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) AnandTech

Review 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.