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PartsTable / MEMORY / T9V40AA
T9V40AA ✓ Verified by PartsTable
Micron · 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

Boost the capabilities of your HP Workstation and improve system performance and application responsiveness with low-power, high-speed DDR4 memory from HP. 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→ T9V40AA
SPECIFICATIONS
Part NumberT9V40AA
ManufacturerMicron
COMPONENT DIAGRAM
ECC — 2Rx4 PC4 — RDIMM Micro 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 T9V40AA MFR Micron — —
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
805349-B21Compatible
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel v4 - G9
compatible
819411-001Compatible
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel v4 - G9
compatible
805349-K21Compatible
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel v4 - G9
compatible
805349-X21Compatible
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel v4 - G9
compatible
809082-091Compatible
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel v4 - G9
compatible
809082-09SCompatible
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel v4 - G9
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 17
L17370-001SUBSTITUTE
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel - WS
HP
T9V40ATSUBSTITUTE
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel - WS
HP
805349-B21SUBSTITUTE
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel - WS
HP
805349-K21SUBSTITUTE
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel - WS
HP
805349-X21SUBSTITUTE
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel - WS
HP
809082-091SUBSTITUTE
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel - WS
HP
809082-09SSUBSTITUTE
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel - WS
HP
809082-591SUBSTITUTE
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel - WS
HP
809082-EF1SUBSTITUTE
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel - WS
HP
819411-001SUBSTITUTE
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel - WS
HP
843313-B21SUBSTITUTE
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel - WS
HP
844949-001SUBSTITUTE
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel - WS
HP
852264-001SUBSTITUTE
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel - WS
HP
852280-001SUBSTITUTE
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel - WS
HP
854594-B21SUBSTITUTE
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel - WS
HP
855506-091SUBSTITUTE
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel - WS
HP
861109-001SUBSTITUTE
HP 16Gb PC4-2400T-R ECC REG SR x4 CAS-17 DIMM - Intel - WS
HP
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FREQUENTLY ASKED QUESTIONS
What is T9V40AA?
T9V40AA is a T9v40aa manufactured by Micron. It is classified as a MEMORY (RDIMM).
What parts can replace T9V40AA?
There are 12 known substitutes for T9V40AA: 805349-B21, 819411-001, 805349-K21 and 9 more. Substitute compatibility should be verified for your specific system.
Is T9V40AA still available?
T9V40AA is currently Unknown.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026