Sun part number 540-6257 identifies the 540-6257 - Sun 1.2GHz CPU / Memory UniBoard for Fire V1280 / E2900, an enterprise-grade Memory Boards unit appropriate for data-center, server-room, and workstation deployment. Technical specifications include clock speed of 1.2 GHz. Typical workloads include VMware vSphere VM host memory, Kubernetes worker-node memory pool, in-memory database (Redis, Memcached, SAP HANA), and SAS / Splunk analytic workloads requiring large RAM footprint. Pro Disk Network sources the 540-6257 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 a US fulfillment hub (Hillsboro OR, Atlanta GA, or Phoenix AZ) with same-day dispatch on in-stock orders before 3pm ET. 90-day Pro Disk Network functional warranty included; free US ground shipping on orders over $150.
The 540-6257 is a Sun memory boards component with clock speed 1.2 GHz. Pro Disk Network sells the 540-6257 for $329.63 with same-day US shipping and a 30-day return guarantee.
Reviewed By
Reviewed by:Pro Disk Network Engineering Team — . Specifications, compatibility, and pricing for the 540-6257 are shown on this page.
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Same-Day US Shipping — orders before 3pm ET ship today via UPS
30-Day Returns — pre-paid label on DOA and defective items
Quick Answer: What servers is the 540-6257 compatible with?
The 540-6257 is a Sun memory boards 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 540-6257 ship?
Pro Disk Network dispatches the 540-6257 same-day on orders confirmed before 3 pm ET. Multi-pallet projects requiring crating ship within 2 business days. International shipping (Canada, Mexico, EU, APAC) takes 3-7 business days via DHL Express or FedEx International Priority.
The 540-6257 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.
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.
Tanzu / Kubernetes Workers — Worker node memory expansion for high-density container deployments. Plan for 8–16 GB per moderate Pod baseline.
What is the 540-6257?
The 540-6257 is a Sun server memory module with clock speed 1.2 GHz, manufactured by Sun. Pro Disk Network ships this part new and certified-refurbished from our US warehouse with same-day dispatch on orders placed before 3 PM ET, backed by a 30-day return guarantee.
Pros & Cons of 540-6257
Pros
Recovery from no-POST errors when refreshing aging servers
Cons
Server-grade DDR module — does not work in consumer desktops
Buffered (RDIMM) modules require server motherboards
Confirm voltage and channel rules before mixed-density installs
Frequently Asked Questions about 540-6257
Is the 540-6257 a genuine Sun part?
Yes. Pro Disk Network sources every 540-6257 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 540-6257 compatible with?
The 540-6257 is a Sun memory boards 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 540-6257 ship?
Pro Disk Network dispatches the 540-6257 same-day on orders confirmed before 3 pm ET. Multi-pallet projects requiring crating ship within 2 business days. International shipping (Canada, Mexico, EU, APAC) takes 3-7 business days via DHL Express or FedEx International Priority.
What is the warranty on the 540-6257?
New 540-6257 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 540-6257?
Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.
540-6215 — 540-6215 - Sun 80GB 7200RPM Ultra ATA-100 3.5-inch Hard Drive — $395.34
540-6227 — 540-6227 - Sun 146GB 10000RPM Ultra-320 SCSI LVD Hot-Pluggable 80-Pin 3.5-inch Hard Drive — $480.21
540-6227-01 — 540-6227-01 - Sun 146GB 10000RPM Ultra SCSI 3.5-inch Hard Drive — $402.12
540-6228 — 540-6228 - Sun 512MB Kit (2 X 256MB) PC2100 DDR-266MHz ECC Registered CL2.5 184-Pin DIMM Memory — $231.59
540-6230 — 540-6230 - Sun 2GB Kit (2 X 1GB) DDR-266MHz PC2100 ECC Registered CL2.5 184-Pin DIMM Memory — $254.86
540-6233 — 540-6233 - Sun CPU / Memory UniBoard with 4x US IV 1200MHz — $194.74
540-6236 — 540-6236 - Sun 1GB Kit (2 X 512MB) DDR-400MHz PC3200 ECC Registered CL3 184-Pin DIMM Single Rank Memory — $250.88
540-6237 — 540-6237 - Sun 2GB Kit (2 X 1GB) DDR-400MHz PC3200 ECC Registered CL3 184-Pin DIMM Memory — $202.55
540-6238 — 540-6238 - Sun 4GB Kit (2 X 2GB) DDR-400MHz PC3200 ECC Registered CL3 184-Pin DIMM Memory — $202.55
540-6238-01 — 540-6238-01 - Sun 4GB Kit (2 X 2GB) DDR-400MHz PC3200 ECC Registered CL3 184-Pin DIMM Memory — $202.55
Pro Disk Network Buyer’s Guide: Memory Boards
Compatibility: Rank, Density, and Channel Population Rules
Memory population order for Xeon Scalable is documented in the motherboard manual; the typical rule is to populate channels symmetrically across both CPU sockets and across all six channels per socket. For two-socket builds with eight DIMMs, populate the white slot first on each channel; for sixteen-DIMM builds, populate both slots on every channel. Asymmetric population leaves performance on the table.
Pricing Strategy: New, Bulk, or Refurbished
The 540-6257 is available across three procurement tiers, and the choice is driven by criticality, warranty coverage, and budget. New (sealed OEM) units carry the full Sun manufacturer warranty and command a 20-30% premium over bulk-OEM tier. New (bulk-OEM) units are factory-fresh modules sold without retail box. Refurbished units come from decommissioned servers, are individually MemTest-validated, and carry a 90-day advance-replacement warranty.