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SAMSUNG 256MB (2 x 128MB) ECC MR18R0828AN1‑CK7 RIMM RAMBUS 700-45 700MHz
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SAMSUNG 256MB (2 x 128MB) ECC MR18R0828AN1‑CK7 RIMM RAMBUS 700-45 700MHz
Price: US $19.99
🧠 Samsung MR18R0828AN1‑CK7 – Technical Specifications

  • Manufacturer: Samsung

  • Model Number: MR18R0828AN1‑CK7

  • Configuration: Kit of 2 × 128 MB RIMM modules = 256 MB total

  • Memory Type: RDRAM (Rambus DRAM)

  • Form Factor: 184‑pin RIMM with metal heat spreader — standard for RDRAM ECC modules

  • Speed Rating: PC700‑45 — 700 MHz effective, 45 ns CAS latency

  • Error Checking: ECC (Error-Correcting Code) — intended for workstation/server use

  • Buffered/Registered: Yes (required for ECC RDRAM)

  • Voltage: 2.5 V

  • Organization: 8×16 Mb DRAM chips per module, ECC-enabled

  • Part Code Meaning: “18R0” indicates ECC, “828” denotes 128 MB, “AN1” is Samsung internal bin, “CK7” shows PC700‑45 spec

  • Legacy Status: Discontinued—modules available used or via legacy suppliers

🛠️ Key Features & Installation Requirements

  • ECC Workstation/Server memory

  • Must be installed in matched pairs

  • C‑RIMMs (continuity RIMMs) are required in any unused RIMM slots

  • Requires ECC-capable motherboard and BIOS

  • Designed for Intel 820/840 chipset platforms using ECC RDRAM

🖥️ Compatible Systems

This kit serves ECC RDRAM-supporting systems, notably workstation or server-grade machines based on Intel 820/840 chipset.

✅ OEM Workstations & Servers

  • IBM IntelliStation M Pro series (early ECC RDRAM models)

  • IBM Z Pro workstation (ECC RDRAM enabled)

  • Dell Precision 220/420 (configured with PC700 ECC RDRAM)

  • Compaq HP Kayak XA/XU/XM workstations with ECC RDRAM

  • HP Professional Workstation AP550 (ECC RDRAM edition)

✅ Custom/Server Motherboards

  • Intel VC820 / D820LP / D820GB (Socket 370/423, ECC enabled)

  • Intel OR840 server board (ECC dual-channel RDRAM support)

  • Supermicro P3TDE / P3TDE6 (ECC server-grade boards)

  • ASUS CUR-DLS (dual Slot-1 workstation motherboard)

  • Tyan Thunder 2500 (S1867) dual-CPU ECC workstation board

❌ Not Compatible With:

  • Consumer desktops lacking ECC BIOS (e.g., Dell Dimension series)

  • DDR/SDRAM-based boards (Intel 845/850 chipsets)

  • PC800/PC1066 RDRAM motherboards (require faster RDRAM modules)

⚠️ Installation & Legacy Notes

  • ECC must be enabled in BIOS

  • C‑RIMMs required to maintain signal continuity in empty slots

  • RDRAM generates heat — ensure adequate cooling



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