Acer Aspire E1-421 Acer Aspire E1-421 Notebook Service Guide - Page 35

CPU Fan True Value Table Temperature (°C) Fan Speed (RPM) Fan on = 40°C; Fan Off = 35°C 2400 Fan on = 50°C; Fan Off = 45°C 2600 Fan on = 62°C; Fan Off = 55°C 3000 Fan on = 74°C; Fan Off = 68°C 3300 Fan on = 86°C; Fan Off = 80°C 3600 Fan on = 95°C; Fan Off = 90°C 5V  Throttling 50%: On =97°C; Off=93°C  OS Shut down: 103°C  H/W Shut down: 105°C SPL Spec (dBA) 28 31 34 37 40 N/A System Memory Item Memory controller Memory size DIMM socket number Supports memory size per socket Supports maximum memory size Supports DIMM type Supports DIMM Speed Support DIMM voltage Supports DIMM package Specification Built in at CPU DDR3 800/1066/1333 2 GB (256 Meg x 64), 4 GB (512 Meg x 64) 2 sockets 4 GB 8 GB  SDRAM memory interface design Note: Processor supports up to 1333 Mhz only 800/1066/1333 SODIMM 1.5V±0.075V Standard JEDEC 204-pin Memory Combinations Slot 1 (MB) 0 2048 2048 4096 0 4096 Slot 2 (MB) 2048 0 2048 0 4096 4096 Total Memory (MB) 2048 2048 4096 4096 4096 8192 Hardware Specifications and Configurations 1-25