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×InformationNeed Windows 11 help?Check documents on compatibility, FAQs, upgrade information and available fixes.
Windows 11 Support Center. -
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×InformationNeed Windows 11 help?Check documents on compatibility, FAQs, upgrade information and available fixes.
Windows 11 Support Center. -
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hi
try this
How to Check Maximum RAM Supported on Your PC - Easytutorial
https://support.hp.com/us-en/product/hp-z420-workstation/5225033/document/c03277050
Maximum memory | Supports up to 64GB |
HP Z220 SFF, Z220 CMT, Z420, Z620, and Z820 Workstations Maintenance and Service Guide
Dual in-line memory modules (DIMMs) based on DDR3 1600 MHz technology
● Error checking and correcting (ECC)-protected
● Four direct-attach memory channels enable low-latency access and fast data
transfer for improved performance
● Up to 64 GB system memory (8 GB DIMMs)
● 1600 MHz 2, 4, 8 GB ECC unbuffered DIMMs
NOTE: Do not mix any of the different types (unbuffered, registered, and load reducing
DIMMs) of memory. The system will not boot and will produce a memory error.
NOTE: Distribute DIMMs across all memory channels for optimal performance
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