The Apple 661-7511 (661-7511 - Apple 8GB DDR3-1600MHz PC3-12800 non-ECC Unbuffered CL11 204-Pin SoDIMM 1.35V Low Voltage Memory Module for iMac 21.5) is a Desktop Memory component engineered for sustained enterprise-class workloads. This part addresses common procurement scenarios where exact-match replacement, capacity expansion, or new-build deployment is required. Technical specifications include capacity of 8 GB, pc standard of PC3-12800, number of sticks of 1, frequency of 1600 MHz, connector of 204-pin, voltage of 1.35V, memory class of ECC, Unbuffered, SoDIMM. Common deployment scenarios include database server upgrades (in-memory caches, SQL buffer pools), VMware ESXi / Hyper-V virtualization host memory expansion, GPU compute scratch pools, and HPC node provisioning. Pro Disk Network sources the 661-7511 through reputable distribution channels and applies a verification check against the OEM compatibility matrix before each unit is added to active inventory. Listed compatibility: iMac 21. Cross-verify against the OEM compatibility matrix before deployment for production workloads. 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 661-7511 is a Apple desktop memory component with capacity 8 GB, pc standard PC3-12800, number of sticks 1. Pro Disk Network sells the 661-7511 for $169.45 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 661-7511 are shown on this page.
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Quick Answer: What servers is the 661-7511 compatible with?
The 661-7511 is a Apple desktop 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 661-7511 ship?
If in stock, the 661-7511 ships same business day on US orders placed before 3 pm ET. Most US ZIP codes receive next-business-day or 2-day delivery via FedEx/UPS Ground or Express. Bulk and project orders shipping in pallets are typically dispatched within 24-48 hours.
The 661-7511 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 661-7511?
The 661-7511 is a Apple server memory module with capacity 8 GB and pc standard PC3-12800, manufactured by Apple. 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 661-7511
Pros
Recovery from no-POST errors when refreshing aging servers
Cons
Refurbished tier may show minor cosmetic markings
Not optimised for overclocked workstation builds
Frequently Asked Questions about 661-7511
Is the 661-7511 a genuine Apple part?
Yes. Pro Disk Network sources every 661-7511 as factory-original Apple inventory. New units arrive sealed in OEM packaging; refurbished units are pulled from decommissioned Apple servers, surface-tested, and re-warranted by Pro Disk Network for 90 days.
What servers is the 661-7511 compatible with?
The 661-7511 is a Apple desktop 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 661-7511 ship?
If in stock, the 661-7511 ships same business day on US orders placed before 3 pm ET. Most US ZIP codes receive next-business-day or 2-day delivery via FedEx/UPS Ground or Express. Bulk and project orders shipping in pallets are typically dispatched within 24-48 hours.
What is the warranty on the 661-7511?
New 661-7511 units carry the full Apple 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 661-7511?
Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.
661-7504 — 661-7504 - Apple 3.1GHz CPU Logic Board (Motherboard) for iMac 21.5-inch Late 2013 — $2,562.29
661-7506 — 661-7506 - Apple 1TB 5400RPM SATA 6Gb/s 2.5-inch Hard Drive for iMac 21.5 — $642.43
661-7507 — 661-7507 - Apple 128GB Flash Storage Solid State Drive for iMac 21.5/27 — $382.59
661-7508 — 661-7508 - Apple 256GB Flash Storage 2.5-inch Solid State Drive for iMac 27 — $1,786.11
661-7509 — 661-7509 - Apple 512GB Flash Storage Solid State Drive for iMac 27 — $2,562.29
661-7510 — 661-7510 - Apple 4GB DDR3-1600MHz PC3-12800 non-ECC Unbuffered CL11 204-Pin SoDIMM 1.35V Low Voltage Memory Module for iMac 21.5 — $156.46
661-7512 — 661-7512 - Apple 185 Watts Power Supply for iMac 21.5-inch 2013-2015 — $282.20
661-7513 — 661-7513 - Apple LCD Display Assembly for iMac 21.5 — $942.62
661-7514 — 661-7514 - Apple 802.11ac Wireless LAN / Bluetooth Card for iMac 27-inch (Late 2013) — $285.45
661-7517 — 661-7517 - Apple 3.4GHz CPU Logic Board (Motherboard) for iMac 27-inch Late 2013 A1419 — $887.32
661-7533 — 661-7533 - Apple Firepro D300 2GB Video Graphics Card — $919.74
Pro Disk Network Buyer’s Guide: Desktop 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 661-7511, 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.