Features:
AMD 790FX/SB750
4+1 phase VRM, dual lane design
Realtek ALC889A
2x Realtek RTL8111DL PCIe Gb LAN controller
2x JMicro JMB322 SATA II RAID 0, 1 port multiplier
Texas Instruments TSB43AB23 PCI Firewire controller
ITS IT8720F super I/O controller
ICS 9LPR5477CKL clock generator
passive cooling of chipsets/VRM
8Mb BIOS, version: F3L, F5C
Mainboard Revision: 1.00



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Slots:
2x PCIe 2.0 x16
3x PCIe x1
2x PCI

Memory:
4x Dual-Channel DDR3-slots for PC2-10667U memory up to 8GB

Storage:
6-Port SATA II featuring RAID 0, 1, 5, 0+1, JBOD
1-Port IDE
2x 2-Port SATA II RAID 0, 1, JBOD
1-Port Floppy

Backpanel ports:
1x PS/2 keyboard
1x PS/2 mouse
2x Gb LAN
8x USB 2.0
1x Firewire 400
1x Firewire mini 400
7.1 analog output
1x digital audio optical out
1x digital audio coaxial out



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Accessories:
2x SATA cable with clips
2x SATA cable with 90° connectors with clips
1x IDE cable
1x 2-port eSATA bracket
2x eSATA cable
2x HDD-power to SATA-power


BIOS features:
Bus Speeds: Auto, 200MHz to 500MHz in 1MHz increments
Memory Ratios: Auto, 4x, 5.33x, 6.67x, 8x
HT Link Speeds: Auto, x1 to x10 in x1 increments
Adjust PCIe Speed: 100MHz to 200MHz in 1MHz increments
DRAM command rate: Auto, 1T, 2T
DRAM timing control: Auto, manual
CPU Clock Multiplier: Auto, 4x to 32.5x in 0.5x increments
CPU NB Clock Multiplier: Auto, 4x to 10x in 1x increments
CPU Voltage: Auto, -0.600 to +0.600V in 0.025V increments
CPU VDD Voltage: not avaiable
CPU PLL Voltage:  various
CPU NB Voltage: Auto, 1.100V to 1.600V in 0.02V increments
CPU NB VID: Auto, -0.600V to +0.600V in 0.025V increments
DRAM Voltage: Auto, +0.050V to +0.750V in 0.05V increments
Northbridge Voltage: Auto, 1.10V to 1.60V in 0.05V increments
HT Link Voltage: Auto, +0.1V, +0.2V, +0.3V


Testbed:

Motherboard:
Gigabyte GA-790FXT-UD5P (provided by Gigabyte)
AMD 790GX/SB750
MSI 790FX-GD70 (provided by MSI)
AMD 790GX/SB750
AMD 790GX/SB750MSI DKA790GX (provided by MSI)
AMD 790GX/SB750
ECS Elitegroup A790GXM-AD3 (provided by Elitegroup)
AMD 790GX/SB750

CPU:
AMD Phenom II 720BE (provided by AMD)
AMD Phenom II 810 (provided by AMD)
AMD Phenom II 940BE (provided by AMD)
AMD Phenom II 955BE (provided by AMD)

CPU-Cooler:
Scythe Andy Kabuto (provided by Scythe-Europe)

Memory:
Kingston 3GB Kit (only 2 used) PC3-16000U KHX16000D3T1K3/3GX (provided by Kingston)
CL7-7-7-20 CR1T at 1.50V or mainboard default

Graphics Card:
MSI R4850-2D1G-OC (provided by MSI)

Power supply:
PC Power & Cooling Silencer 500W (provided by PC Power & Cooling)

Hard disk:
Western Digital WD4000KD (provided by Ditech)

Case fans:
SilenX iXtrema Pro 14dB(A) (provided by PC-Cooling.at)
Scythe DFS122512LS

Case:
Cooler Master Stacker 831 Lite (provided by Cooler Master)

OS:
Because we don't like broken operating systems such as Vista, all tests are performed with XP SP3. While 64-bit software is still not very common, we also stick with the 32-bit version.