RF705 Dell Optiplex 745 DT Motherboard

Desktop Computer Specifications

Microprocessor

Microprocessor type
Intel® Pentium® 4, Pentium® D, Celeron®, or Core™ processor

Internal cache
at least 512 KB eight-way set associative, write-back SRAM





Memory

Type
533, 667, or 800 MHz DDR2 SDRAM

NOTE: 2-GB 800-MHz memory modules are not supported.

Memory connectors
4

Memory modules supported
256 MB, 512 MB, 1 GB, or 2 GB non-ECC

Minimum memory
dual-channel: 512 MB;
single-channel: 256 MB

Maximum memory
At 533 or 667 MHz: 8 GB

At 800 MHz: 4 GB

BIOS address
F0000h





Computer Information

Chipset
Intel® Q965 Express

Data bus width
64 bits

Address bus width
32 bits

DMA channels
eight

Interrupt levels
24

BIOS chip (NVRAM)
8 Mb

NIC
integrated network interface with ASF 1.03 and 2.0 support as defined by DMTF

Capable of 10/100/1000 communication





Video

Type
Intel® Graphics Media Accelerator 3000 or PCI Express x16 graphics card





Audio

Type
ADI 1983 High Definition Audio

Stereo conversion
20-bit analog-to-digital; 20-bit digital-to-analog





Controllers

Drives
two SATA controllers supporting one device each





Expansion Bus

Bus type
PCI 2.3
PCI Express 1.0A
SATA 1.0A and 2.0
USB 2.0

Bus speed
PCI: 133 MB/s
PCI Express x16: 8 GB/s bidirectional speed
SATA: 1.5 Gbps and 3.0 Gbps
USB: 480 Mbps

Cards
half-length, full-height cards supported with optional riser-card cage

Default: no riser-card cage
low-profile cards supported

PCI


connectors
two

card size
low profile

connector size
120 pins

connector data width

(maximum)
32 bits

PCI Express


connectors
one x16

card size
low profile

power
25 W maximum

connector size
120 pins (x16)

connector data width (maximum)
16 PCI Express lanes (x16)

Optional: full-height PCI Express riser-card cage
low-profile and full-height cards supported

PCI


connectors
two

card size
one low-profile card and one full-height card

connector size
120 pins

connector data width

(maximum)
32 bits

PCI Express


connectors
one x16

card size
full-height

power
25 W maximum

connector size
120 pins (x16)

connector data width (maximum)
16 PCI Express lanes (x16)

Optional: full-height PCI riser-card cage
low-profile and full-height cards supported

PCI


connectors
three

card size
one low-profile card and two full-height cards

connector size
120 pins

connector data width

(maximum)
32 bits





Drives

Externally accessible
one 3.5-inch drive
one bay for optical drive or optional second hard drive

Internally accessible
one bay for a 1-inch-high hard drive





Connectors

External connectors:

Serial
9-pin connector; 16550C-compatible

Parallel
25-hole connector (bidirectional)

Video
15-hole VGA connector

Network adapter
RJ45 connector

Optional PS/2 with secondary serial port adapter
two 6-pin mini-DINs

USB
two front-panel and six back-panel USB 2.0–compliant connectors

Audio
two connectors for line-in/ microphone and line-out; two front-panel connectors for headphones and microphone

System board connectors:

SATA
two 7-pin connectors

internal USB
10-pin header for optional media card reader (3.5-inch bay device)

Floppy drive
34-pin connector

Serial
12-pin connector for optional second serial port card

Fan
5-pin connector

PCI 2.3
two 120-pin connectors

Front panel
40-pin connector