During Computex 2016, as part of their 10-Years of the Republic of Gamers’ celebrations and showcase, ASUS surprised me with a new take on the PC: the ROG Avalon. The Avalon is still a very extensive work in progress, however the fundamental concept is highly intriguing for anyone interested in PC design – using custom form factor parts and fitting them into a dedicated chassis but still opening up the options for users to customize their build. We were able to grab the hardware and Johnathan Chu, Product Manager for motherboards at ASUS, for a short time to record a video for a quick teardown and analysis.

Apologies for the audio, it was an impromptu recording with no equipment apart from a smartphone.

Project Avalon
Section taken from our Computex 2016 Coverage

When you’ve been reviewing and testing motherboards, as well as shouting at certain engineers for absolutely nonsense ideas (or really good ones), there is somewhat a monotony to it all. One generation there’s a new feature from one manufacturer, and the next generation we see it on mostly all the others. Some features are special and aren’t copied, but these require larger amounts of R&D and investment, then require the PR teams to communicate why the new feature is good or not.

One interesting conversation I had a couple of years ago was regarding the future of motherboard form factors. It was then as we see now: the full sized ATX, micro-ATX and mini-ITX systems accounted for 99%+ of desktop class PCs. Some large OEMs had their own designs on desktops, Zotac has a number of small mini-PCs for various markets, and servers do all sorts of standard and non-standard sizes, but for the consumer, it is essentially all about those three (and mini-STX is now moving in that space). So a couple of years ago, when the initial talk of Steam machines was coming to play, ASUS asked me what I thought about non-standard motherboard sizes in desktop sized systems.

It should be clear to most that the motherboard size issue is a chicken/egg situation. When Intel designs a CPU, there are certain limitations to where everything should go. Or no, I will correct that – there’s a budget limitation to where things can go. For example, memory is often to a certain side of the CPU because that provides the best quality signal for the onboard traces. Technically it can go on a different side (as it does on some designs), but that often requires more motherboard PCB layers to ensure the signal does not degrade or interfere with other signals, and in most cases there is a performance/latency penalty if you have to put it further away. But in order to stay buoyant, a motherboard manufacturer will stick to the appropriate design, because guess what – all the cases use the same standards too. The minute you produce a novel motherboard design, such as a different IO position or a new method for storage, none of the current cases on the market will work with it. So the case manufacturers can’t change because there are no products in a new design, the motherboard manufacturers can’t change because of the lack of cases but also the cost, and Intel keeps it consistent to keep everyone in the chain happy. Hello chicken, meet egg. Hello egg, meet chicken.

The only way to do a custom form factor is to build the system completely yourself, which is what Zotac does. Zotac plays mainly in the mini-PC market, and their owner Partner (‘Manufacturer of motherboards, AGP cards and other consumer electronics’ on their Google Search) has long fingers into manufacturing for other big name brands, so integrating the Zotac brand into new designs with custom chassis is easy enough. However ASUS wanted to go bigger and better, and that is how systems like the G20, a full desktop with a custom design, and the GR8, a book-sized Steam machine, came about. But it was clear, ASUS wanted more. Insert Project Avalon.

Project Avalon

Project Avalon is a custom, high-performance, gaming/VR PC design from ASUS. It is still very early in the design cycle, to the extent that this chassis currently weighs almost 40 lbs, but the concept is there. Inside is a custom designed motherboard that uses various internal connectors to implement various features. The design as it stands is built for Skylake plus a single GPU, and enough space to operate liquid cooling. The Perspex window on the top is so users can see into the design, flashing lights and all.

Astute readers will note that the PCB design looks rather odd – there isn’t a PCIe slot here, no power delivery, no rear IO, and what looks like the rear of a 24-pin power connector on the left-hand side. All we needed to do was take the motherboard out:

On the top we have a CPU socket, some memory slots, an M.2 slot, and what looks like a number of connectors for daughter boards. If we flip it over:

Click the image for the full resolution

Here we see more of what we know – power delivery chokes, a chipset, an 8-pin CPU power connector, a PCIe x16 connector and a 24-pin power connector. There are no SATA ports, and nothing on this system looks normal.

So, to explain: on the bottom near my finger is a custom connector, akin to a 4x PCIe connector, that breaks out into four SATA ports on a daughter board where are hot swappable on the chassis. The connector supplies both data and power. On the far right is a proprietary ASUS header for the rear IO.

At current, ASUS is not finalized on the pin layout and isn’t conforming to any particular standard, but this connector can send chipset PCIe lanes, digital video, and a few other things, over to a daughter board. This means one thing – adjustable rear IO panels!

I love this idea. Here are two examples of what ASUS suggests: the top one is a rear IO for workstation users, featuring dual Intel NIC and inside is a RAID capable M.2 slot running at PCIe 3.0 x4. The rear panel is a Home Theater focused design, using a single NIC and a USB 3.1 controller for 10 Gbps use. ASUS also had a VR edition with the specific ports required for the big VR headsets currently in the market. Because the custom connector carries enough PCIe, this opens it up to other custom designs, such as Thunderbolt, 10 Gbit Ethernet, different Ethernet/WiFi, additional storage, or anything that needs PCIe. Also, on the audio side, because this is a separate board, it could also influence audio capabilities and provide cleaner signals for audio processing. Adjustable rear IO is a topic only just being breached, with plenty of possibility.

Avalon's design is still very much fluid, with single GPU setups currently being supported:

In the video at the top of the page, we were able to get some hands-on time with Jonathan Chu, the product manager of Avalon, and do a quick teardown video after Computex had finished. Apologies for the audio, it was an impromptu recording with no extra equipment apart from a smartphone.

At this point the Avalon project is in an early design phase, so ASUS is looking for feedback with what they have so far. I don’t particularly mind if this ends up being an engineering concept design that never goes on sale (I’ve been pushing manufacturers to do more concept designs, similar to vehicle manufacturers at car shows), but the fact that ASUS are prepared to even attempt this is a good thing.


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  • Morawka - Friday, September 2, 2016 - link

    Why delay a new pc build on DOA components and wait weeks? just return it to the store for a replacement. Amazon will cross ship, and if you cause enough of a fuss, Newegg will too. As long as your within 30 days of purchase, you have way better options than fooling with a long drawn out RMA process.
  • bigboxes - Friday, September 2, 2016 - link

    This. Why wouldn't you return a defective product to the seller? It's what I do for a living. If I waited 2-3 weeks I'd be out of business.
  • Samus - Saturday, September 3, 2016 - link

    Id take what he says with a grain of salt. Joey is an incredibly opinionated person, and the general consensus is nobody here agrees with his opinions. In this particular case, his opinions are grossly outdated. Thousands of Amazon and newegg reviews, crossed with OEM wins and many personal experiences have proven Asus' professional monitors from the last few years are among the best available in the consumer market. The same goes for their motherboards, except dating back to the 80's. Asus is the largest consumer motherboard manufacturer in the world (Foxconn and Pegatron are technically larger because they have so many OEM contracts, but that doesn't mean Asus doesn't have any.) now don't get me wrong, that doesn't make them the best. In those terms, VW and Toyota would be the best cars in the world since they are the largest automakers. But VW and Toyota are without a doubt class leaders in the high end.

    My point is, if you buy some shitty $60 Asus board, don't compare it to a $130 Asus board. Compare it to a (potentially better) MSI, gigabyte or Foxconn board, where the competition weighs on Asus' desire to even bother competing due to saturating their lucrative high end.

    Asus has had more legendary boards, dating back to the 440BX days, than any other vendor I can think of. The P6T Workstation boards on the X58 chipset, for example, currently sell for what they cost 8 years ago...they have lost no net value.

    Beside Asus, the only other boards I use myself are Supermicro, and I've had a lot of issues with Supermicro. The difference is Supermicro is actually willing to make you a custom modified BIOS if necessary for your application (in my various cases usually to get PCI compatibility with specific RAID controllers, JBOD multiplexers, or network controllers) where as Asus (nor any other company I know of) will do that.

    However, it is incredibly rare one will ever have issues with a decent Asus board. Almost every entry-level builder guide for newbie PC builders recommends Asus motherboards, Samsung or Crucial SSD's, Intel CPU's, eVGA videocards, Corsair PSU's, gskill RAM and Coolermaster heat sinks because the combination is generally idiot proof.

    And at the high end, Asus is virtually the only vendor to offer OEM class options for workstations and servers, besides Supermicro.
  • Maleorderbride - Sunday, September 4, 2016 - link

    ASUS has been "looking" for a replacement for my half-functional X99-E WS motherboard for more than 6 weeks now. I could send mine in instead of doing an advanced RMA, but I can still do most things on that build. It is a high-end part. ASUS having no timely replacements is on them.

    I also submitted an e-RMA request for an old P9X79 LE, but it has yet to be approved 7 days later.

    Their RMA department is a joke. You have to call them on the phone (repeatedly) in order to get any results. They really do need to fix that.
  • Eidigean - Friday, September 2, 2016 - link

    Since ASUS is looking for feedback, IMHO this is not something I would buy.

    If the whole point is to keep one's CPU and Memory while upgrading the backplane or peripherals, or keep one's backplane and swap out the CPU and Memory, then components on a typical backplane (audio, usb, network, thunderbolt) could all be moved to PCIe add-on cards to allow mix and match. Half height, double width, short depth 1x and 4x slots would be great. 2x 10Gbe or TB3 might need an 8x slot. The only thing that needs to be on the backplane are the video ports coming off of the CPU's iGPU. Everything else is derived as PCIe from the CPU or chipset.

    Conversely, if the aesthetics of slots is strongly disliked, then develop a new standard. Divide the ATX backplane into several "cubes" with mezzanine connectors. Cubes can be mixed and matched, and sit flush on the motherboard. Cubes that need twice the bandwidth could be twice as wide and use 2 mezzanine connectors.

    It seems that the south bridge chip is becoming unnecessary. M.2 or U.2 drives, GPUs, Sound, Network, RAID, all can be done with straight PCIe lanes from the CPU.

    I wish motherboards did not include all of this built in functionality that I may never use. I always end up disabling some ASMedia add-on chip or SATA-Express that I wish I didn't pay for.
  • Valantar - Saturday, September 3, 2016 - link

    Part of the point here is that PCIe cards are very, very space inefficient due to the flexibility of the standard. TB3 requires a PCIe x4 link, but could fit on a PCB smaller than a credit card. Which means the rest of the space reserved for that PCIe slot in your case goes to waste. Of course, manufacturers could make combined 10GBE+TB3 cards, for example, but these would be limited to motherboards supporting lane splitting (which is about zero in the consumer space). This concept allows for compact yet full-featured systems with modularity impossible through ATX (interchangable I/O? Yes please! I don't need your bloody iGPU HDMI output, thank you.)

    Also, who says developing a new standard isn't a thought they're entertaining? This is clearly an alternative to ATX (and its siblings), with added modularity and flexibility. How does this really differ from your "cubes" concept?
  • Einy0 - Friday, September 2, 2016 - link

    This is a great concept but it will be a niche product unless some of this technology is made into an open standard.
  • Morawka - Friday, September 2, 2016 - link

    yeah asus, stop wasting your time on this. you'll never regain the R&D Spent on it. Its just to niche
  • Oxford Guy - Friday, September 2, 2016 - link

    Noise isolation is nice until you have a non-passive system that has fan noise to spoil the sound quality.
  • ClockHound - Friday, September 2, 2016 - link

    +1. That's what I thought at first too. Wish that was a good thing.

    Like the configurable rear i/o options. Everything else is not so much.

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