Specifications
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512 megabytes (MB), 32 × 16 × 64, non-ECC, un-buffered, PC333/PC2700 184-pin DDR DIMM

Feature Description
Megabit Technology 256-megabit density per DRAM chip (32 MB)
Number of DRAM Chips on DIMM 16
Data Bits (ECC) 64 (no)
Buffered No
Module Capacity 512 MB
Compliance PC333/PC2700 DDR 184-pin

Explanations of Terms

Megabit technology - Refers to the density of each DRAM chip on the memory module. This number corresponds to the first number listed in the memory description listed above. Check the motherboard specifications to find out what Megabit technology the motherboard is compatible with before purchasing DIMMs.

Number of DRAM chips on the DIMM - Refers to the number of memory chips on the DIMM.

Data bits (ECC) - Sixty-four data bits are used for non-ECC DIMMs. Seventy-two data bits are used for ECC DIMMs. ECC is an advanced type of parity that allows for error correction rather than just error detection.

Buffered - Buffered DIMMs are generally used in high-end workstations and servers. Buffered DIMMS allow for greater addressing by the memory controller.

Capacity - The memory capacity of the DIMM.

Compliance - Only the number of pins and the PCXXX standard are listed. There are other JDEC, FCC and Intel specifications that all DIMMs of a particular type have to meet. Gateway DIMMs meet industry standards. For example, PC133 DIMMs are able to clock down to PC100 and PC66 specifications.