HPE 669322-B21 4GB DDR3-1600 Memory Kit

HPE 669322-B21 4GB DDR3-1600 Unbuffered ECC Memory Kit

The HPE 669322-B21 is a 4GB unbuffered ECC memory kit for entry-level HPE ProLiant Gen8 servers. It contains one dual rank x8 DIMM rated PC3-12800E, which means DDR3-1600 operation with CAS latency 11 at the standard DDR3 voltage of 1.5V.

Small offices, branch sites and home labs often run compact Gen8 machines such as the ProLiant MicroServer Gen8. Those systems take unbuffered ECC memory rather than the registered modules used in larger rack servers, and this kit is one of the HPE options built for them.

Buyers can choose a New or a Refurbished 669322-B21 from Euroland IT Store, with each grade offered while stock lasts.

HPE 669322-B21 Technical Specifications

What Is The HPE 669322-B21?

669322-B21 is the HPE option kit number, which is the code used when the module is sold as an upgrade. HPE also assigns it a spare part number, 684034-001, and an assembly number, 669238-071, which is often the code printed on the DIMM label. Any of the three can be used to identify the same 4GB module.

Getting the number right is important with Gen8 entry servers. These systems reject registered DIMMs, and some models only support particular speeds or voltages. A module that looks right on paper but is the wrong buffering type simply will not post.

Unbuffered ECC Versus Registered Memory

An unbuffered DIMM connects its DRAM chips straight to the memory controller with no register in between. This keeps cost and latency low, but it limits how many modules each channel can carry. That is why UDIMMs are used in single processor servers with only a few slots.

The E at the end of PC3-12800E tells you the module has ECC. Unlike desktop memory, it can detect and correct single-bit errors, which is why HPE specifies it for servers. Registered DIMMs, marked R, use a different design and must never be combined with unbuffered modules in the same machine.

On the MicroServer Gen8, the maximum supported memory is 16GB, reached with two 8GB unbuffered modules. A pair of 4GB kits gives 8GB, which is enough for many file server and light virtualisation roles.

New HPE 669322-B21

New units suit fresh builds and buyers who prefer components that have never been installed. They also fit well where the module goes into a server under an active support plan. See the product page for the warranty on new stock.

Refurbished HPE 669322-B21

For older Gen8 servers, a Refurbished 669322-B21 keeps upgrade costs down. It is a practical way to replace a faulty module or bring a second slot into use. The product page states the condition and warranty for refurbished units.

Compatibility

HPE support forum answers quoting the QuickSpecs list this kit for:

• HPE ProLiant MicroServer Gen8
• HPE ProLiant ML310e Gen8 v2

The original ML310e Gen8 (without v2) has different DDR3-1600 support, so check your exact model name on the server label. Also look at an existing DIMM to confirm the server is fitted with unbuffered ECC memory before you order.

Related Part Numbers And Alternatives

• HPE 684034-001 is the spare part number for this 4GB module.
• 669238-071 is the assembly number printed on many of these DIMMs.
• HPE 647907-B21 is a 4GB dual rank x8 PC3L-10600E unbuffered low voltage kit.
• HPE 647909-B21 is an 8GB dual rank x8 PC3L-10600E unbuffered low voltage kit.
• HPE 713975-B21 is a 2GB single rank x8 PC3L-12800E unbuffered low voltage kit.
• HPE 500670-B21 2GB DDR3-1333 memory is a smaller DDR3 module in the catalogue.

More options are listed under server memory kits.

How To Check This Is The Right Module

• Read the label on an installed DIMM and look for 4GB 2Rx8 PC3-12800E, or one of the three HPE numbers above.
• Confirm the server is a MicroServer Gen8 or ML310e Gen8 v2.
• Make sure the label ends in E (unbuffered ECC) and not R (registered).
• Check how many slots are free and the maximum memory for your model.
• If mixing with low voltage PC3L modules, be aware the server will run the set at a common voltage and speed.

Buying HPE 669322-B21 in the UK

Euroland IT Store sells to UK businesses, IT teams, resellers and repairers, as well as anyone maintaining small server estates. Go to the product page for condition, warranty, stock and delivery information. Shipping to UK mainland addresses is free for orders that come to over £100 + VAT. Our team is happy to check compatibility if you send the server model and the code on your current memory, or call 0203 209 6002.

Frequently Asked Questions

Does the 669322-B21 work in a MicroServer Gen8?

Yes, the MicroServer Gen8 supports this 4GB PC3-12800E unbuffered ECC kit, and the ML310e Gen8 v2 is also compatible.

Can I use a registered DIMM alongside this kit?

No, registered and unbuffered memory cannot be mixed, and Gen8 entry servers that take this kit need unbuffered ECC modules only.

Is a New or Refurbished module the right choice?

Pick New if you want an unused part for a fresh build, or Refurbished if you need a lower cost replacement for an existing Gen8 server.

How do I find the warranty on this kit?

The warranty for New and Refurbished units is listed on the product page, so check it before placing your order.

Do you deliver the 669322-B21 to all of the UK?

We deliver throughout the UK, UK mainland orders over £100 + VAT ship free, and delivery details appear on the product page.