Dell OptiPlex 755 - Manual (Page 133)

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Mini Tower Computer Specifications
User's Guide
Microprocessor
Microprocessor type The following are supported:
l Intel® Core™2
l Intel vPro™
l Intel Celeron®
Internal cache L1: up to 128 KB;
L2: up to 8 MB (depending on your processor)
Memory
Type 667-MHz or 800-MHz DDR2 SDRAM
Memory connectors 4
Memory modules supported 512-MB, 1-GB, or 2-GB non-ECC
Minimum memory dual-channel: 1 GB
single-channel: 512 MB
NOTE: 512 MB is the minimum shipping configuration.
Maximum memory 64-bit operating system: 8 GB
32-bit operating system: 4 GB
BIOS address F0000h
Computer Information
Chipset Intel Q35 Express Chipset w/ICH9DO
Data bus width 64 bits
Address bus width 32 bits
DMA channels eight
Interrupt levels 24
BIOS chip (NVRAM) 32 Mb
NIC integrated network interface with ASF 1.03 and 2.0
support as defined by DMTF
Capable of 10/100/1000 communication
iAMT 3.0
Video
Type Intel Graphics Media Accelerator 3100 or DVI add-in
card in PCI Express x16 slot or PCI Express x16
graphics card
Audio
Type ADI 1984 High Definition Audio
Stereo conversion 24-bit analog-to-digital; 24-bit digital-to-analog
Controllers
Drives four SATA controllers and one eSATA controller
supporting one device each