VOLTS NOMINAL, wattage_rating: 1.120 WATTS, bulb_designator: T-1 3/4. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6240-00-304-2534, indicating validated use in U.S. government and defense logistics supply chains. 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 CM327B
NSN: 6240-00-304-2534
FSC: 6240
CAGE: 71744 — CHICAGO MINIATURE LIGHTING LLC DBA CHICAGO MINIATURE OPTOELECTRON (USA)
SPECIFICATIONS
base_styleMIDGET FLANGED
bulb_styleT (TUBULAR)
overall_length0.625 INCHES MAXIMUM IN
voltage_rating28.000 VOLTS NOMINAL
wattage_rating1.120 WATTS
bulb_designatorT-1 3/4
rated_average_lifeHOURS
light_output_rating0.340 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING
filament_designationC-2F
average_life_rating_in_hours7000.0
emitted_light_characteristicBLUE
current_rating_for_which_designed0.040 AMPERES NOMINAL
NSN6240-00-304-2534
COMPONENT DIAGRAM
ECC 64GB 2Rx4 PC4 RDIMM OEM NOTCH ~133.35 mm DDR4 RDIMM | 64GB | — | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN CM327B MFR OEM 64GB —
KEY FEATURES
DDR4 Interface
64GB Capacity
DDR4 Memory
LIGHT OUTPUT RATING: 0.340 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING
BULB DESIGNATOR: T-1 3/4
VOLTAGE RATING: 28.000 VOLTS NOMINAL
WATTAGE RATING: 1.120 WATTS
BASE STYLE: MIDGET FLANGED
BULB STYLE: T (TUBULAR)
AVERAGE LIFE RATING IN HOURS: 7000.0
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
TECHNICAL CHARACTERISTICS (FLIS)
LIGHT OUTPUT RATING0.340 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING
BULB DESIGNATORT-1 3/4
VOLTAGE RATING28.000 VOLTS NOMINAL
WATTAGE RATING1.120 WATTS
BASE STYLEMIDGET FLANGED
BULB STYLET (TUBULAR)
AVERAGE LIFE RATING IN HOURS7000.0
RATED AVERAGE LIFEHOURS
BULB LIGHT TRANSMISSION CHARACTERISTICTRANSPARENT
EMITTED LIGHT CHARACTERISTICBLUE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
116829PC343Interchangeable
interchangeable cross-reference
interchangeable
118829PC343Interchangeable
interchangeable cross-reference
interchangeable
116916PC343Interchangeable
interchangeable cross-reference
interchangeable
327BInterchangeable
IBM 64 GB DDR4 Ddimm
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy CM327B?
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 CM327B?
CM327B is a IBM 64 GB DDR4 DDIMM. It is classified as a MEMORY (RDIMM).
What parts can replace CM327B?
There are 4 known substitutes for CM327B: 116829PC343, 118829PC343, 116916PC343 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for CM327B?
CM327B is cataloged in the Federal Logistics Information System (FLIS) under NSN 6240-00-304-2534. This indicates validated use in U.S. government and defense supply chains.
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.

Request a Quote — CM327B