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RamCity guarantees 100% that all modules below are compatible with the NEC Express 5800 Series 120Ra-e1

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RamCity 8GB CL5 ECC Registered 240-pin DIMM Kit (2x4GB)
Part #. 2xBVR • DDR2-667 / PC2-5300 • CL5 • ECC • Dual Rank • Registered • 1.8V • 36-chip 256M x4 •  more info
Buy new: $278.99 $217.99

10 in Stock Free Shipping Guaranteed Compatible

Kingston 8GB ECC Registered 240-pin DIMM Kit (2x4GB)
Part #. KTN-WA667K2/8G • DDR2-667 / PC2-5300 • ECC • Registered • 1.8V •  more info
Buy new: $648.99 $506.99

Ships in 7 Days Free Shipping Guaranteed Compatible

RamCity 4GB CL5 ECC Registered 240-pin DIMM Kit (2x2GB)
Part #. 2xAEZ • DDR2-667 / PC2-5300 • CL5 • ECC • Dual Rank • Registered • 1.8V • 36-chip 128M x4 •  more info
Buy new: $144.99 $112.99

Ships in 7 Days Free Shipping Guaranteed Compatible

Kingston 4GB ECC Registered 240-pin DIMM Kit (2x2GB)
Part #. KTN-WA667K2/4G • DDR2-667 / PC2-5300 • ECC • Registered • 1.8V •  more info
Buy new: $336.99 $262.99

Ships in 7 Days Free Shipping Guaranteed Compatible

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We guarantee your memory upgrade will be 100% compatible, or return it within 1 Whole Year for a full refund.
Need some help installing your upgrade? See our guides and videos.
System Specifications
Standard Memory:
  • 1GB (Removable)
Maximum Memory:
  • 24GB
Expansion:
  • 6 Sockets (3 banks of 2)
CPU/Chipset:
  • Intel Xeon Intel 5100
Bus Architecture:
  • PCI; SSD - SATA 2.5-inch
Mfr's System P/N's:
  • N8100-1452Y; N8100-1453Y
Upgrade Path:
  • Virtually any configuration up to 24GB can be reached using 4 and 8GB kits.