Acer 420 Hardware Specifications and Configurations, Processor, Second Level Cache, System Memory

Hardware Specifications and Configurations

Processor

Item	Specification
CPU type	Intel Pentium 4
CPU package	/ ∝ PGA478 package
CPU core voltage	Depend on CPU VID
CPU I/O voltage	1.2V
BIOS
Item	Specification
BIOS vendor	Phoenix
BIOS Version	PhoenixBIOS 4.0 Release 6.0
BIOS ROM type	Flash ROM
BIOS ROM size	512KB
BIOS package	TSOP
Supported protocols	ACPI 1.0b,PC Card 95, SM BIOS 2.3, EPP/IEEE 1284, ECP/IEEE 1284
	1.7 & 1.9, PCI 2.2, PnP 1.0a, DMI 2.0, PS/2 keyboard and mouse, USB,
	VGA BIOS, CD-ROM bootable,
BIOS password control	Set by setup manual
Second Level Cache
Item	Specification
Cache controller	Built-in CPU
Cache size	512KB
1st level cache control	Always enabled
2nd level cache control	Always enabled
Cache scheme control	Fixed in write-through
System Memory
Item	Specification
Memory controller
Memory size	256/512MB
DIMM socket number	1 sockets (2 banks)
Supports memory size per socket	512MB
Supports maximum memory size	1G (by two 512MB SO-DIMM module)
Supports DIMM type	DDR Synchronous DRAM
Supports DIMM Speed	133 MHz
Supports DIMM voltage	2.5V/1.25V
Supports DIMM package	200-pin soDIMM
Memory module combinations	You can install memory modules in any combinations as long as they
	match the above specifications.

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