1GB PC2100 Registered 266MHz 184 pin DDR SDRAM ECC DIMM Compatible Memory RAM for Dell PowerEdge 600SC 650 1600SC SC1600 and PowerVault 725N Server

RAM is pretty cheap, so I might recommend you eventually upgrade to 3200+ mhz if your motherboard/CPU supports those speeds, but it's not a big deal for now. You can easily live with what you have, it's enough.

Buy NEMIX RAM 1GB (1X1GB) DDR 266MHZ PC2100 2Rx8 2.5V 184-PIN Non-ECC UDIMM Unbuffered Desktop Memory: Memory - Amazon.com FREE DELIVERY possible on eligible purchases

1Gig (1024MB) DDR SDRAM PC 2100 ECC REGISTERED 266MHZ. Please verify with your computer manual or try Memory Configurator to confirm that this is the correct memory for your system. Advance replacements cannot be made because of compatibility. All orders placed through our Memory Configurator is guaranteed to work.

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NEMIX RAM 1GB (1X1GB) DDR 266MHZ PC2100 2Rx8 2.5V 184-PIN Non-ECC UDIMM Unbuffered Desktop Memory CAS Latency: CL3 Voltage: 2.50V Chipset: Major OEM Samsung, Micron, Hynix Buffered/Registered: Unbuffered Model #: MD2100-128K01-606

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Buy Kingston ValueRAM 256MB 266MHZ DDR PC2100-DIMM CL2 (KVR266X64C2/256): Memory - Amazon.com FREE DELIVERY possible on eligible purchases

Upgrade your system with high-performance PC2100 DDR-266 RAM. Choose from brands like Dell, HP, and Samsung. Shop Memory on eBay for better computing!

Kingston Technology 2GB (2 x 1GB) 184-Pin PC2100 266Mhz DDR ECC Registered Server RAM Upgrade Model #: KTC-ML0G3/2G