Vega in 2018

One of the more disappointing elements to the roadmap announcements at AMD’s Tech Day was about graphics, and specifically Vega. To put it bluntly, there are no updates from AMD coming to the consumer desktop graphics market in 2018. With everything going on regarding the cycle of GPU architectures, and the insatiable demand for AMD graphics cards from cryptocurrency miners driving prices sky-high, the enthusiast and high-end gamers are getting the thin-end of the wedge.

Unfortunately, AMD is getting the blame for this, with many gamers blindly demanding ‘why not make more?’. In a recent earnings call, AMD CEO Lisa Su that they are making as many Vega graphics processors as possible, and also increasing their order with the fabs to produce more. Dr. Su put the problems with production squarely in the hands of the DRAM manufacturers, stating that memory supplies (GDDR5 and HBM2) are not sufficient to meet the high demand from everyone that needs them, which is also driving up cost. As a result, AMD isn’t blaming itself for the lack of GPUs being made available to consumers, but is saying that Samsung, Micron, and SK Hynix are not producing enough. AMD seem to be selling as many GPUs as they can make, which is good for their balance sheet at least.

So while there is nothing to look forward to on the desktop graphics side, AMD did mark on its roadmap two specific graphics products for 2018.

Vega Mobile, with HBM2

The graphics strategy in notebooks is bifurcated for AMD. On one side, their Mobile APU business takes care of the low-end of the market. The recent business relationship with Intel to sell graphics chips for Intel’s high-end mobile processors means AMD has a business on that side. The big hole in the middle is for notebook customers that want discrete graphics. After a couple of years of large Polaris based designs using GDDR, AMD is bringing Vega to this market.

As far as AMD were prepared to announce, a single Vega Mobile design is being prepared, which might be subject to binning based on compute units. The full amount of compute units in the chip has not been made publicly available, however it measures basically half of the full Vega 64 chip next to it. This would normally suggest a 32 CU chip, however there are a number of front-end elements required which have a fixed size – compared to the Intel 24 CU chip for the Intel with Radeon Graphics processor, this chip seems to be of similar size, if not bigger.

What we do know about the Vega Mobile processor is that it is paired with 4GB of HBM2, using an embedded interposer to give an overall z-height of 1.7mm. This is AMD’s second or third generation of interposer technology, and it has come a long way since Fiji: the interposer is tight along the dimensions of the GPU and HBM, but it is also embedded into the PCB. The embedding allows it to reduce the height, making it a better fit for ‘thin and light’ mobile platforms. The interesting correlation here is that at 1.7mm, it matches Intel’s EMIB implementation which is also 1.7mm. This caused two theories: either AMD is using EMIB (it isn’t), or it means that the perceived z-height benefit from using EMIB might not exist. The latter is true: AMD has unequivocally confirmed that it is using an interposer, and does not have access to Intel’s EMIB.

Ultimately AMD created more questions and answers with this announcement. Nothing was said regarding power, price, expected CPU/GPU combinations, or which notebook partners they have ready to use it. The only element to the discussion was that the chip will enable VR-capable notebooks, support HDMI 2.1 variable refresh rates, and will be coming in 2018. (Not to be all Maudlin, but watch out for the GPU manufacturer that puts three on a graphics card and sells it to miners.)

AMD Sampling 7nm Vega in Q4 2018

In previous roadmaps, AMD stated that it would be using a 14+/12nm process node for an update to its Vega design. At the Tech Day, that part of the roadmap no longer existed, and in its place was the announcement of a 7nm Vega graphics processor to be sampled at the end of the year.

This announcement came with a lot of questions, specifically whether 7nm would be ready for Q4 2018. AMD clarified its remarks by saying that this product will not be aimed at gamers, but will be a version of Vega specifically for machine learning, and they expect only to be sampling select customers with early silicon at the time.

This slide above lays most of it out: the design will be an optimized version of Vega, which means it might not look much like a Vega GPU as we know it. AMD is planning that this product is used both for training and inference, with a focus on new deep learning operations – specifically aimed at HPC clusters. AMD also cites a new high-speed IO in play, which might be a version of Infinity Fabric designed to compete with NVLink, as well as virtualization support.

With 7nm in its infancy, we highly expect it to be a small bit of silicon, something akin to the current Radeon Instinct MI8. By using small silicon in a high margin market, this will allow AMD to optimize the design plans for its other 7nm products. This is what Ryan called a ‘pipe-cleaner’ processor, and it makes sense for semiconductor fabs to focus on smaller processors to start with, as these will yield at higher rates.

With a planned sampling in Q4 2018, we might expect volume production to be nearer Q2 2019. This means that the next generation of consumer-focused graphics, perhaps using the newer Navi architecture, will be in the mid-2019 timeframe. According to AMD’s roadmaps, it is committed to demonstrating Vega on 7nm, Navi on 7nm, and a ‘next-gen’ design on 7+ before the end of 2020. Obviously there was no clarification on whether that final design is consumer or enterprise focused for 2020. In our recent interview with AMD’s CEO, when asked if the GPU market will at some point have to bifurcate between gaming focused and compute focused designs, Dr. Lisa Su stated that ‘it must be the case’.

Updates on AMD and RTG

At the time of the event, AMD was in technical limbo, with former Radeon Technology Group leader Raja Koduri leaving for Intel. Since the event (i.e. between the event and the time this is published), AMD has reimagined the role and hired two people to fill it: Mike Rayfield will head up the business side of RTG, while David Yang, who used to work for AMD on GPUs, is rehired to take control of the technology side of RTG.

You can read our analysis of these hirings here.

Zen+ Cores: 2nd Generation Ryzen, ThreadRipper, GlobalFoundries 12LP, and X470


View All Comments

  • gerz1219 - Thursday, February 1, 2018 - link

    Plenty of modern games play somewhat smoothly at 4K on a 1080 Ti, but could use a bump up in fps. Once you see 4k gaming, it's kind of hard to unsee, which is why I haven't bothered to buy a 1440p gaming panel to complement my professional panel. I'd gladly pay another $700 + the cost of a 4K Gsync/Freesync monitor next year to upgrade the 1080 Ti to something that can crush any game at 4K, but it doesn't look like that product will hit the market in 2019 because AMD is so far behind, and everyone's making tons of money selling GPUs for crypto. Reply
  • sld - Monday, January 8, 2018 - link

    Those who buy price gouging items walk into it willingly. Gsync vs Freesync, for example. Reply
  • Santoval - Monday, January 8, 2018 - link

    I hope you'll get better soon Ian. I don't think I would be able to type a single sentence if I were in your shoes, I have to admit am impressed by your resilience. Reply
  • sharath.naik - Tuesday, January 9, 2018 - link

    why no ryzen 7 8 core for mobile? Reply
  • msroadkill612 - Wednesday, January 10, 2018 - link

    At last, desk top apuS. Its very exciting.

    It bears noting, that liquid cooling is getting to be mainstream, and apuS DO allow both cpu & gpu to use a single cost effective cooler - ~$100usd.

    Desirable as gpu LC may be, it tends to be impossible/difficult on discrete gpuS physically. LC cooling the APU's gpu is very simple.

    The usual chip TDP constraints can be greatly loosened if LC is assumed (as in the ~300w LC vega).

    "The Ryzen 5 2400G will run at up to 3.9GHz with 4-cores/8-threads and 11 CUs, a 65W TDP, and a price of $169."

    Rumors of apuS w/ 28CUs dont seem fanciful, they seem conservative.

    My guess? is most moboS would handle a 180W module in their socket?

    An 8GB vega 56 is 210W TDP.


    Apr 14, 2017 - 1. TDP is not electrical watts (power draw), it's thermal watts. 2. Published processor TDPs are often rounded up to fit a desired specification. For example, AM4 motherboards are specd to run processors with 65W and 95W TDPs. It gives motherboard manufacturers and system builders a thermal framework"
  • dsplover - Wednesday, January 10, 2018 - link

    You will be feeling like crap a long time. Take it easy, you’ll only get worse. Thanks for the info on new desktop w/ GFX.
    Any info on that is appreciated.
    I just got over the flu, caught in Vegas. Lasted 5 weeks and I took the advice and got a flu shot in November. Big help....NOT
  • pfdman - Friday, January 12, 2018 - link

    "To accompany the HP Envy x360, the Lenovo Ideapad 720S, and the Acer Swift 3, Q1 will see the launch of a new HP (under embargo until later this week),"

    Now that the week is almost up, has anyone seen news as to what that new HP device is?
  • JoeDuarte - Saturday, January 20, 2018 - link

    Did AMD have a solution to the current impossibility of buying an AMD GPU? If we can't deal actually buy their GPUs, AMD might as well not exist, and in a very real sense they don't exist right now. Reply
  • 5080 - Sunday, January 21, 2018 - link

    Well, they do exist, but all are bought up by coin miners. Great for AMD, not so great for gamers and others that need a fast GPU. Reply
  • 5080 - Sunday, January 21, 2018 - link

    Hi Ian, are you still going to update this article with Lisa Su's interview and the rest of AMD's announcements? Reply

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