790i Ultra SLI Motherboards Compared

Onboard Devices

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NorthbridgeNvidia nForce 790i Ultra SLI SPP
SouthbridgeNvidia nForce 790i Ultra SLI MCP
Voltage RegulatorEight Phases (Digital)
BIOS(redacted) (06/16/2008)
333.3 MHz (FSB1333)333.3 MHz (+0.0%)
Clock GeneratorNvidia
Connectors and InterfacesRow 6 - Cell 1
Onboard3x PCIe x16 (Transfer Modes: 2x 2.0, 1x 1.0)
Row 8 - Cell 0 2x PCIe x1
Row 9 - Cell 0 2x PCI 2.2
Row 10 - Cell 0 2x USB 2.0 (2 ports per connector)
Row 11 - Cell 0 1x IEEE-1394 FireWire
Row 12 - Cell 0 1x Serial Port header
Row 13 - Cell 0 1x Floppy
Row 14 - Cell 0 1x Ultra ATA (2 drives)
Row 15 - Cell 0 6x Serial ATA 3.0Gb/s
Row 16 - Cell 0 1x Front Panel Audio
Row 17 - Cell 0 1x CD-Audio In
Row 18 - Cell 0 1x Fan 4 pins (CPU)
Row 19 - Cell 0 3x Fan 3 pins (Chassis/Power)
Row 20 - Cell 0 1x Internal Power Button
Row 21 - Cell 0 1x Internal Reset Button
Row 22 - Cell 0 1x Internal CLR_CMOS Button
IO panel2x PS2 (keyboard + mouse )
Row 24 - Cell 0 2x RJ-45 Network
Row 25 - Cell 0 6x USB 2.0
Row 26 - Cell 0 2x External SATA
Row 27 - Cell 0 1x IEEE-1394 FireWire
Mass Storage ControllersRow 28 - Cell 1
nForce 790i MCP6x SATA 3.0 Gb/s (RAID 0, 1, 0+1, 5, JBOD)
JMicron JMB362 PCIe2x External SATA 3.0 Gb/s (RAID 0, 1 JBOD)
NetworkRow 31 - Cell 1
2x Broadcom (model redacted) PCIe2x Gigabit LAN Connection
AudioRow 33 - Cell 1
Realtek ALC885 HD Audio Codec7.1 + 2 channel Multi-Streaming Output
FireWireRow 35 - Cell 1
Texas Instruments TSB43AB22A PCI2x 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.

Thomas Soderstrom is a Senior Staff Editor at Tom's Hardware US. He tests and reviews cases, cooling, memory and motherboards.