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RamCity guarantees 100% that all modules below are compatible with the IBM/Lenovo eServer xSeries BladeCenter JS21 (8844-xxx)

Part #. 2xBXL • DDR2-533 / PC2-4200 • CL4 • ECC • Dual Rank • Registered • 1.8V • 36-chip 256M x4 • more info

Buy new: $475.99 $371.99

Part #. KTM2865/8G • DDR-400 / PC3200 • ECC • Dual Rank • Registered • 1.8V • more info

Buy new: $830.99 $648.99

Part #. KTM2865/4G • DDR-400 / PC3200 • ECC • Dual Rank • Registered • 1.8V • more info

Buy new: $419.99 $327.99

Part #. 2xBHJ • DDR2-533 / PC2-4200 • CL4 • ECC • Dual Rank • Registered • 1.8V • 36-chip 128M x4 • more info

Buy new: $150.99 $117.99

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

Comments:

Standard Memory:

Maximum Memory:

Expansion:

CPU/Chipset:

Bus Architecture:

Mfr's System P/N's:

Upgrade Path:

Any combination of 4 and 8GB kits can be installed to reach configurations up to 16GB.