790i Ultra SLI Motherboards Compared

Software and Accessories

While we waited for a couple of competing brands to finish their 790i designs, the Asus marketing department ran out of review samples. Asus located a bare motherboard and a used retail box, but the package arrived missing a few small components, as well as the driver DVD. We downloaded the latest motherboard controlling applications from the Asus website.

AI Suite includes several utilities to control clock speed and voltage, as well as overclocking, underclocking or both, depending on the user’s choice.

The menus include AI Booster, CPU Level Up, and Asus Q-Fan. AI Booster provides manual frequency control, but uses automatic voltage control and gave us very little flexibility.

CPU Level Up is meant to adjust the CPU clock speed to that of a higher CPU model by increasing FSB clock, but since our E6850 is already the highest speed Conroe-core model, our only option was “Crazy”. The “Crazy” setting raised our VCore to 1.440 volts and the bus speed to FSB-1556, resulting in a 3.50 GHz final speed from our 3.00 GHz Core 2 Duo.

AI Gear includes mode settings of Auto, Turbo, High-Performance, Medium Power-Saving and Max Power-Saving. Turbo Mode increased our system to FSB-1400, while High-Performance Mode locked our system to stock CPU FSB speed. The Medium Power-Saving Mode dropped our system to FSB-1264, and Max Power-Saving Mode dropped it further to FSB-1200 while also decreasing the CPU multiplier to 6x. Auto Mode detects CPU load and adjusts between the highest and lowest speeds automatically.

EPU Monitor shows how much energy you are saving by enabling a power-saving mode, with a friendly animation to make you feel good about it.

The Asus PC-Pro II provides somewhat accurate information, with an alarm feature for any setting that falls outside a user-defined range.

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Documentation & SoftwareMotherboard Manual
Row 1 - Cell 0 Motherboard Driver DVD
Row 2 - Cell 0 Game: Company of Heroes, Opposing Fronts
Row 3 - Cell 0 Chipset Fan Instructions
Hardware1x SupremeFX II Audio Riser Card
Row 5 - Cell 0 1x Liquid Cooling Connector Kit
Row 6 - Cell 0 1x 3-Way SLI Bridge
Row 7 - Cell 0 1x 2-way SLI Bridge
Row 8 - Cell 0 2x Heatpipe Cooling Fan (Supplemental)
Row 9 - Cell 0 6x SATA Data Cable
Row 10 - Cell 0 1x Asus Q-Connector Kit
Row 11 - Cell 0 1x LCD POST Diagnostics Display
Row 12 - Cell 0 1x I/O Panel Shield
Row 13 - Cell 0 1x Floppy Cable
Row 14 - Cell 0 1x 80-conductor Ultra ATA cable
Row 15 - Cell 0 1x 4-pin to SATA power adapter (dual-device)
Row 16 - Cell 0 1x Port Breakout Plate (2x USB, 1x IEEE-1394)

Asus also includes an “LCD Poster” desk module, but it was one of the few things missing from our used accessory kit (we were successful at patching up the box however…using Photoshop). Also missing from this photo are the driver and game DVDs. Unique to the top products from Asus are the liquid cooling line adapter kit, and lighted port panel shield.

Thomas Soderstrom
Thomas Soderstrom is a Senior Staff Editor at Tom's Hardware US. He tests and reviews cases, cooling, memory and motherboards.
  • trainreks
    FINNALY !!!! A Review on the 790i
    Reply
  • doxicity
    Mystery Motherboard = GA-N780Ultra-DQ6?
    Reply
  • Crashman
    This was ALL OF THE AVAILABLE 790i Ultra SLI MOTHERBOARDS: Other graphics brands with NVIDIA reference boards INCLUDING EVGA are selling the same unit as XFX, even with the same BIOS (except for the boot logo). XFX was the only one who cared to send one.
    Reply
  • giovanni86
    Thats what i was going to say!!! Thank god. Well i guess i made the right choice. XFX 790i, exactly what i am going to buy in the coming month. Just need to save for it XD.
    Reply
  • jaragon13
    Who would pay four hundred dollars,when you can just buy a P45 for 100-150 dollars which has roughly the same real world experience as an X48 or 790I?
    Nah,I'd rather buy better and more reliable parts-such as power supply,processor,GRAPHICS CARD,and maybe go buy a rifle :P
    Reply
  • kitsilencer
    $400 for a motherboard? What the hell is wrong with the X48 Express that people would rather consider buying a 790i? And it can't be because of SLI. Makes more sense to buy the X48 and Crossfire.
    Reply
  • Crashman
    jaragon13Who would pay four hundred dollars,when you can just buy a P45 for 100-150 dollars which has roughly the same real world experience as an X48 or 790I?Nah,I'd rather buy better and more reliable parts-such as power supply,processor,GRAPHICS CARD,and maybe go buy a rifle
    If you want SLI you're going to need an SLI motherboard. The article specifically stated that the reference design motherboard was almost as good in many ways as the winning board, but far cheaper.

    The site only has two awards, one is for top value and the other is for "best of the best". It's hard to award a $350 motherboard for top value, but it's not so difficult awarding the "best of the best" even if the price is outrageous
    Reply
  • Crashman
    kitsilencer$400 for a motherboard? What the hell is wrong with the X48 Express that people would rather consider buying a 790i? And it can't be because of SLI. Makes more sense to buy the X48 and Crossfire.
    It does! Well, sorta. If you want the absolute fastest rig on the planet, you're going to need at least two, possibly three, GTX280's. But if you can wait a few days or maybe a couple weeks, you might be surprised at how well a Crossfire set of HD4870X2's can perform using an X48 motherboard.
    Reply
  • jaragon13
    My point is that,even though you could theoritically have 3/4 GPU's all at once,you won't get nearly as much performance as you'd want.A simple 750I or P45 chipset will do nearly the same job.
    Reply
  • zer00000
    It is a foxconn board i bet.I just read a review elsewhere with same stuff except it had an x48 chipset."All manner of goodies are bundled with the Black Ops: a 120MM fan, a plastic dry ice cooling pot for the Northbridge, and a Plexiglas "benching table" for open-air use."
    Reply