The Acer Aspire AM1641-U1521A desktop features the 2.0GHz Intel Pentium Dual Core E2180 processor. The Pentium Dual Core has two processing engines that work together, giving this processor much more power than standard 2.0GHz processors.
Specifications
Product MPN
MPN
AM1641U1521A
Key Features
Processor
Intel Pentium D 2 MHz
Installed Memory
2 GB (DDR2 SDRAM)
Recommended Use
Home Use
Operating System 
Microsoft Windows Vista Home
Form Factor 
Desktop
Processor
Processor Manufacturer
Intel
Processor Number
E180
Processor Type 
Intel Pentium D
Processor Speed 
2 MHz
Motherboard
Bus Speed
800 MHz
Video Output Interface
PCI Express
Memory
RAM Technology
DDR2 SDRAM
Installed Cache Memory
1 MB
Max Supported RAM
4 GB
Supported RAM Speeds
667 MHz
Number of Memory Slots
2 x DIMMs
Installed RAM 
2 GB
Technical Features
Expansion Slots
PCI Express x1 x 1 · PCI Express x16 x 1 · PCI x 1
Integrated Input/Output Ports
FireWire (IEEE1394a) x 1 · Serial Port x 1 · PS/2 Mouse x 1 · PS/2 Keyboard x 1 · USB 2.0 x 6 · RJ45 Lan Port x 1
Memory Card Slots
SD Memory Card · CompactFlash Card Type I · CompactFlash Card Type II · Memory Stick · SmartMedia · xD Picture Card · Memory Stick Pro · Micro Drive Memory Stick