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Onboard Devices

790i Ultra SLI Motherboards Compared
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790i "Mystery Motherboard" (Revision 1.0)
Northbridge Nvidia nForce 790i Ultra SLI SPP
Southbridge Nvidia nForce 790i Ultra SLI MCP
Voltage Regulator Eight Phases (Digital)
BIOS (redacted) (06/16/2008)
333.3 MHz (FSB1333) 333.3 MHz (+0.0%)
Clock Generator Nvidia
Connectors and Interfaces
Onboard 3x PCIe x16 (Transfer Modes: 2x 2.0, 1x 1.0)
2x PCIe x1
2x PCI 2.2
2x USB 2.0 (2 ports per connector)
1x IEEE-1394 FireWire
1x Serial Port header
1x Floppy
1x Ultra ATA (2 drives)
6x Serial ATA 3.0Gb/s
1x Front Panel Audio
1x CD-Audio In
1x Fan 4 pins (CPU)
3x Fan 3 pins (Chassis/Power)
1x Internal Power Button
1x Internal Reset Button
1x Internal CLR_CMOS Button
IO panel 2x PS2 (keyboard + mouse )
2x RJ-45 Network
6x USB 2.0
2x External SATA
1x IEEE-1394 FireWire
Mass Storage Controllers
nForce 790i MCP 6x SATA 3.0 Gb/s (RAID 0, 1, 0+1, 5, JBOD)
JMicron JMB362 PCIe 2x External SATA 3.0 Gb/s (RAID 0, 1 JBOD)
Network
2x Broadcom (model redacted) PCIe 2x Gigabit LAN Connection
Audio
Realtek ALC885 HD Audio Codec 7.1 + 2 channel Multi-Streaming Output
FireWire
Texas Instruments TSB43AB22A PCI 2x IEEE-1394a (400 Mbit/s)

Today’s mystery motherboard has only a few more onboard features than a typical high-end product. Unlike Asus, though, the mystery brand’s designer doesn’t waste the Ultra ATA capability of a combination controller, instead choosing the tiny SATA-only JMicron JMB362 for its eSATA ports.

Rear panel ports include several classics plus eSATA. Two PS/2 ports support a keyboard and mouse, two digital audio outputs support optical and coaxial cables, and six analog audio jacks enable 7.1 audio out plus microphone and line input simultaneously. Six USB 2.0 and one IEEE-1394 FireWire port support modern peripherals, the eSATA ports support 3.0 gigabit transfers, and both network ports are tied to Gigabit Ethernet controllers.

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