We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green circuit board with black memory chips and gold edge connectors

HP

HP 340K1AA 16GB DDR5 4800 ECC Registered DIMM

SKU CH-7XAT-8B00P MPN 340K1AA

16 GB DDR5-4800 ECC registered DIMM with Intel XMP 3.0 for HP Z4 G5 workstations

  • Total capacity16 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ECC supportECC
  • Memory profilesIntel XMP 3.0
  • ECC protection guards data integrity with built-in error correction
  • Registered signal processing stabilises heavy workloads on workstation platforms
  • DDR5 4800 MT/s bandwidth accelerates memory-intensive applications
  • 16 GB single-module capacity simplifies future expansion
  • 288-pin DIMM form factor fits HP Z4 G5 workstation slots

Workstation DDR5 ECC module

The HP 340K1AA is a 16GB DDR5 registered DIMM built for workstation platforms that require error-correcting memory. It delivers 4800 MHz speed with a PC5 38400 data rate in a single 288-pin module. This part targets professionals who need data integrity for compute-intensive tasks.

Registered DDR5 platform constraints

Registered DDR5 memory operates only on motherboards designed for registered DIMMs and the DDR5 standard; it will not fit or function in consumer boards wired for unbuffered modules. The 4800 MHz JEDEC rate is the baseline, so systems without XMP 3.0 support will run at this speed without manual tuning. Buyers who need higher frequencies or consumer-platform compatibility should look elsewhere.

ECC registered signal processing

The defining specification is the registered ECC design, which adds a register between the DRAM and the memory controller to stabilise heavy loads and corrects single-bit errors in flight. If your workstation motherboard requires registered ECC DIMMs, this module meets that requirement; if it calls for unbuffered non-ECC memory, this is not the correct part.

How it compares

Measured against everything we stock in Desktop RAM, at today’s prices. Recalculated every night.

Price $196.99
Pricier than about 67% of the 3,647 comparable items (median $90.99).
Total capacity 16 GB
Typical for this category: the median of 3,251 items is 16 GB.
Price per GB $12.31 per GB
Pricier than about 77% of the 3,251 comparable items (median $6.75 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Total capacity16 GB
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
ECC supportECC
Memory profilesIntel XMP 3.0
Size & build
Shipping weight0.09 kg
Package size229 × 152 × 13 mm

Questions about this item

Should I choose the single 16GB module or look for a kit?

This is a single 16GB DIMM. Add a second identical module later to enable dual-channel bandwidth on your workstation.

What does the 4800 MHz rating deliver in a real system?

The module runs at 4800 MHz DDR5-4800 (PC5-38400). Actual throughput depends on your CPU and motherboard memory controller.

How does the 288-pin DDR5 interface and registered design affect compatibility?

It fits standard 288-pin DDR5 DIMM slots. Registered signal processing and ECC require a workstation-class platform that supports both features.

More in Desktop RAM

Similar items