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HP Workstation Z640 Memory Upgrades ✓­ Guaranteed Compatible

Make & ModelHP Workstation Z640
Total Memory Slots8
Maximum Memory256GB

It's easy to buy HP Workstation Z640 memory here.

Expert Technical
Support

Have a question about your HP Workstation Z640 memory upgrade? Our technical support can help you with any question to ensure you get the best module option for your HP Workstation Z640 system.

100% Guaranteed
Compatible

Get proven HP Workstation Z640 memory upgrades here. We ship approved, certified and OEM qualified modules to ensure total HP Workstation Z640 system memory reliability.

Quick Advance
Replacement

Nothing is perfect. Sometimes things happen. If your HP Workstation Z640 memory upgrade fails at anytime–we will ship a replacement same day. We support your HP Workstation Z640 memory purchase long after the sale.

Meet the increasing demands of your applications with more HP Workstation Z640 memory.
Expand system performance with an upgrade at lower costs today!

DIMM Type    Speed    Configuration Guide    Lifetime WarrantyLifetime WarrantyLifetime WarrantyLifetime Warranty
Never worry. We support you long after the sale. If any module ever fails–we will replace at zero cost to you!

DIMM TYPE
Memory Size
Memory Speed
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Made By

Showing 1–50 of 129 results

Part # Part Number Made By Capacity Speed Form Factor Price
805351-B21
805351‐B21
Memory for HP Workstation Z640
Original Replacement 1x 32GB DDR4-2400 RDIMM $ 42 Buy Now
809083-091
809083‐091
Memory for HP Workstation Z640
Original Replacement 1x 32GB DDR4-2400 RDIMM $ 42 Buy Now
819412-001
819412‐001
Memory for HP Workstation Z640
Original Replacement 1x 32GB DDR4-2400 RDIMM $ 42 Buy Now
843315-B21
843315‐B21
Memory for HP Workstation Z640
Original Replacement 1x 32GB DDR4-2400 RDIMM $ 42 Buy Now
851007-B21
851007‐B21
Memory for HP Workstation Z640
Original Replacement 1x 32GB DDR4-2400 RDIMM $ 42 Buy Now
852265-001
852265‐001
Memory for HP Workstation Z640
Original Replacement 1x 32GB DDR4-2400 RDIMM $ 42 Buy Now
854596-B21
854596‐B21
Memory for HP Workstation Z640
Original Replacement 1x 32GB DDR4-2400 RDIMM $ 42 Buy Now
875351-B21
875351‐B21
Memory for HP Workstation Z640
Original Replacement 1x 32GB DDR4-2400 RDIMM $ 42 Buy Now
Q1V92A
Q1V92A
Memory for HP Workstation Z640
Original Replacement 1x 32GB DDR4-2400 RDIMM $ 42 Buy Now
T9V41AA
T9V41AA
Memory for HP Workstation Z640
Original Replacement 1x 32GB DDR4-2400 RDIMM $ 42 Buy Now
805349-B21
805349‐B21
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2400 RDIMM $ 28 Buy Now
809081-081
809081‐081
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2400 RDIMM $ 28 Buy Now
809082-091
809082‐091
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2400 RDIMM $ 28 Buy Now
819411-001
819411‐001
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2400 RDIMM $ 28 Buy Now
836220-B21
836220‐B21
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2400 RDIMM $ 28 Buy Now
840756-C9S
840756‐C9S
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2400 RDIMM $ 28 Buy Now
846740-001
846740‐001
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2400 RDIMM $ 28 Buy Now
851005-B21
851005‐B21
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2400 RDIMM $ 28 Buy Now
852264-001
852264‐001
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2400 RDIMM $ 28 Buy Now
854594-B21
854594‐B21
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2400 RDIMM $ 28 Buy Now
882344-B21
882344‐B21
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2400 RDIMM $ 28 Buy Now
P02972-001
P02972‐001
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2400 RDIMM $ 28 Buy Now
Q1V91A
Q1V91A
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2400 RDIMM $ 28 Buy Now
T9V40AA
T9V40AA
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2400 RDIMM $ 28 Buy Now
805347-B21
805347‐B21
Memory for HP Workstation Z640
Original Replacement 1x 8GB DDR4-2400 RDIMM $ 24 Buy Now
843311-B21
843311‐B21
Memory for HP Workstation Z640
Original Replacement 1x 8GB DDR4-2400 RDIMM $ 24 Buy Now
852261-001
852261‐001
Memory for HP Workstation Z640
Original Replacement 1x 8GB DDR4-2400 RDIMM $ 24 Buy Now
854592-B21
854592‐B21
Memory for HP Workstation Z640
Original Replacement 1x 8GB DDR4-2400 RDIMM $ 24 Buy Now
T9V39AA
T9V39AA
Memory for HP Workstation Z640
Original Replacement 1x 8GB DDR4-2400 RDIMM $ 24 Buy Now
805353-B21
805353‐B21
Memory for HP Workstation Z640
Original Replacement 1x 32GB DDR4-2400 LRDIMM $ 48 Buy Now
809084-091
809084‐091
Memory for HP Workstation Z640
Original Replacement 1x 32GB DDR4-2400 LRDIMM $ 48 Buy Now
819414-001
819414‐001
Memory for HP Workstation Z640
Original Replacement 1x 32GB DDR4-2400 LRDIMM $ 48 Buy Now
726719-B21
726719‐B21
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2133 RDIMM $ 24 Buy Now
752369-081
752369‐081
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2133 RDIMM $ 24 Buy Now
752369-581
752369‐581
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2133 RDIMM $ 24 Buy Now
752369-EF1
752369‐EF1
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2133 RDIMM $ 24 Buy Now
774172-001
774172‐001
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2133 RDIMM $ 24 Buy Now
778268-B21
778268‐B21
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2133 RDIMM $ 24 Buy Now
780673-081
780673‐081
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2133 RDIMM $ 24 Buy Now
784672-001
784672‐001
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2133 RDIMM $ 24 Buy Now
807818-B21
807818‐B21
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2133 RDIMM $ 24 Buy Now
810744-B21
810744‐B21
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2133 RDIMM $ 24 Buy Now
812221-001
812221‐001
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2133 RDIMM $ 24 Buy Now
J9P83AA
J9P83AA
Memory for HP Workstation Z640
Original Replacement 1x 16GB DDR4-2133 RDIMM $ 24 Buy Now
726718-B21
726718‐B21
Memory for HP Workstation Z640
Original Replacement 1x 8GB DDR4-2133 RDIMM $ 28 Buy Now
752368-081
752368‐081
Memory for HP Workstation Z640
Original Replacement 1x 8GB DDR4-2133 RDIMM $ 28 Buy Now
759934-B21
759934‐B21
Memory for HP Workstation Z640
Original Replacement 1x 8GB DDR4-2133 RDIMM $ 20 Buy Now
762200-081
762200‐081
Memory for HP Workstation Z640
Original Replacement 1x 8GB DDR4-2133 RDIMM $ 20 Buy Now
774170-001
774170‐001
Memory for HP Workstation Z640
Original Replacement 1x 8GB DDR4-2133 RDIMM $ 28 Buy Now
774171-001
774171‐001
Memory for HP Workstation Z640
Original Replacement 1x 8GB DDR4-2133 RDIMM $ 20 Buy Now

Learn more about HP Workstation Z640 memory

What HP Workstation Z640 DIMM type is supported?

LRDIMM and RDIMM

Why are there various DIMM types supported?

Factory configured Z640 systems often have smaller, less expensive modules. As more memory is required different density and technologies are needed. DIMM type mixing is never recommended.

What is a registered memory module?

Registered DIMM memory modules have a register component between the DRAM modules and the motherboard memory controller. When manufactured as a dual in-line memory module (DIMM), a registered memory module is called an RDIMM.

What is a load reduced memory module?

Load reduced memory module technology uses a distributed data buffer to improve bandwidth efficiencies when scaling to higher capacities and speed on enterprise server systems. All LRDIMMs are registered but not all RDIMMs are LRDIMMs. LRDIMM or load-reduced DIMMs are (used in enterprise servers) support highest density modules and contain a memory buffer (MB) component usually made by IDT or Montage. The memory buffer minimizes the load on the server memory bus. LRDIMMs are commonly used to maximize HP Workstation Z640.

What HP Workstation Z640 memory speed is supported?

DDR4-2133 and DDR4-2400

Why may there be various speeds of HP Workstation Z640 memory?

Some servers often have various configurations and versions. If you are unsure what you need, please refer to your Z640 manual or data sheet. If you need tech support, please contact us.

General DIMM population guideline for HP Workstation Z640 upgrade to consider.

Some may or may not apply.

  • Do not mix DIMM LRDIMM and RDIMM types.
  • If mixing memory speeds, all 8 DIMMs run at the lowest DDR4-2133 bus frequency.
  • Install DIMMs starting furthest from the processor.
  • Do not install DIMMs if the corresponding processor is not installed.
  • If only one processor is installed in a two CPU system, only half of the DIMM slots are available.
  • To maximize performance, balance the total memory capacity between all installed processors.
  • It is not required, but it is recommended to load the channels similarly if possible.

Why are there so many HP Workstation Z640 upgrade options?

IT buyers come from all walks of life. Some purchase by OEM part number. Some purchase by original module part number. Our goal is to give you confidence when purchasing HP Workstation Z640 upgrades. All modules listed are qualified to work in your HP Workstation Z640.


 

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