Board Features

Intel DX79SI
Size ATX
CPU Interface LGA2011
CPU Support Intel Second Generation Core i7 Sandy Bridge E
Chipset Intel X79
Base Clock Frequency 100.0 MHz
Core Voltage Default, 1.000 V to 1.920 V
CPU Clock Multiplier Auto, 5x to 65x
DRAM Voltage Auto, 1.20 V to 1.99 V
DRAM Command Rate Auto, 1T, 2T
Memory Slots Eight DDR3 DIMM slots supporting up to 64 GB
Up to Quad Channel
Support for DDR3, 1066-2400 MHz
Expansion Slots 2 x PCIe Gen 3 x16
1 x PCIe Gen 3 x8
2 x PCIe Gen 2 x1
1 x PCI
Onboard SATA/RAID 2 x SATA 6 Gbps, Support for RAID 0, 1, 5, 10
4 x SATA 3 Gbps, Support for RAID 0, 1, 5, 10
Onboard 4 x SATA 3 Gbps (PCH)
2 x SATA 3 Gbps (PCH)
4 x Fan Headers
1 x S/PDIF Out Header
1 x Front Panel Header
1 x Front Panel Audio Header
4 x USB 2.0 Headers
1 x USB 3.0 Header
1 x Remote Thermal Probe Header
1 x IEEE 1394a Header
Power / Reset / Clear CMOS Buttons + Debug LED
Board Status LEDs
Onboard LAN Dual Intel Gigabit 82579L + 82574L
Onboard Audio Realtek ALC892
Power Connectors 1 x 24-pin ATX connector
1 x 8-pin 12V connector
Fan Headers 1 x CPU Fan Header
2 x Chassis Headers 1 x Auxillary Header
IO Panel 6 x USB 2.0
2 x USB 3.0
1 x Back2Bios
2 x Intel Gigabit Ethernet
1 x Optical S/PDIF Out Connector
2 x FireWire / IEEE 1394a
Audio Jacks
BIOS Version 280 - 10/19/2011
Warranty Period 3 Years

Everyone who cares deeply about Ethernet options will be pleased to see dual Intel Gigabit NICs onboard; however there is nothing too much to shout about in general in terms of what is available here.  Perhaps an additional two USB 3.0 ports on the back panel, or more SATA ports by a controller would be a welcome addition to the consumer product.

In The Box

Unfortunately, there seems to be a large discrepancy in terms of what’s in the box compared to my media sample and what exactly Intel are going to ship with the DX79SI.  Personally, I have:

Intel ‘Skull’ themed mouse mat
Two slot length SLI connector
Long SLI connector
Thermal Probe

In terms of what should be included, according to the manuals:

Bluetooth/Wifi Module
Driver CD
User Manual

Despite all this, we see a distinct lack of SATA cables provided.  With a significant proportion of HDDs being sold as OEM, sans cables, it is a shock to see a product without cables being provided. 

Software

Again, for some reason due to this media sample, my range of installing drivers and software was limited to what I could download from the Intel pre-release website.  This required a manual installation of the chipset drivers, LAN drivers, USB 3.0 drivers, and so on.  While not exhaustive by any means, I hope the driver CD in the retail package has an ‘Install All’ option.

In terms of software, the only one currently available to me is the Intel Extreme Tuning Utility (XTU), which is essentially their overclocking software.  There are no fan controls for the OS, or ability to change the power modes here.  However, the XTU is a well designed piece of software with aesthetics to match.

The core piece of XTU is the manual tuning.  Almost all of the BIOS settings for the CPU are adjustable here in terms of sliders, with simple cancel buttons to return to default values.  Any changes you make here should turn up yellow, indicating a reboot is required to apply the changes (unless you select an option in the BIOS which allows you to change the CPU multiplier on the fly).

As mentioned previously, the lack of OS fan controls is one major aspect which lets this board down as an overall consumer product.  Hopefully this will change in future.

Intel DX79SI - BIOS and Overclocking Test Setup, Temperatures and Power Consumption
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  • Blaze-Senpai - Friday, November 18, 2011 - link

    I always thought Intel made their boards as a "reference" like Nvidia makes "Reference" cards; great if you want a basic but reliable board that doesn't have 9001 features you can mess with and set something on fire with at least.

    As for All Intel Branding... if only Intel made RAM...
  • Bristecom - Saturday, November 19, 2011 - link

    Wow, the price of motherboards has really gone up. My top of the line Intel mobo from 2004 (D875PBZ) and my brother's top of the line Intel mobo from 2008 (DX48BT2) were only about $150; now they're double!

    BTW, I'm kind of surprised you didn't mention the audio here. But I guess nobody cares about onboard audio anymore since they're all basically the same Realtek codec?

    Anyway, thanks for the review AnandTech, you always have the best reviews on the net!
  • Bristecom - Saturday, November 19, 2011 - link

    Guys, I just had a look at Intel's Product Brief on this motherboard here: http://www.intel.com/content/dam/doc/product-brief...

    It says UV Reactive SATA Cables ARE included! Also, strangely, it lists under "Hardware Management Features" that it has "Processor Fan Speed Control" and "System Chassis Fan Speed Control!" AND it lists PCI Express 3.0 for all three ports! So if these specs are indeed correct, this review needs to be updated. Perhaps the reviewer got a crappy pre-release model/prototype?
  • rallyhard - Saturday, November 19, 2011 - link

    Don't mean to be rude, but I expect a little more out of AT than:

    "However, to an enthusiast, it is strange to say that they sell well "
    "While ASUS, Gigabyte, MSI and the test have teams of designers for graphical interfaces"
    "I can much use for this in case errors arrive"
    "A lot of motherboard manufacturers in X79 should be placing the first and second PCIe slots at least an extra PCIe width apart"
    "There is a big gap in the I/O"

    ...and that was only on the first page.

    Are other commenters just holding their tongues to be nice, or...?
  • marraco - Sunday, November 20, 2011 - link

    -I love how small those chips are getting. Each year they appear more and more like if they were printed on the PCB.

    -They should put the first PCI slot nearest to the processor, because is the only one place which can be used to plug video cards without being blocked.
    That would need extra space on the case for the last video card, if it takes 2 slots, but most cases have that extra space, so I think that blocking a potential PCI slot is worse that blocking a potential third card.
    You do not want to put a triple video card system on a small case, because of airflow and cooling constrains. But if you spend all that money, is more probably that you also will invest on other cards, like decent sound.

    -As ever, Intel motherboards are crappy and expensive.
  • Questor - Sunday, November 20, 2011 - link

    While I agree, dual LAN without teaming seems a bit silly at this point in history and missing other bells and whistles (new BIOS type) at it's price point is a bit disappointing. However, unless I read this review cross-eyed (trust me, I have sleep problems, it's possible), this Intel board performs better than most of the 3rd party manufacturers who have much bigger groups working on developing their bread and butter products. Slot placement has seemingly always been a gripe by consumers from every board maker at various releases and certainly not an exclusive to an Intel board. I am not defending it, I am just saying, I have seen (maybe not here) board become recommended even though slot placement was a con many times.
    Maybe I am missing something here, but when a board is rock solid reliable, overclocks decently (if that is a feature a customer wants), and out-performs and/or is on par with 3rd party board performance at or near the same price point, isn't that a win?
    I have never owned an Intel board in my life. If I read around the 'Net and see similiar performance comparisons, this could be my first.
  • soltys - Monday, November 21, 2011 - link

    While I agree with some points, 2 things i'd like to point out:

    - looking at the /relatively/ slim and non-bloated software controls - they are already a reason for some award ('common sense' one perhaps ?). Relatively to the bloat other companies can stuff ... one often avoids using them because they are essentially a few checkboxs / sliders weighting heavy tens or hundreds (CCC, *cough*) megabytes; leaving aside well guessed reasons

    - subjectively, I've always considered a front panel with knobs as a proper method to control fans, not a software
  • ReySys - Tuesday, November 22, 2011 - link

    I always use this motherboards. In last times I was hoping to try a Asus. But Intel MB are very stable. The warranties are excellent. Fail is a rarity in this motherboards. I agree is rare to see a review. In the weekend, I see the 2 new enthusiast boards & I correct my decision to try Asus. What I like of this brand is they always are in emergent markets as Mexico. For so many years. You can try his technology. Asus in the other side only bring the cheap models. Maybe a disttributor in a rare ocasion brings a premium model. The price is high but is worth it. My desktops rigs endure almost 2 or 3 years with me. Then I resell the rig and my clients fight for it. They keep the anothar 2-3 years. The value of a self made desktop is very high. First his performance is better than any standard desktop, so you only need to change it when is leap forward in technology. The resell value is high too. In self-made you can always change a part to improve performance. This is the reason why I don´t like iMacs, so closed mind devices. I you feel the power, you are a hard to eclipse person. I always tell my boss that bringing my self-made equipment becasue his Enterprise Hp desktops are a shame. The idea is if you follow company guidelines you are going to be very behind of reality & speed. Have a nice week!
  • bellends - Saturday, January 4, 2014 - link

    This mobo DOES support teaming. WTF dude
  • Rodofhot - Tuesday, September 2, 2014 - link

    They prob dont even know what teaming is they are just repeating some early reviews they read.

    There r two kinds of people ones who like Intel everything and they seem to remember the pros of an intel board and thoes who want a cheap alternative to an intel mb and they seem to recall any cons of an intel board even though those cons may be a farse. I've read this mb doesn't support PCI 3.0 and also that it does support it in this articles' comments. Notice the guy who states PCI 3.0 is supported includes a link. Like me he must be the type who remembers the pros I guess as a fan of intel I must go uncover the truth. My guess is maybe a relase bios left ver 3.0 unsupported as with the teaming.

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