Sitting at the top of ASUS' consumer-focused motherboard line for X299 is the ASUS Prime X299-Deluxe. In the past, ASUS' 'Deluxe' line-up has attempted to emulate the status of the Mercedes S-Class but in motherboard form: showcasing new technology that may eventually filter down into where the bulk of the market sits over the next 3-5 years. The newest X299-Deluxe thus comes with a few of those technological features, such as WiGig and an informational OLED display, but also comes with onboard U.2 and a bundled Thunderbolt 3 add-in card. The Prime X299-Deluxe is the most expensive X299 motherboard we have tested to date.

ASUS Prime X299-Deluxe Overview

The ASUS Prime motherboard line started a couple generations back as a new way for ASUS to rebrand its mainstream consumer product line. The Prime X299-Deluxe we are looking at here happens to be the flagship in the 'consumer' X299 lineup, separate to the Republic of Gamers brand which focuses more on gaming functionality. The idea is that the non-gaming line has fewer of the gaming focused features, and might exhibit other appropriate features that a mainstream consumer is interested in. Along with the Deluxe, ASUS also offers a more cost-effective Prime X299-A, which trades off a few features in an effort to lower the price. The Deluxe however, aims to be at the top of this particular segment.

Buy ASUS Prime X299-Deluxe on Newegg

Overall, the default performance of the ASUS Prime X299-Deluxe was average to slightly above average in most of our testing. We kept acceleration options at default, such as multi-core enhancement (MCE), to get the out-of-the-box performance. ASUS has an interesting approach to MCE now, offering the option to enable it when turning on XMP. 

In our tests, the ASUS Prime X299-Deluxe boosted the CPU to 3.6 GHz through testing, with the results tied to how the board may ramp up and down the frequency in our testing environment at the time. For system tests, the POST times were on the same scale as other board tested, as well as load power. Power use on idle was notably higher than other systems for an unknown reason we were unable to determine, however DPC Latency was in the top half of all the X299 boards we have tested.

Our overclocking results hit 4.6 GHz with our new 7900X CPU, which is 100 MHz higher than the previous CPU but 100 MHz lower than the other board we tested on this CPU. As with other Skylake-X testing, CPU temperature issues are the common cause of our overclocking limit. 

The Prime X299-Deluxe, as a premium X299 motherboard, has a full consortium of storage options. Unlike most other X299 motherboards, it comes with a U.2 port for specialist NVMe drives. There is also seven SATA ports available on the board, with an eighth available through a combination SATA/PCIe M.2 port found under the heatsink. A second M.2 is a vertical M.2 slot on the right side of the board, which supports only PCIe devices, but also shares all of the bandwidth with the U.2 port meaning only one of the two can be used at the same time.

The Prime X299-Deluxe offers users up to 3-way SLI and Crossfire support, dual Intel network ports, 802.11ac as well as WiGig Wi-Fi, the ASUS tweaked Realtek ALC S1220A audio codec, a U.2 port, and the unique white shrouding and RGB implementation among other features. 

For connectivity the back panel has ASMedia controlled USB 3.1 Type-A and Type-C ports, as well as chipset controlled USB 3.0 and USB 2.0 ports. Also on the back is a BIOS Flashback button, the audio stack, and the 802.11ac+802.11ad antenna mount points. 

The ASUS Prime X299-Deluxe is currently priced at $475 at Amazon. This price point puts the board at the high-end of the spectrum competing with boards like the GIGABYTE X299 Designare EX at $450 or the MSI X299 XPower Gaming AC at $440

ASUS X299 Strategy

ASUS has at least eight X299 boards to choose from, with different segmentation. The Halo product line is the Republic of Gamers boards, aimed at enthusiasts, overclockers and gamers: the ASUS ROG Rampage VI Extreme sits at the top, with the ROG Rampage VI Apex as the lower cost 'Rampage' option, followed by the ROG Strix X299-XE Gaming and Strix X299-E Gaming. 

ASUS' X299 Motherboard Lineup (12/26)
Amazon Newegg
ROG Rampage VI Extreme   $650 $650
Prime X299-Deluxe   $475 $480
ROG Rampage VI Apex   $437 $430
ROG Strix X299-XE Gaming LINK $370 $370
TUF X299 Mark 1 LINK $340 $330
ROG Strix X299-E Gaming   $320 $320
Prime X299-A   $277 $296
TUF X299 Mark 2   $260 $260

The Prime segment consists of two boards, with the Prime X299-A being more entry and the Prime X299-Deluxe fitting a high-end solution. The TUF lineup also consists of two boards, the TUF X299 Mark 2, and TUF X299 Mark 1.

Information on Intel's X299 and our other Reviews

With Intel's release of the Basin Falls platform, encompassing the new X299 chipset and LGA2066 socket, a new generation of CPUs called Skylake-X and Kaby Lake-X were also released. The Skylake-X CPUs range from the 7800X, a hex-core part, all the way up to an 18-core 7980XE multitasking behemoth. Between the bookend CPUs are five others increasing in core count, as in the table below. The latter HCC models are set to be launched over 2H of 2017.

Skylake-X Processors
  7800X 7820X 7900X   7920X 7940X 7960X 7980XE
Silicon LCC   HCC
Cores / Threads 6/12 8/16 10/20   12/24 14/28 16/32 18/36
Base Clock / GHz 3.5 3.6 3.3   2.9 3.1 2.8 2.6
Turbo Clock / GHz 4.0 4.3 4.3   4.3 4.3 4.3 4.2
Turbo Max Clock N/A 4.5 4.5   4.4 4.4 4.4 4.4
L3 1.375 MB/core   1.375 MB/core
PCIe Lanes 28 44   44
Memory Channels 4   4
Memory Freq DDR4 2400 2666   2666
TDP 140W   140W 165W
Price $389 $599 $999   $1199 $1399 $1699 $1999

Board partners have launched dozens of motherboards on this platform already, several of which we will have an opportunity to look over in the coming weeks and months. 

Other AnandTech Reviews for Intel’s Basin Falls CPUs and X299

Prices checked Feb 16th

To read specifically about the X299 chip/platform and the specifications therein, our deep dive into what it is can be found at this link.

X299 Motherboard Review Notice

If you’ve been following the minutiae of the saga of X299 motherboards, you might have heard some issues regarding power delivery, overclocking, and the ability to cool these processors down given the power consumption. In a nutshell, it comes down to this:

  • Skylake-X consumes a lot of power at peak (150W+),
  • The thermal interface inside the CPU doesn’t do much requiring a powerful CPU cooler,
  • Some motherboard vendors apply Multi-Core Turbo which raises the power consumption and voltage, exacerbating the issue
  • The VRMs have to deal with more power, and due to losses, raise in temperature
  • Some motherboards do not have sufficient VRM cooling without an active cooler
  • This causes the CPU to declock or hit thermal power states as to not degrade components
  • This causes a performance drop, and overclocked systems are affected even more than usual

There has been some excellent work done by Igor Wallossek over at Tom’s Hardware, with thermal probes, thermal cameras, and performance analysis. The bottom line is that motherboard vendors need to be careful when it comes to default settings (if MCT is enabled by default) and provide sufficient VRM cooling in all scenarios – either larger and heavier heatsinks or moving back to active cooling. 

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  • PeachNCream - Friday, February 16, 2018 - link

    I think it's pretty safe to say that motherboards are too expensive and the things offered in exchange for the price like a tiny status screen and RGB LED strips on heatsinks don't really justify the cost.
  • Destoya - Friday, February 16, 2018 - link

    The HEDT platform motherboards have always suffered from being overpriced, but I do agree that the feature creep is not keeping up with the MSRP increases. Just a generation ago the X99 Deluxe had a MSRP of $400 with the X99-A at $275, both usually selling for around $20-30 less than that even close to release time. The addition of thunderbolt, U.2, and USB 3.1 on this board are notable but not really worth $100+, especially considering other features such as the overall number of Sata/USB ports has actually decreased over the past 3.5 years.
  • Maleorderbride - Saturday, February 17, 2018 - link

    I generally agree (as an owner of an X99 Deluxe II), but at least one can sell all of the doodads, bells, and whistles on eBay leaving you with just a solid board.

    Selling the TB3 card and a bunch of completely unnecessary cables left me with ~$90. Not ideal, but clearly someone wants a "CPU Installer Tool" and the rest of the crap.
  • Araemo - Tuesday, February 20, 2018 - link

    Do those add-ins even work?

    I bought the ThunerboltEX3 for a board it didn't come bundled with (but listed compatibility with it as a selling point), and it took me a few hours of trying different bios settings and driver version combinations to get it to even install properly within Windows, and still came up against a wall where it broke hibernate and hybrid sleep support in Windows.

    For something I bought as a 'future proofing' add-on to my build, I was very unhappy with it, and after trying to correct it with ASUS support for over a month, I gave up and returned it to Amazon while I still could.
  • CheapSushi - Friday, February 16, 2018 - link

    The PCBs are better in general with higher quality VRMs, MOSFETs, SMDs, Caps, etc. I see zero issue to complain about this when there's so many other options already. Don't buy it if you don't want it. Were you even in the market for the highest end enthusiast boards? Probably not anyway.
  • sonicmerlin - Saturday, February 17, 2018 - link

    Wow it has WiGig. What would that even be used for? Can you test the performance?
  • 3DoubleD - Saturday, February 17, 2018 - link

    I found it strange that it was in the title, but they hardly mentioned it in the review.
  • 69369369 - Sunday, February 18, 2018 - link

    Streaming 4K porn.
  • pyrrh0 - Thursday, February 22, 2018 - link

    WiGig (802.11ad) wireless access points already exist in the consumer space; Netgear's Nighthawk X10 is one. Dell and other PC manufacturers have wireless docks using the same technology. Multi-Gbps actual throughput, but limited to about 30 ft line-of-sight.
  • notR1CH - Monday, February 19, 2018 - link

    I really wish 10 GbE would become more standard on high end boards.

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