you can ad up to 1000 gb to this computer and add 4 more ghz or prossesing memmory this computer new is 950 that i can find im only asking 200obo comes with keyboard mouse and dell monitor and hp printer

　　a brand new vertion of windows 7 AMD 64X2 dule core prosesor. runs fast great gameing computer has 150gb hard drive right now can hold to and up to 1000gb hard drive

　　system was just rated at 3.4 from windows 7

　　Specifications

　　Dellâ„¢ Dimensionâ„¢ E521 Service Manual

　　Processor

　　Processor type

　　AMD Athlonâ„¢ 64 X2 dual-core processor

　　AMD Athlon 64 processor

　　AMD Sempronâ„¢ processor

　　Level 2 (L2) cache

　　Up to 1 MB per core

　　Up to 256 KB for Sempron processors

　　Memory

　　Type

　　533-MHz, 667-MHz, 800-MHz (when available) DDR2 SDRAM

　　Memory connectors

　　four

　　Memory capacities

　　256 MB, 512 MB, or 1 GB non-ECC

　　Maximum memory

　　4 GB

　　NOTE: See Addressing Memory With 4-GB Configurations to verify the amount of memory available to the operating sys

　　Computer Information

　　Chipset

　　Nvidia GeForce 6150LE

　　RAID Support

　　RAID 1 (Mirroring)

　　DMA channels

　　eight

　　Interrupt levels

　　24

　　BIOS chip (NVRAM)

　　4 Mb

　　NIC

　　Integrated network interface capable of 10/100 communication

　　Video

　　Type

　　Nvidia integrated video (DirectX 9.0 Shader Model 3.0 Graphics Processing Unit) or optional PCI Express x16 graphics card

　　Audio

　　Type

　　Sigmatel 9227 CODEC (7.1 Channel audio)

　　Expansion Bus

　　Bus type

　　PCI 2.3

　　PCI Express 1.0A

　　SATA 1.0 and 2.0

　　USB 2.0

　　Bus speed

　　PCI: 133 MB/s

　　PCI Express:

　　x1 slot bidirectional speed - 500 MB/s

　　x16 slot bidirectional speed - 8 GB/s

　　SATA: 1.5 Gbps and 3.0 Gbps

　　USB: 480 Mbps high speed, 12 Mbps full speed, 1.2 Mbps low speed

　　PCI

　　connectors

　　two

　　connector size

　　124 pins

　　connector data width (maximum)

　　32 bits

　　PCI Express

　　connector

　　one x1

　　connector size

　　36 pins

　　connector data width (maximum)

　　1 PCI Express lane

　　PCI Express

　　connector

　　one x16

　　connector size

　　164 pins

　　connector data width (maximum)

　　16 PCI Express lane

　　Drives

　　Externally accessible:

　　Bays

　　one 3.5-inch drive bay (FlexBay)

　　two 5.25-inch drive bays

　　Available devices

　　Serial ATA drives (4), floppy drive, USB memory devices, CD/DVD drive, and Media Card Reader

　　Internally accessible:

　　two bays for 1-inch high serial ATA hard drives

　　Connectors

　　External connectors:

　　Video

　　15-hole connector

　　Network adapter

　　RJ-45 connector

　　USB

　　two front-panel and four back-panel USB 2.0-compliant connectors

　　Audio

　　six connectors for 7.1 support

　　System board connectors:

　　Serial ATA

　　four 7-pin connectors

　　Internal USB device

　　one 10-pin connector (supports two USB ports)

　　Floppy drive

　　one 34-pin connector

　　Fan

　　one 5-pin connectors

　　PCI 2.3

　　two 124-pin connectors

　　PCI Express x1

　　one 36-pin connector

　　PCI Express x16

　　one 164-pin connector

　　Front panel

　　one 40-pin connector

　　Processor

　　one 940-pin connector

　　Memory

　　four 240-pin connectors

　　Power 12V

　　one 4-pin connector

　　Power

　　one 24-pin connector

　　Controls and Lights

　　Front of computer:

　　Power button

　　push button

　　Power light

　　green light â€" Blinking green in sleep state; solid green for power-on state.

　　amber light â€" Blinking amber indicates a problem with the power supply inside the computer. If the system cannot boot and there is a solid amber light, this indicates a problem with the system board (see "Power Problems" in your Owner's Manual)

　　Diagnostic lights

　　four lights on the front panel (see Diagnostic Lights.)

　　Standby power light

　　AUX_PWR_LED on the system board

　　Hard-drive activity light

　　green light â€" When the computer is reading data from or writing data to the hard drive.

　　LAN indicator light

　　green light â€" Solid green indicates that a LAN (local area network) connection is established.

　　Rear of computer:

　　Link integrity light (on integrated network adapter)

　　green light â€" A good connection exists between a 10 Mbps network and the computer.

　　orange light â€" A good connection exists between a 100 Mbps network and the computer.

　　off (no light) â€" The computer is not detecting a physical connection to the network.

　　Network activity light (on integrated network adapter)

　　yellow blinking light

　　Power

　　DC power supply:

　　Wattage

　　305 W

　　Maximum heat dissipation

　　1041 BTU/hr

　　NOTE: Heat dissipation is calculated by using the power supply wattage rating.

　　Voltage (see the safety instructions located in the Product Information Guide for important voltage setting information)

　　90 to 135 V and 180 to 265 V at 50/60 Hz

　　Physical

　　Height

　　41.4 cm (16.3 inches)

　　Width

　　18.8 cm (7.4 inches)

　　Depth

　　45.7 cm (18.0 inches)

　　Weight

　　12.7 kg (28.0 lb

　　Environmental

　　Temperature:

　　Operating

　　10° to 35°C (50° to 95°F)

　　Storage

　　â€"40° to 65°C (â€"40° to 149°F)

　　Relative humidity

　　20% to 80% (noncondensing)

　　Maximum vibration:

　　Operating

　　5 to 350 Hz at 0.0002 G2/Hz

　　Storage

　　5 to 500 Hz at 0.001 to 0.01 G2/Hz

　　Maximum shock:

　　Operating

　　40 G +/- 5% with pulse duration of 2 msec +/- 10% (equivalent to 20 in/sec [51 cm/sec])

　　Storage

　　105 G +/- 5% with pulse duration of 2 msec +/- 10% (equivalent to 50 in/sec [127 cm/sec])

　　Altitude:

　　Operating

　　â€"15.2 to 3048 m (â€"50 to 10,000 ft)

　　Storage

　　â€"15.2 to 10,668 m (â€"50 to 35,000 ft)

　　call me or tex me at

　　ask fpr richard i can deliver the computer to u or have u pick it up

　　Location: munds park