Acer AR380 F1 User Manual - Page 74

56 3 System upgrades Memory identification Generally, there are some memory information printed on the label of the DIMM module. Different vendors may have different formats but the convention is usually like this: Item Density Rank Bit Organization Speed Description 1GB, 2GB,4GB,8GB. Intel Xeon Processor 5500 Series CPU supports DIMM organized by 1Gb or 2Gb DRAM chips. 1R = Single Rank 2R = Dual Rank 4R = Quad Rank Note: If quad rank DIMM is used, a maximum of only two DIMMs per channel can be supported. This platform supports x4 and x8. Note: It is not recommend to mix DIMMs with different bit organizations in one system. PC3 - 6400 => DDR3- 800 PC3 - 8500 => DDR3- 1066 PC3 - 10600 => DDR3- 1333 PC3 - 12800 => DDR3- 1600 Installing a memory module: Warning! Memory of the identical size, speed, and organization must be installed in the same colored DIMM slots. 1 Observe the pre-installation instructions on page 26.