Acer ASPIRE 4253, Service Manual, Page: 35 / 226

Hardware Specifications and Configurations
1-25
CPU Fan True Value Table)
GPU Fan True Value Table)
System Memory
Temperature (°C) Fan Speed (RPM) SPL Spec (dBA)
Fan on = 45C; Fan Off = 42C 2350 28
Fan on = 50C; Fan Off = 48C 2800 31
Fan on = 58C; Fan Off = 56C 3100 34
Fan on = 63C; Fan Off = 61C 3500 37
Fan on = 82C; Fan Off = 80C 3850 40
Fan on = 92C; Fan Off = 85C 5V N/A
Throttling 50%: On =95C; Off=90C
OS Shut down: 100C
H/W Shut down: 105C
Temperature (°C) Fan Speed (RPM) SPL Spec (dBA)
Fan on = 45C; Fan Off = 42C 2350 28
Fan on = 50C; Fan Off = 48C 2800 31
Fan on = 58C; Fan Off = 56C 3100 34
Fan on = 63C; Fan Off = 61C 3500 37
Fan on = 82C; Fan Off = 80C 3850 40
Fan on = 92C; Fan Off = 85C 5V N/A
Throttling 50%: On =95C; Off=90C
OS Shut down: 100C
H/W Shut down: 105C
Item Specification
Memory controller Built in at CPU
Memory size DDRIII 1333 512 MB, 1 GB, 2 GB, 4 GB
DIMM socket number 2 sockets
Supports memory size per socket 4 GB
Supports maximum memory size 8 GB
Supports DIMM type SDRAM memory interface design
Note: Processor supports up to 1066 Mhz only
Supports DIMM Speed 800/1066 SDRAM
Support DIMM voltage 1.5V
Supports DIMM package Standard 204P