$454.13In Stock — Usually Ships in 1–3 Business Days
About the 540-6400
Sourced for enterprise IT teams, the Sun 540-6400 (540-6400 - Sun 1GB Kit (2 X 512MB) DDR-333MHz PC2700 ECC Registered CL2 184-Pin DIMM 2.5V Memory) is a Server Memory component appropriate for new-build, expansion, or warranty-replacement procurement. Technical specifications include capacity of 1 GB, number of sticks of 2, frequency of 333 MHz, connector of 184-pin, voltage of 2.5V, memory class of ECC, Registered. Appropriate for virtualization hosts, application servers, in-memory analytics, render farms, CAD/EDA workstations, and any workload constrained by RAM rather than CPU. Pro Disk Network sources the 540-6400 through reputable distribution channels and applies a verification check against the OEM compatibility matrix before each unit is added to active inventory. Each unit ships from the US with dispatch in 1–3 business days. 90-day Pro Disk Network functional warranty included; free US ground shipping on orders over $150.
The 540-6400 is a Sun server memory component with capacity 1 GB, number of sticks 2, frequency 333 MHz. Pro Disk Network sells the 540-6400 for $454.13 with US shipping in 1–3 business days and a 30-day return guarantee.
Reviewed By
Reviewed by:Pro Disk Network Engineering Team — . Specifications, compatibility, and pricing for the 540-6400 are shown on this page.
Trust Signals
US-based LLC — 7345 W Sand Lake Rd, STE 210, Office 3208, Orlando, FL 32819
US Shipping in 1–3 Business Days — in-stock orders ship via UPS
30-Day Returns — pre-paid label on DOA and defective items
Quick Answer: What servers is the 540-6400 compatible with?
The 540-6400 is a Sun server memory module. Confirm DIMM rank, voltage, and speed against the target server's supported memory list before deployment - mixed configurations may downclock to the slowest installed module. For server-specific population diagrams, email sales@prodisknetwork.com with your server serial number.
How fast does the 540-6400 ship?
If in stock, the 540-6400 ships in 1–3 business days. Most US ZIP codes receive next-business-day or 2-day delivery via FedEx/UPS Ground or Express. Bulk and pallet orders may need extra handling time; we confirm the ship date with your order.
The 540-6400 is deployed by US enterprises, MSPs, government, and education customers across multiple infrastructure scenarios. Below are the most common deployment patterns Pro Disk Network sees in real-world orders.
VMware Cluster Memory — Per-host memory expansion for vSphere ESXi hosts. Match DIMM rank and speed across all sockets to keep memory channels balanced.
In-Memory Database — SAP HANA, Redis Enterprise, Apache Ignite, Aerospike — workloads that scale linearly with DRAM capacity.
Hyper-V Cluster Node — Windows Server 2019/2022 Hyper-V hosts with Storage Spaces Direct. Dynamic memory allocation makes higher-density DIMMs cost-effective.
AI / ML Training — PyTorch and TensorFlow workloads benefit from large host memory pools for dataset preprocessing and CPU-side feature engineering.
What is the 540-6400?
The 540-6400 is a Sun server memory module with capacity 1 GB and number of sticks 2, manufactured by Sun. Pro Disk Network ships this part new and certified-refurbished from our US warehouse with dispatch in 1–3 business days, backed by a 30-day return guarantee.
Pros & Cons of 540-6400
Pros
RDIMM / LRDIMM clearly labelled for population-rule clarity
Cons
Not for laptop SO-DIMM upgrades — server DIMM only
LRDIMM and RDIMM are not interchangeable
Original retail box not always included on refurbished tier
Frequently Asked Questions about 540-6400
Is the 540-6400 a genuine Sun part?
Yes. Pro Disk Network sources every 540-6400 as factory-original Sun inventory. New units arrive sealed in OEM packaging; refurbished units are pulled from decommissioned Sun servers, surface-tested, and re-warranted by Pro Disk Network for 90 days.
What servers is the 540-6400 compatible with?
The 540-6400 is a Sun server memory module. Confirm DIMM rank, voltage, and speed against the target server's supported memory list before deployment - mixed configurations may downclock to the slowest installed module. For server-specific population diagrams, email sales@prodisknetwork.com with your server serial number.
How fast does the 540-6400 ship?
If in stock, the 540-6400 ships in 1–3 business days. Most US ZIP codes receive next-business-day or 2-day delivery via FedEx/UPS Ground or Express. Bulk and pallet orders may need extra handling time; we confirm the ship date with your order.
What is the warranty on the 540-6400?
New 540-6400 units carry the full Sun manufacturer warranty (typically 1 to 5 years depending on product line). Refurbished and bulk-OEM units include a Pro Disk Network advance-replacement warranty (90 days refurbished). DOA replacement is free within 30 days of receipt.
Do you offer bulk pricing for the 540-6400?
Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.
540-6428-01 — 540-6428-01 - Sun 2GB Kit (2 X 1GB) DDR-400MHz PC3200 ECC Registered CL3 184-Pin DIMM Memory for Sun V20z V40z — $202.55
540-6429 — 540-6429 - Sun 4GB Kit (2 X 2GB) DDR-400MHz PC3200 ECC Registered CL3 184-Pin DIMM Memory for V20z V40z — $202.55
540-6429-01 — 540-6429-01 - Sun 4GB Kit (2 X 2GB) DDR-400MHz PC3200 ECC Registered CL3 184-Pin DIMM Memory for Sun V20z V40z — $202.55
540-6439 — 540-6439 - Sun CPU / Memory Uniboard with 4 X US IV+ 1.5GHz — $122.80
Pro Disk Network Buyer’s Guide: Server Memory
Compatibility: Rank, Density, and Channel Population Rules
For server memory, three numbers dominate compatibility: rank, density, and channel population. Mixing rank or density in the same channel forces the memory controller to fall back to the lowest-common-denominator speed and timings, sometimes by 200-400 MHz, which wastes the upgrade you just paid for. Before installing the 540-6400, run the platform's memory configuration utility (Dell DSET, HPE iLO Memory tab, Lenovo XCC Memory page) to identify what's already populated.
Pricing Strategy: New, Bulk, or Refurbished
For production tier-1 databases (SAP HANA, Oracle Exadata-equivalent, SQL Server Always On), use new sealed OEM units only. For VDI hosts, hyperconverged clusters, and general-purpose virtualisation, bulk-OEM is the cost-optimal choice. For development environments, lab gear, and capacity expansion on aging hardware, refurbished is appropriate — the price savings are 60-75% versus new.